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IL DOT Class 4B (Wetland Grass & Sedge Mix)

IL DOT Class 4B (Wetland Grass & Sedge Mix)

Build the specified wetland grass-and-sedge component with IL DOT Class 4B. Match the recipe to the wetland planting areas and requirements identified in the project plan.

Listed ingredients include Blue Joint Grass, Tussock Sedge and Prairie Cord Grass. Confirm the specification edition, seeding rate and seed-quality basis.

Follow the project’s seedbed preparation, sowing and early-care requirements. Assess establishment against project criteria, and obtain approval before substitutions or later species additions.

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Regular price $ 2,990.00
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Enter your planting area and the specified seeding rate for this mix.

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.

Weight Conversions lbs. to oz.

0.01 pounds = 0.16 ounces

  • 0.1 pounds = 1.6 ounces
  • 0.25 pounds  = 4 ounces
  • 0.5 pounds = 8 ounces
  • 0.75 pounds = 12 ounces
  • 1.00 pounds = 16 ounces

IL DOT Class 4B (Wetland Grass & Sedge Mix) is a seed-mixture option for projects specifying this class. Match the recipe, application rate and seed-quality requirements to the applicable project documents.

Listed mix recipe

Listed rate: 56 lb/acre. Estimated seed density: 824.5 seeds/ft².

Common name Scientific name Listed % Est. seeds/ft² Rate (lb/acre) Basis
Cover Crop
Annual Rye Lolium italicum 44.64% 137.7 25.00 Bulk lb
Oats Avena sativa 44.64% 11.0 25.00 Bulk lb
Grasses, Sedges & Rushes
Blue Joint Grass Calamagrostis canadensis 1.29% 74.0 0.72 PLS lb
Lake Sedge Carex lacustris 0.64% 1.5 0.36 PLS lb
Fox Sedge Carex stipata 0.64% 4.5 0.36 PLS lb
Tussock Sedge Carex stricta 0.64% 7.0 0.36 PLS lb
Brown Fox Sedge Carex vulpinoidea 0.64% 13.2 0.36 PLS lb
Spike Rush Eleocharis acicularis 0.32% 4.6 0.18 PLS lb
Blunt Spike Rush Eleocharis obtusa 0.32% 3.3 0.18 PLS lb
Fowl Manna Grass Glyceria striata 1.50% 49.4 0.84 PLS lb
Common Rush Juncus effusus 0.64% 132.2 0.36 PLS lb
Path Rush Juncus tenuis 0.64% 132.2 0.36 PLS lb
Torrey's Rush Juncus torreyi 0.64% 211.6 0.36 PLS lb
Rice Cut Grass Leersia oryzoides 1.07% 7.5 0.60 PLS lb
Hardstem Bulrush Scirpus acutus 0.32% 1.3 0.18 PLS lb
Green Bulrush Scirpus atrovirens 0.32% 30.4 0.18 PLS lb
River Bulrush Scirpus fluviatilis 0.32% 0.3 0.18 PLS lb
Softstem Bulrush Scirpus validus 0.32% 2.0 0.18 PLS lb
Prairie Cord Grass Spartina pectinata 0.43% 0.6 0.24 PLS lb

Rates retain the stated bulk or Pure Live Seed (PLS) basis for each ingredient. If both appear, the total is not an all-PLS or all-bulk rate. Seed counts are catalog estimates; rounded rows may not sum exactly to the displayed total.

The class name and a catalog recipe do not by themselves certify project acceptance. Confirm the specification edition and any approved changes before ordering.

Ordering details

Listed options: 1 Acre; 1/2 Acre.

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.

Make your restoration budget go further

Approved Stewardship Circle participants receive 25% off retail native plants and seed. Conservation professionals, volunteers, and members or supporters of qualifying conservation organizations can apply. There is no program membership fee.

Your involvement with a land trust or conservation organization may qualify you. Check eligibility and submit proof with your application. Approval is required; organization membership does not automatically activate the discount.

Apply for the Stewardship Circle

Seed 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

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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.

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