Detention Basin, Raingarden, and Bioswale Native Seed Mix
Detention Basin, Raingarden, and Bioswale Native Seed Mix
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Quick View - Seed Mix Specifications
Quick View - Seed Mix Specifications
Seeding Rate: 7.8 lb/acre (107 seeds/square foot)
| Common Name | Scientific Name | % of Mix | Seeds/ft2 | Total | |||||||||
|
Grasses Big Bluestem |
Andropogon gerardii | 9.62% | 2.8 | 0.750 PLS lb | |||||||||
| Bluejoint Grass | Calamagrostis canadensis | 0.20% | 1.6 | 0.016 PLS lb | |||||||||
| Canada Wild Rye | Elymus canadensis | 20.04% | 3.0 | 1.563 PLS lb | |||||||||
| Virginia Wild Rye | Elymus virginicus | 20.04% | 2.4 | 1.563 PLS lb | |||||||||
| Fowl Manna Grass | Glyceria striata | 0.80% | 3.7 | 0.063 PLS lb | |||||||||
| Rice Cut Grass | Leersia oryzoides | 0.80% | 0.8 | 0.063 PLS lb | |||||||||
| Switchgrass | Panicum virgatum | 3.21% | 1.3 | 0.250 PLS lb | |||||||||
| Indiangrass | Sorghastrum nutans | 9.49% | 3.3 | 0.740 PLS lb | |||||||||
| Prairie Cord Grass | Spartina pectinata | 0.80% | 0.2 | 0.063 PLS lb | |||||||||
|
Sedges & Rushes Bottlebrush Sedge |
Carex comosa | 2.05% | 1.8 | 0.160 PLS lb | |||||||||
| Fringed Sedge | Carex crinita | 1.60% | 1.1 | 0.125 PLS lb | |||||||||
| Porcupine Sedge | Carex hystericina | 2.05% | 1.8 | 0.160 PLS lb | |||||||||
| Pointed-broom Sedge | Carex scoparia | 1.54% | 3.7 | 0.120 PLS lb | |||||||||
| Common Fox Sedge | Carex stipata | 0.60% | 0.6 | 0.047 PLS lb | |||||||||
| Brown Fox Sedge | Carex vulpinoidea | 1.28% | 3.7 | 0.100 PLS lb | |||||||||
| Common Rush | Juncus effusus | 0.26% | 7.3 | 0.020 PLS lb | |||||||||
| Dark Green Bulrush | Scirpus atrovirens | 0.51% | 6.8 | 0.040 PLS lb | |||||||||
| Woolgrass | Scirpus cyperinus | 0.26% | 12.5 | 0.020 PLS lb | |||||||||
| Softstem Bulrush | Schoenoplectus tabernaemontani | 1.60% | 1.4 | 0.125 PLS lb | |||||||||
|
Forbs Sweet Flag |
Acorus americanus | 1.60% | 0.3 | 0.125 PLS lb | |||||||||
| Water Plantain | Alisma subcordatum | 0.77% | 1.3 | 0.060 PLS lb | |||||||||
| Canada Anemone | Anemone canadensis | 0.40% | 0.1 | 0.031 PLS lb | |||||||||
| Angelica | Angelica atropurpurea | 1.60% | 0.2 | 0.125 PLS lb | |||||||||
| Swamp Milkweed | Asclepias incarnata | 0.80% | 0.1 | 0.063 PLS lb | |||||||||
| New England Aster | Symphyotrichum novae-angliae | 0.40% | 0.8 | 0.031 PLS lb | |||||||||
| Joe Pye Weed | Eutrochium maculatum | 0.80% | 2.2 | 0.063 PLS lb | |||||||||
| Boneset | Eupatorium perfoliatum | 0.80% | 3.7 | 0.063 PLS lb | |||||||||
| Sneezeweed | Helenium autumnale | 1.20% | 4.5 | 0.094 PLS lb | |||||||||
| Ox-eye Sunflower | Heliopsis helianthoides | 2.57% | 0.5 | 0.200 PLS lb | |||||||||
| Great St. John's Wort | Hypericum ascyron | 1.60% | 8.7 | 0.125 PLS lb | |||||||||
| Great Blue Lobelia | Lobelia siphilitica | 0.32% | 4.6 | 0.025 PLS lb | |||||||||
| Virginia Mountain Mint | Pycnanthemum virginianum | 0.32% | 2.0 | 0.025 PLS lb | |||||||||
| Black-eyed Susan | Rudbeckia hirta | 3.21% | 8.4 | 0.250 PLS lb | |||||||||
| Sweet Black-eyed Susan | Rudbeckia subtomentosa | 1.20% | 1.5 | 0.094 PLS lb | |||||||||
| Prairie Dock | Silphium terebinthinaceum | 0.80% | 0.0 | 0.063 PLS lb | |||||||||
| Stiff Goldenrod | Solidago rigida | 1.60% | 1.9 | 0.125 PLS lb | |||||||||
| Purple Meadow Rue | Thalictrum dasycarpum | 0.80% | 0.3 | 0.063 PLS lb | |||||||||
| Blue Vervain | Verbena hastata | 2.41% | 6.4 | 0.188 PLS lb | |||||||||
Substitutions may be necessary based on availability at the time of order.
Pure Live Seed
Pure Live Seed
Seed is provided in Pure Live Seed (PLS) unless otherwise stated.
Pure Live Seed (PLS) expresses the viable seed content of a seed lot using its purity and germination or viability test results. It helps you compare seed lots and calculate how much bulk seed is needed to meet a specified PLS planting rate.
PLS weight and bag weight
PLS weight is not the same as the total weight of seed in a bag. For example, a lot with 80% purity and 75% viability contains 60% PLS: 80 × 75 ÷ 100 = 60. Supplying 10 lb PLS from that lot requires about 16.67 lb of bulk seed.
Use the current seed test and the stated basis of the mix specification. Germination calculations may include applicable hard or dormant seed. Seed-count estimates also require the number of seeds per pound; PLS alone does not provide a seed count.
What to check when buying a mix
Check whether each rate is stated in PLS pounds, bulk pounds, or a combination. A mix with both bases should not be described as having an all-PLS total.
PLS does not remove weed seeds or guarantee establishment. Review the seed label and analysis for weed content, and match site preparation, planting conditions and follow-up management to your project.
Sources: USDA NRCS, Understanding Pure Live Seed and The Importance of Seed Quality for Natural Resource Conservation.
Plant stormwater landscapes with a native mix intended for detention basins, rain gardens and bioswales. Its grasses, sedges, rushes and wildflowers span a range of moisture preferences to suit different positions within the planting.
Map how often each area floods and how quickly it drains. A mix that includes wet- and dry-mesic species does not mean every ingredient will establish across that entire range. Use the wetter components in the appropriate zones and plan establishment care around stormwater events.
Site conditions
Light: Full sun to part sun.
Soil moisture: Wet to dry-mesic positions within a stormwater planting.
Blend ingredients
The following ingredients are listed in the published mix specification. Confirm the current formulation before ordering. Listed proportions follow the source and are not a claim about percentage by seed count.
Planting and establishment
Prepare the site and manage existing weeds before seeding. Germination requirements vary among the ingredients. Some native species benefit from cold, moist conditions; follow the mix-specific sowing guidance rather than treating every ingredient the same. For background, read native seed stratification guidance.
Ordering details
Available sizes: 1/4 Acre; 1/2 Acre; 3/4 Acre; 1 Acre. Select your coverage size above.
Please specify any mixing instructions when ordering. Species and proportions may vary with availability; confirm the agreed recipe, quantity and seed-quality basis for your order.
All seed sales are final and can not be returned because they are custom mixed at the time of purchase.
Shipping & Care
Shipping & Care
Seed ships all year and typically ships within a week of an order being placed.
We have attempted to put together some basic information regarding native seed installation, establishment, and maintenance. We hope you find it helpful. If you need further assistance on native seed establishment, please schedule a free consolation call here.
Consultation Services
Ecosystem Restoration Considerations
Native Seed Establishment Best Management Practices
Native Seed Stratification Best Management Practices

Solving a Site Problem? Get Expert Advice + Get Store Credit
Whether you're fighting severe erosion, replacing invasive species, designing a pollinator haven, or seeding large acreage, choosing the wrong species wastes time and money. Talk 1-on-1 with a restoration ecologist to map out the exact species, plug counts, or seed mixes for your soil and goals. Book a consultation and get all or a portion credited directly back to your order.