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  Author: KESSLER
PubID: ANR-0623
Title: WILDFLOWERS IN ALABAMA LANDSCAPES Pages: 12     Balance: 0
Status: OUT OF STOCK
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ANR-623 WILDFLOWERS IN ALABAMA LANDSCAPES

ANR-623, Revised Nov 2001. Raymond Kessler, Jr., Extension Horticulturist, Associate Professor, and Bethany Carden, Undergraduate Assistant, both in Horticulture at Auburn University. Originally prepared by Bridget K. Behe, former Extension Horticulturist, and Lillis V. Purvis, former Graduate Assistant.


Wildflowers in Alabama Landscapes
Alabamians are increasingly aware of the natural beauty afforded their state through its rich abundance of wildflowers. Some native Alabama wildflowers are easily grown, and many require less water and soil preparation than traditional landscape plants. Alabama has many different climates and geological characteristics where different groups of wildflowers are found. Current environmental concerns emphasize colorful wildflowers that can be incorporated into different landscapes.

Wildflowers are very enjoyable plants, but their use in residential and commercial landscapes is often overlooked. Native plants not only protect and maintain the native environment, but also add beauty and diversity to the landscape. Many wildflowers are easily grown and reward the gardener with many seasons of beauty as perennials or by readily reseeding themselves with little or no assistance. With prudent care, native plants can be preserved in their native habitats or established in the urban landscapes.

Conservation of native wildflower species is necessary to maintain the plants themselves and the biological diversity of animals and insects associated with them. The Alabama Natural Heritage Program is a branch of The Nature Conservancy of Alabama and is responsible for identifying elements of biodiversity to be protected. The Endangered Species Act of 1973 defines an endangered species as one that is "in danger of extinction throughout all or a significant portion of its range" and a threatened species as one "likely to become endangered within the foreseeable future." Plants that are on the federal list are not to be removed from federal lands or any other lands, unless they are in danger of being destroyed due to construction. Table 1 lists endangered and threatened plants in Alabama that are on the federal list.

Table 1. Endangered and Threatened Plants of Alabama

Listing Scientific Name Common Name
T Amphianthus pusillus Pool Sprite
T Apios priceana Price's Potato Bean
T Asplenium scolopendrium American Hart's-tongue Fern
E Clematis moorfieldii Morefield's Leatherflower
E Clematis socialis Alabama Leatherflower
E Dalea foliosa Leafy Prairie Clover
T Helianthus eggertii Eggert's Sunflower
T Lesquerella lyrata Lyrate Bladder-pod
E Lindera melissaefolia Pondberry
T Marshallia mohrii Mohr's Barbara's bottoms
E Ptilimnium nodosum Harperella
T Sagittaria secundifolia Kral's Water-plantain
E Sarracenia oreophila Green Pitcher Plant
E Sarracenia rubra var. alabamensis Alabama Canebrake Pitcher Plant
E Schwalbea americana American Chaffseed
E Spigelia gentianoides Pinkroot Gentian
T Thelypteris pilosa var. alabamensis Alabama Streak-sorus Fern
E Trillium reliquum Relict Trillium
E Xyris tennesseensis Tennessee Yellow-eyed Grass
Key: Listing
E = Endangered: Danger of extinction in all or part of its range
T = Threatened: Likely to become endangered in foreseeable future in all or part of its range

When purchasing wildflower plants, special consideration should be given to how nurseries obtain their products for sale. Ask if plants have been nursery propagated. Do not purchase plants or seeds collected from the wild; this is not good conservation practice. Besides complying with the Endangered Species Act, avoiding the possible incorporation of ild-collected plants in the landscape will preserve natural populations and help ensure the success of plants after transplanting. Wildflowers dug from the wild rarely thrive when transplanted to the home garden and often die from transplant shock because they lack strong root systems. Nursery-propagated and -grown plants have stronger, more compact root systems that will establish reliably in the landscape. Seed collected from the wild also may include undesirable weed and grass seeds.

Previously, wildflowers were defined simply as plants that are not normally cultivated. However, that definition no longer applies, because the demand for wildflowers is being met by producers of wildflower seeds and plants. Today, wildflower species are being further defined:

  • Native species--plants that occur naturally  in a particular area without the intervention of human beings
  • Indigenous species--plants that prosper in a distinct region or particular environmental habitat
  • Naturalized species--plants that were first introduced by human beings and have now become established over time throughout an area
  • Escaped varieties--plants originally introduced from other parts of the world, adapted to a particular region, and are now found in uncultivated portions of the region

Because many wildflowers are commercially produced as seeds or plants, they can offer a low-maintenance, cost-efficient landscaping alternative while preserving the local environment. Wildflowers are easy to use in the landscape when care is taken to select species whose natural environment closely matches the landscape environment where they will be planted or when the natural growing conditions are duplicated as closely as possible. For example, a wildflower that grows naturally on a slope under the canopy of trees will probably perform poorly in direct sunlight or in an area with inadequate soil drainage. Following are uses for wildflowers:

  • A backyard wilderness can preserve the best local wildflowers and encourage wildlife to visit the garden.
  • A border of wildflowers near a vegetable garden will attract pollinators like honeybees, butterflies, and hummingbirds.
  • A patio area of an apartment can be an interesting conversation piece by planting colorful and unusual specimens in clay pots and wooden barrels.
  • A cut flower garden can be enhanced with native perennials and reseeding annuals, because they are prolific bloomers with few disease and pest problems.
  • A flowering border can be enlivened with the addition of striking wildflower perennials.
  • A commercial landscape can show that a business cares about conservation by using those wildflowers that are drought tolerant and relatively maintenance free.
  • A roadside near a country home can be made more welcoming with the addition of easily maintained wildflowers.


Getting Started

Plant Selection

Many wildflower species are annuals, but others have longer life cycles including biennials and perennials. Annuals are plants that complete their entire life cycle (seed to flower to seed) within a single growing season. All roots, stems, and leaves of annuals die each year. Biennials require 2 years to complete their life cycles. Vegetative growth occurs the first year, and flowering, seed production, and plant death occur the second year. Perennials persist for many growing seasons, and while the leaves and stems of the plant may die each winter, the plant regrows the following spring from persistent roots or stems. There are some perennials (for instance, tickseed or oxeye daisy) that keep their leaves year-round (evergreen) and create attractive borders and ground covers. Some perennials require 2 to 3 years to grow into large flowering plants from seed. Therefore, include annuals and biennials to ensure a colorful display of flowers. Annuals, biennials, and perennials are found in all settings: meadow, alpine, aquatic, bog, and timber stands. Many wildflowers are extremely sensitive to areas other than their native locale and may not attain satisfactory growth if those conditions are not met in the landscape. Wildflowers that have symbiotic relationships with fungi or bacteria in their native soil must have some native soil to grow successfully in the landscape. Environmental factors such as climate, temperature, rainfall, altitude, exposure to sun or shade, soil type, and soil pH must be considered when attempting to add native plants to the landscape.

Wildflower Sources

The least expensive way to obtain native plant material is to purchase seeds that can be sown into flats or pots or directly into properly prepared seedbeds outdoors. The National Wildflower Research Center recommends purchasing seed mixes containing a high percentage of wildflower species indigenous to the specific area to be planted. Usually, these mixes are blended and labeled for specific U.S. regions (Northeast, Southeast, etc.). Ask your wildflower seed supplier for a seed mix specifically for your area.

Seed dormancy and sowing time are key factors in successful germination of wildflower seed. Seed of many native plants have mechanical or chemical barriers that prevent seed from germinating under conditions normally favorable to germination, called dormancy. Seed dormancy can be overcome by sowing the seed outdoors in the cool, moist months of fall and exposing the seed to winter conditions. Dormancy is satisfied during the winter, and the seeds germinate in the spring. Seed of other wildflower species normally germinate in the fall, allowing the seedlings time in the winter to develop a strong root system for spring growth. Keep in mind that wildflower seeds require consistent soil moisture to germinate; therefore keep the soil evenly moist until seedlings are well established.

Young plants (transplants) may also be purchased at relatively low cost; this is the best method for wildflower species that are difficult to germinate from seed. Larger plants, including woody trees and shrubs, are sometimes available as container-grown, balled-and-burlapped, or bare-root plant material. Not all species are available as large plants, but those that are will generally establish faster in the landscape. Perennial wildflowers can be purchased as bare-root crowns or in containers from nurseries, garden centers, or mail-order companies. Spring is usually the best time to transplant container-grown plants into the landscape. Bare-root trees, shrubs, and perennials should be planted from early to late winter when the plants are dormant.

Wildflowers that are perennials benefit from regular maintenance. Those that grow as clumps benefit from dividing every 3 to 5 years. To divide a plant, carefully dig the plant and break the clump apart by pulling or cutting it into small sections. Each section can then be replanted separately. Be sure that each section to be replanted has healthy roots and buds. The best time to divide perennial wildflowers is in the late fall after shoots have been killed by frost or in the spring as new growth begins. Some perennial wildflowers also benefit from midseason pruning by producing a second flush of flowers. Species such as yarrow, milkweed, and coneflowers will bloom a second time a month or two after their normal blooming time if faded flowers are promptly removed.

Seeds or plants that are obtained and grown close to the landscape location will be better adapted to the area. Choose nurseries that are located nearest the landscape or ones that produce seed from cultivated plants grown locally. Table 2 lists commercial and retail sources of wildflower seeds and plants.

Table 2. Sources for Wildflower Seeds and Plants

Company Name and Mailing Address Type of Business Plants Available W. Seeds Available
Applewood Seed Company
5380 Vivian St., Arvada, CO 80002
M, W   A, B, P, C
Beersheba Wildflower Gardens
Stone Door Road, Beersheba Springs, TN 37305
M, R, W V, H, B  
Ben Pace Nursery
Route 1, Box 925, Pine Mountain, GA 31822
M, R H, S, T  
Brookside Wildflowers
Rt. 3, Box 740, Boone, NC 28607
R C, H  
Dabney Herbs
P. O. Box 22061, Louisville, KY 40222
R H, V  
Eco-Gardens
P. O. Box 1227, Decatur, GA 30031
M, R, W H, V  
Flowerplace Plant Farm
P. O. Box 4865, Meridian, MS 39304
M, W H  
Gardens of the Blue Ridge
P. O. Box 10, Pineola, NC 28662
M, R, W H, T, S, V  
Harris Moran Seed Company
3670 Buffalo Road, Rochester, NY 14624
M, R, W   A, B, P
Homochito Outdoors
P. O. Box 630, Meadville, MS 39653
M, R, W A A, B, P, C, PM
H. G. Hastings Co.
P. O. Box 4274, Atlanta, GA 30302
M H, B M, PM, C
Hastings Nature & Garden Center
P. O. Box 4274, Atlanta, GA 30302
R C M, PM, C
Lamtree Farm
Rt. 1, Box 162, Warrensville, NC 28693
M, R, W T, S  
Magnolia Nursery & Display Garden
12615 Roberts Road, Chunchula, AL 36521
M, R, W H, T, S, C, B  
Native Nurseries
1661 Centerville Road, Tallahassee, FL 32308
R H, S, T PM
Park Seeds
Highway 254 North, Greenwood, SC 29647
M, R, W   A, B, P, M, PM
Pennington Seeds
P. O. Box 240, Madison, GA 30650
M, R   M, PM
Perry's Water Gardens
191 Leatherman Gap Road, Franklin, NC 28734
M, R, W A, B, C  
Salter Tree Farm
Route 2, Box 1332, Madison, FL 32340
M, R, W H, T, S, V  
Wildflower Nursery
1680 Highway 25-70, Marshall, NC 28753
M, R, W H, T, S, V  
Wildseed, Inc.
P. O. Box 308, Eagle Lake, TX 77434
M, R, W A, B, P, C, PM

Key:

BUSINESS PLANTS WILDFLOWER SEEDS
M= Mailorder A = Aquatic A = Annual
R = Retail B = Bare root B = Biennial
W = Wholesale C = Container C = Custom Blends
  H = Herbaceous M = Mixes
  T= Trees PM = No grass seeds in mixes
  S = Shrubs  
  V = Vines  

Site Selection

Just as any landscape for cultivated annuals, perennials, and shrubs is planned, so should the wildflower garden be planned. It can be a meadow, woodland, bog, or any other natural setting. The characteristics of the site will determine the wildflower selections. Generally, most wildflowers prefer a well-drained soil and a sunny location in the landscape. However, there are shade- and water-loving wildflowers to choose from.

Four to 6 weeks before planting, have the soil analyzed for pH level and fertility. Your county Extension office can assist with this if you have any questions. The pH scale (from 0 to 14) is a measure of relative acidity or alkalinity. Neutral soil has a pH of 7. Values lower than 7 are acidic and those higher than 7 are alkaline. While many plants grow well within a range of 6 to 7, many wildflowers require a specific pH outside this range. Knowing the pH of the soil helps in selecting wildflower species. Wildflowers generally do not require highly fertile soils. Fertilization may stimulate undesirable weed growth or even inhibit growth of some wildflower species.

The proposed site should be examined to determine predominant soil type, drainage, amount of daily sunlight or shade, and natural moisture of the site. Drainage can be checked by using a soil probe or by simply digging a 1-cubic-foot hole and filling it with water. When the water has drained, refill the hole, noting how long it takes the water to drain. A well-drained site will usually drain in less than an hour. A poorly drained site may take longer than 6 hours to drain. Slopes should also be checked for drainage. To avoid problems later, always check site drainage on each soil type found on the proposed planting site. The type of drainage found will indicate the type of wildflower garden that is most suitable for the particular site.

Many Alabamians have heavy, water-holding clay soil. The best way to improve clay soils so that wildflowers will thrive is to lighten the soil by adding amendments. Begin by breaking up the soil with a tiller or a spading fork. Then cover the area with about 2 inches of coarse sand and, using a spade or shovel, dig it into the top 8 inches. Next, spread about 4 inches of organic matter (peat, composted manure, or compost) over the area and dig this amendment into the soil. This should yield about 12 inches of good quality garden soil in which your wildflowers can thrive.

After deciding on a location, begin to plan the design you want for your landscape. Most wildflower gardeners want a "natural look." Because there are few straight lines or formal beds in nature, and plants rarely grow at regular intervals, obtaining a "natural" feel in a wildflower garden requires a different approach from modern landscaping methods. Some points to keep in mind include the following:

  • Group plants according to their moisture and light requirements.
  • Position groups of plants near boulders, trees, stumps, at bends in a path, or at the corner of an entrance.
  • Vary plant sizes (low and medium height plants are usually planted in groups of 3 or 5, whereas, taller and coarser plants are planted individually).

To create beds for wildflowers, you should follow certain basic landscape methods. Annual and perennial wildflower borders can be any shape to suit the setting and are often situated in front of a wall, fence, or evergreen hedge. Highlight the flower's blooms by placing them in front of a darker background.

Another type of bed is known as an island bed. Typically, island beds are loosely oval or informally shaped and work best set in an expanse of lawn or in an open area. These beds allow a view from all sides and from different angles. Wide borders and beds can accommodate bold grouping of many species. When selecting flowers to place in the beds, use native perennials that bloom over a long period and species that bloom in different seasons.


Wildflowers in the Garden

Meadow Garden

Meadow gardens can be dry, upland sites or wet, lowland environments. Based on studies at Auburn University and the University of Georgia, several annual and perennial wildflower species have been identified for use in Alabama. Those listed in Table 3 are particularly suited to roadsides, pastures, or meadows; these plants offer a wide range of flower color, growth habit, and leaf texture and color. Although natural meadows are predominantly grasses, meadow gardens are large, open areas where islands of wildflowers can be established in a sea of native grasses. Choosing plants that give a succession of blooming time will provide color from spring to fall.

Table 3. Wildflower Species Suitable for Meadow Gardens

Scientific Name Common Name Type Bloom Season Color
Achillea filipendulina Fernleaf Yarrow Perennial Summer Yellow
Achillea millefolium Common Yarrow Perennial Summer White/Red
Asclepias tuberosa Butterfly Weed Perennial Summer Orange
Cassia fasciculata Partridge Pea Perennial Fall Yellow
Centaurea cyanus Cornflower Annual Spring Blue
Chrysanthemum leucanthemum Oxeye Daisy Perennial Spring White
Coreopsis lanceolata Lance Coreopsis Perennial Summer Yellow
Coreopsis tinctoria Plains Coreopsis Annual Summer Yellow/Maroon
Daucus carota Queen Anne's Lace Biennial Spring-Fall White
Delphinium ajacis Rocket Larkspur Annual-    
Perennial(a) Spring-Summer Mixed
Echinacea purpurea Purple Cornflower Perennial Summer Purple
Eschscholzia californica California Poppy Annual Spring-Summer Yellow/Orange
Gaillardia aristata Perennial Gaillardia Perennial(b) Summer-Fall Yellow/Red
Gaillardia pulchella Annual Gaillardia Annual Summer-Fall Yellow/Red
Monarda citriodora Lemon Mint Perennial Summer Purple
Oenothera speciosa Buttercup Primrose Perennial Spring-Summer Mixed
Papaver rhoeas Corn Poppy Annual Late Spring Mixed
Phlox drummondii Annual Phlox Annual Spring-Summer Mixed
Ratibida columnaris Mexican Hat Perennial Summer Red/Yellow
Rudbeckia hirta Blackeyed Susan Perennial Summer-Fall Yellow
Salvia coccinea Scarlet Sage Perennial Summer Red
Salvia farinacea Blue Sage Perennial(b) Summer Blue
Solidago spp. Goldenrod Perennial(c) Fall Yellow
Trifolium incarnatum Crimson Clover Annual Spring Red
Verbena tenuisecta Moss Verbena Perennial Spring-Fall Pink
(a)Best results in central and south Alabama may be obtained by starting from seed in late summer.
(b)Plant may not persist as a perennial in central and south Alabama.
(c)Goldenrod does not cause hay fever; the culprit is ragweed, a less noticeable bloomer.

Wildflowers generally do not require a lot of soil preparation. Steps to be taken to ensure good results include removing weeds (either by hand or by an initial herbicide application), the addition of soil amendments, and an application of a postemergence grass control, if needed. If noxious weeds are present on the site, closely mow and carefully rake the area to be planted. An effective means of killing grass and weeds is by spraying the area to be planted with a broad-spectrum herbicide such as glyphosate (Roundup). Refer to the herbicide label for ornamental site preparation. Do not exceed the rate of 10.6 quarts of glyphosate (Roundup) per acre per year. You must read all chemical labels completely before using any pesticide or herbicide. A second herbicide application may be necessary prior to planting if there is weed regrowth. If a second herbicide application is applied, wait at least 2 weeks before direct sowing wildflower seeds or planting young plants.

If you object to the use of herbicides, try soil solarization. Soil solarization is a method of killing weeds in an area by heating the soil using sunlight. Cover the soil with black plastic during the hot summer months. High temperature under the plastic will germinate weed seeds and kill the seedlings.

If there is no weed regrowth after 2 weeks, lightly cultivate the soil surface to a depth of one-half to 2 inches. Deeper tilling brings viable weed seeds to the surface. Organic amendments (peat, composted manure, or compost) may be tilled into the native soil at that time to improve soil structure and increase water retention. If the site is on an erodible slope, a light application of a low nitrogen fertilizer (for example, 8-8-8) at the seedling stage will help establish wildflowers and native grasses. If the pH level is below 5, agricultural limestone should be applied to the site at the rate recommended by a soil analysis.

Control of weed grasses such as crabgrass or common Bermudagrass can be accomplished by using a selective postemergence herbicide. Contact the county Extension office for specific recommendations. Be sure to read all herbicide label directions prior to using them in any situation.

The recommended rates for wildflower seed application differ; therefore, it is best to follow the instructions provided by the seed supplier. Average rates for a mixed meadow of grasses and wildflowers are 10 to 15 pounds of native grass seed and 10 to 40 ounces of wildflower seed per acre. For a pure stand of wildflowers, sow 8 to 12 pounds per acre for most species.

If a small area is to be planted, mix the seeds with damp sand or similar filler and broadcast them by hand or with a cyclone seeder. The sand helps to evenly disperse the seed over a larger area. Generally, use nine parts sand to one part seed. Dry sand is used in drop or rotary spreaders. Regardless of the seeding method, lightly rake the area after spreading the seeds to bring them into good contact with the soil.

After seeding, apply a thin layer of mulch, preferably weed-free grain straw, pine needles, or composted pine-bark mulch, to conserve soil moisture and to protect seeds and young seedlings from bird damage. Avoid using hay mulches that are often infested with weed seeds.

Some seeds will germinate 10 to 20 days after planting, whereas other seeds will only germinate in early spring of the following year. Best germination will be obtained in planting locations with at least 6 hours of direct sunlight per day, little foot traffic, and frequent watering if rainfall is not plentiful.

While most wildflowers suitable for meadow gardens are drought tolerant, water is necessary for germination and proper seedling establishment. Areas planted in the spring must remain sufficiently moist for 4 to 6 weeks during seedling germination and establishment. If rainfall is more plentiful in the fall than in the spring, fall planting may reduce the need for supplemental watering. Some seed mixes include both annuals and perennials. Seed germination of both annuals and perennials is primarily influenced by water availability and soil temperature. Fall planting allows perennials to become established for early spring bloom. Also, by sowing seed in the fall when soil temperatures are below 60 degrees F, germination of the annuals in the mix will be delayed until the following spring when soil temperatures rise. Avoid planting wildflowers during the fall or winter in areas where cool-season grasses (for example, annual ryegrass or fescues) grow because these grasses will compete too aggressively with the wildflowers. In Alabama, fall planting is recommended from late October to mid-November and spring planting from mid- to late March.

During the first 2 years of establishment, good maintenance to control weed regrowth is critical to the establishment of a meadow garden that can later maintain itself without infrequent mowing. Wildflower sites must be managed to avoid reversion to natural vegetation.

Once the wildflowers establish, weed control methods are limited to mowing, hand pulling, and spot spraying with a herbicide. Grassy weeds such as crabgrass or common Bermudagrass can be sprayed with postemergence applications of selective grass-control materials. Contact your local Extension office for specific herbicide recommendations for your site and read the label before applying any herbicide. In small areas, handweeding may be the best way to remove noxious weeds. In larger areas, mowing before weed seeds mature is effective in controlling weeds. Mow a meadow garden in late summer when dominant summer-blooming species have begun to fade and before fall species start to bloom. Late summer mowing may stimulate some wildflower species into a second bloom cycle. An additional mowing in midwinter aids in wildflower seed dispersal and controls the invasion of woody species. For winter mowing, the mower blade should be set to a height of 4 to 6 inches.

Supplemental watering may also be required during the first 2 years until your wildflower garden is established. Even after wildflowers have become established, occasional watering during dry periods will ensure good flower color.

Regular fertilization is usually not needed for wildflower meadow gardens. Routine fertilization of wildflowers after plants establish can encourage unwanted weeds and produce plants with lush foliage and few flowers. Soil test results will indicate nutrient deficiencies before damage has occurred to plants. On sloping sites subject to erosion, a light application of a low nitrogen fertilizer (for example, 8-8-8) will help keep wildflowers in peak condition.

Experience indicates that meadow gardens change over time as first one and then another wildflower species dominates. This is normal and should be expected. However, reseeding annuals may need a little assistance each year by simply sowing the seed of those species you particularly enjoy.

Wild Bog Garden

Natural streams, a pond, or just a wet area in the landscape can be developed to provide special habitats for native stream, pool, and bog plants (Table 4). A bog contains a mixture of sand and acidic humus, has groundwater even with or slightly below the surface, and is characterized by isolated hummocks of moss on the surface. A carefully controlled source of water such as a stream or spring diverted to supply a bog is useful for large-scale bogs; however, bog gardens should not be established on a site where flooding occurs. Boardwalks placed throughout large bog gardens increase the viewing area and aid in maintenance.

Table 4. Wildflower Species Suitable for Bog Gardens

Scientific Name Common Name Type Conditions Feature
Asclepias incarnate Swamp Milkweed Perennial Moist soil Pink flowers
Asclepias lanceolata Milkweed Perennial Grow near water Red flowers
Betula nigra Swamp Birch Perennial Grow near water Peeling bark
Cephalanthus occidentalis Buttonbush Perennial Grow near water Shrub, 5'-10'
Chelone glabra Turtlehead Perennial Grow near water White flowers
Eupatorium maculatum Joe-Pye Weed Perennial Moist soil Purple flowers
Eupatorium purpureum Sweet Joe-Pye Weed Perennial Moist soil Vanilla fragrance of dried leaves and stems
Helenium autumnale Sneezeweed  Perennial  Moist soil  Yellow flowers
 Illicium floridanum  Anise Bush  Perennial  Moist soil  Evergreen shrub
 Iris versicolor  Wild Blue Flag  Perennial  Grow near water  Stems to 3'
 Lilium spp.  Lilies  Perennial  Moist soil  Many species
 Lobelia cardinalis  Cardinal Flower  Perennial  Moist-wet soil  Red flowers
 Lobelia siphilitica  Great Blue Lobelia  Perennial  Moist-wet soil  Stems, 2'-5'
 Nuphar luteum  Yellow Pond Lily  Perennial  Aquatic  Small yellow flowers, 1-1/2"
 Nymphaea odorata  Fragrant Water Lily  Perennial  Aquatic   White very fragrant flowers, 4"
 Monarda didyma  Scarlet Beebalm  Perennial  Moist soil  Showy flowers
 Orontium aquaticum  Golden Club  Perennial  Acid, moist bog  Difficult to grow
 Physostegia virginiana  False Dragonhead  Perennial  Moist-wet soil  Pink flower spikes
 Sagittaria falcata  Arrowhead  Perennial  Grow near water  White flowers
 Symplocarpus foetidus  Skunk Cabbage  Perennial  Moist soil  Purple/Green Foliage
 Typha latifolia  Common Cattail  Perennial  Grow near water  Brown flower heads
 Typha angustifolia  Common Cattail  Perennial  Grow near water  Narrow leaves
 Xyris baldwiniana  Yellow-Eyed Grass  Perennial  Grow near water  Yellow flowers

In a natural wet spot, excavate the wettest area by hand or by using a backhoe. This central basin will collect and hold water. Create habitats for wetland plants by piling excavated soil around the pool edges. Plant along the banks of naturally occurring streams to create a wetland garden area. If you do not have a stream on your site, try piping water to the garden to create a pool, a cascade, or other water feature. Cascading water can often mask undesirable noises that intrude into the landscape and invite birds and small animals into the garden.

If the site contains a pond, aquatic weeds such as reed canarygrass should be removed from the pond. Unicellular algae will foul pond water; an algicide will temporarily control the problem, but grasses and water lilies can be more effective. Once the pond water has cleared, add small fish to control mosquitoes.

If you do not have a wet area, a small bog may be constructed by lining a 12- to 18-inch deep by 3- to 6-foot wide depression with tar paper, finishing with two sheets of a heavy mill polyethylene. Place rocks as naturally as possible around the edges of the plastic. Next, fill the depression with a 1:2:3 (soil:sand:peat) mixture. Saturate the mix completely. Divert water or use drip irrigation to keep the area wet. Finally, plant the area with wildflower species native to bog habitats.

Wetland plants range from those species that grow submerged in water to those that grow in occasionally flooded, saturated soil to those species that grow in moist soil but do not tolerate flooding. Wetland soils are usually classified as peat (undecomposed organic material), muck (decomposed organic material), or mineral (mostly sand, silt, and clay). Arrange plants with similar cultural needs together.

Seeds may be broadcast on moist ground. The resulting plants may be transplanted into pockets of soil that have been enriched with organic amendments. Plants should only be set at the depth they were originally grown in the container or ground. After planting, place a 2- to 4-inch layer of mulch around the plants. Aquatic plants may be planted in shallow water by setting the plants in the bottom mud and then placing stones over the root ball to prevent the plant from floating. If an aquatic species is known to be invasive, it may be kept in bounds by placing it in a container. Good garden soil should be used (not soilless potting mix) because the weight will help hold the container in place. Place gravel on top of the soil to add additional weight and to prevent the soil from washing out of the container. Just like terrestrial plants, aquatic plants have planting depth requirements. When using aquatic plants in containers, the height of a container can be adjusted by placing the container on bricks or stones set into the pond bottom. But if the water depth fluctuates, adjust the height of the container so that the plant remains at the proper depth.

Maintenance of a bog garden includes hand pulling weeds, mulching, dividing some species that have grown too large for the area, and adding composted organic material to maintain the necessary soil fertility and pH. In bog gardens with only a moderate water supply, supplemental water may be necessary during periods of drought.


Natural Woodland Garden

Woodland landscapes are a great way to attract wildlife (including deer, insects, birds, and shy, ground- and tree-dwelling animals) to a property. To attract the largest number of wildlife species:

  • Choose appropriate trees and shrubs to provide nesting and shelter for nearby wildlife.
  • Choose a wide range of annual and perennial wildflowers for extended bloom time and nectar and seed production.
  • Avoid chemical pesticides that may damage insect populations.
  • Arrange trees and shrubs to lead shy wildlife close to the house or patio for viewing.
  • Supplement food plants and nesting areas with feeding stations and nest boxes.
  • Supplement water supply for wildlife during droughts.

In the woodland landscape, tree canopies don't quite touch, and there is room and light beneath the dominant trees for understory trees and shrubs and a ground cover of flowers, ferns, and mosses. Spring-flowering wildflowers are able to flower and form seed before the tree canopies develop and limit light. Weed species do not compete well here. In developing a woodland garden, you should allow each plant enough room to attain its mature size. Many wildflowers are suited to the woodland setting. Choose the basic overstory trees, understory trees, and shrubs first. Then fill in the details with native annual and perennial wildflowers (Table 5).

Table 5. Wildflowers Suitable for Woodland Gardens

Scientific Name Common Name Habit Size Light Soil Notes
Acer barbatum Florida Maple T 60' S M  Fall color
Acer rubrum Red Maple T 60'-90' S M Fall color
Acer leucoderme Chalk Maple T 30' S, SP M White bark
Adiantum pedatum Maidenhair Fern P 18" Sh M Alkaline soil
Amelanchier arborea Downy Serviceberry S, T 40' S, SP M Showy flowers
Anemonella thalictroides Rue Anemone HP 4"-6" Sh M, HF Delicate white flowers
Aquilegia canadensis Wild Columbine HP 1"-3" S, Sh M Calcareous soils
Aristolochia macrophylla Dutchman's-Pipe Vine V 15'-20' Sh M, HF Woody vine
Asarum canadense Wild Ginger HP 3"-5" Sh M Invasive
Asimina triloba Pawpaw S, T 30' S, P M Wildlife food
Asplenium platyneuron Ebony spleenwort P 12"-18" Sh M, N Evergreen
Athyrium Filix-femina Lady Fern P 18"-24" Sh M Neutral soil
Callicarpa americana American Beautyberry S S, PS M Rose berries
Calycanthus floridus Sweet Shrub S 5'-10' S, Sh M Fragrant flowers
Cercis canadensis Redbud T 25'-30' S, Sh M, HF Early bloom
Cocculus carolinus Carolina Moonseed V 15'-20' S, PS M Red fruit
Cornus florida Flowering Dogwood T 25'-40' S, PS M Flowers
Clematis virginiana Clematis V 15'-20' S, PS M White flowers
Cypripedium calceolus Yellow Lady's-Slipper HP 12"-18" Sh M, HF Native orchid
Cyrtomium falcatum Holly Fern P 1'-2' Sh M, N Evergreen
Dicentra Cucullaria Dutchman's Breeches HP 12"-18" Sh M, HF Delicate
Dryopteris marginalis Marginal-Shield Fern P 2' Sh M, A Evergreen
Fagus grandifolia American Beech T 60'-80' S M, HF Wildlife food
Fraxinus americana White Ash T 80' S M, HF Fall color
Galax aphylla Wandflower HP 10"-20" Sh M Rocky woodlands
Geranium maculatum Wild Geranium HP 1'-2' S, Sh M Rose flowers
Hamamelis virginiana Witch Hazel S, T 20'-30' PS M Fall color
Hexastylis arifolia Heartleaf Wild Ginger HP 3"-5" Sh M Groundcover
Hexastylis minor Wild Ginger HP 3"-5" Sh M, HF Groundcover
Ilex cassine Dahoon Holly S, T 30' S, PS M Evergreen
Ilex decidua Possumhaw S, T 20' S, PS M Wildlife food
Ilex vomitoria Yaupon S, T 20' S, PS M Evergreen
Iris verna Dwarf Iris HP 4"-5" S, PS M, A Fragrant
Juniperus virginiana Eastern Red Cedar T 40'-60' S LF Limestone soils
Kalmia latifolia Mountain Laurel S, T 10'-15' Sh M, A Pink flowers
Mitchella repens Partridge Berry P 2"-3" Sh M, HF Forms dense mat
Osmunda regalis Royal Fern HP 4' Sh M, A Background
Oxydendrum arboreum Sourwood T 50' S, Sh M Attractive
Pinus elliottii Slash Pine T 60'-100' S M Swamp to upland
Pinus taeda Loblolly Pine T 80'-100' S M Flood plains to upland
Pinus virginiana Virginia Pine T 30'-60' S LF Well-drained sites
Polystichum acrostichoides Christmas Fern P 18" Sh N Evergreen
Quercus alba White Oak T 80'-100' S M Slow growing
Quercus phellos Willow Oak T 50'-80' S M Shallow roots
Rhododendron alabamense Alabama Azalea S 5'-10' Sh M, HF White flowers
Rhododendron canescens Wild Honeysuckle S 5'-10' Sh M, HF Pink flowers
Thelypteris kunthii Southern Shield Fern HP 3'-5' Sh M Alkaline soil
Trillium spp. Trillium species HP 3"-10" Sh M Early blooms
Viola papilionacea Common Blue Violet HP 4"-6" Sh MF Blue flowers
Key: Habit
H = Herbaceous
T = Tree
S = Shrub
V = Vine
P = Perennial
Light
S = Full Sun
Sh = Full Shade
PS = Partial Sun
PSh = Partial Shade
Soil
M = Moist
LF = Low fertility
HF = High fertility
A = Acidic
N = Neutral

For the woodland garden, clay and sandy soil types should be amended with 6 to 12 inches of humus, compost, or peat moss that is incorporated to a depth of 12 to 18 inches. This will aid in developing a moist, well-drained soil. Usually, a slightly acidic soil is desired for most woodland gardens in Alabama. Drainage is important to many woodland wildflowers. On sites with marginal drainage, planting in berms (raised beds) constructed from native soil incorporated with organic amendment allows naturalized areas within the landscape.

Planting time for the woodland garden is from early to midspring or fall. If transplanting, move the plants when they are dormant or inactive. Late summer- and fall-blooming plants are best moved in early spring. When planting near trees, dig large holes and remove all tree roots from the holes so that the wildflowers can become established without competition for water and nutrients. Refill the holes with native soil that is amended with organic amendments in a mixture of two-thirds soil to one-third amendment. In heavy clay soils, score the sides of the hole so that the plant's roots will grow into the native soil. Mulch all new plantings with a generous 2- to 4-inch layer of leaf litter, pine needles, pine bark nuggets, composted pine bark mulch, or aged wood chips to protect them from extremes of heat, cold, and drought.

Removing weeds and adding mulch are two basic maintenance tasks in the woodland garden. Watering during periods of prolonged drought may be required, especially in the first several years after planting. Some forest perennials will require division every few years to continue to flourish; this should be done in the spring. An application of fertilizer (for example, 8-8-8 or 16-0-16) each spring will help establish the plants. Ferns, especially, require a very acid soil. The addition of an acidic organic material such as peat moss is beneficial to many fern species. Acid-loving plants should be fertilized with an acidic fertilizer.


Considerations for Commercial Uses

Installation, establishment, and maintenance of wildflower areas in residential and commercial landscapes are similar in most instances. However, for those performing installation and maintenance of landscapes containing native wildflowers, there are some special considerations. The needs of each individual client must be considered. Find out what the client expects from the landscape each season. Does the client expect a floral display focusing on color each season--pansies in winter and spring, marigolds and salvia in summer, and chrysanthemums in fall? Is a neat, manicured landscape with plants within set boundaries desired? If the answers are yes, then a mixed border incorporating wildflowers is probably not for your client. But, for those clients with a different perspective on flower and foliage color, texture, variety, and form, a landscape incorporating wildflowers in mixed borders and naturalized areas within a setting of native trees and shrubs may be more suitable.

A commonly installed landscape feature is an annual bed or border that is changed as seasons change. An alternative to this could be a mixed border of annuals and perennials that also contain native wildflowers. However, a mixed border that uses wildflowers has installation and maintenance requirements that are different from those of an annual bed or border.

Many perennials and biennials bloom only once during a period of 3 to 6 weeks; therefore, border plantings containing wildflowers may not always be at their peak. However, they will offer the client spectacular displays at 3- to 4-week intervals. The larger varieties of cultivated annuals (begonia, impatiens), chosen for color, habit of growth, and bloom period, blend well in the mixed border; their lush growth quickly fills the open space and can be effective when the less numerous perennials are not blooming. Some annual wildflowers are self-seeding and may only require an initial sowing to become established. For these types, seed heads must be allowed to dry for seed dispersal the following year. For those commercial and residential clients who do not like the seed heads, remove the seed heads, but add the cost of reseeding those annual wildflowers the following year.

Maintenance costs for sunny annual borders and mixed borders may be more expensive than for shady borders and annuals alone. Plan for replanting a percentage of the plants. Generally, a mixed border should contain approximately 55 to 65 percent annual filler flowers to 35 to 45 p