Built for Water Flow Control and Long-Term Site Integrity
Replaces DOT 310 & 328
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33-261 |
Stormwater South & West |
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Common Name |
Scientific Name |
Rate (kg/ha) |
Rate (lb/ac) |
% of Mix (% by wt) |
Seeds/ sq ft |
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big bluestem |
Andropogon gerardii |
2.24 |
2.00 |
5.72% |
7.35 |
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fringed brome |
Bromus ciliatus |
2.24 |
2.00 |
5.73% |
8.10 |
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bluejoint |
Calamagrostis canadensis |
0.07 |
0.06 |
0.18% |
6.40 |
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slender wheatgrass |
Elymus trachycaulus |
1.12 |
1.00 |
2.85% |
2.53 |
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Virginia wild rye |
Elymus virginicus |
1.68 |
1.50 |
4.28% |
2.31 |
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switchgrass |
Panicum virgatum |
0.43 |
0.38 |
1.07% |
1.93 |
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fowl bluegrass |
Poa palustris |
1.19 |
1.06 |
3.03% |
50.70 |
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Indian grass |
Sorghastrum nutans |
0.13 |
0.12 |
0.36% |
0.55 |
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prairie cordgrass |
Spartina pectinata |
0.43 |
0.38 |
1.07% |
0.91 |
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Total Grasses |
9.53 |
8.50 |
24.29% |
80.78 |
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awl-fruited sedge |
Carex stipata |
0.28 |
0.25 |
0.71% |
3.10 |
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dark green bulrush |
Scirpus atrovirens |
0.21 |
0.19 |
0.54% |
31.70 |
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woolgrass |
Scirpus cyperinus |
0.07 |
0.06 |
0.18% |
39.00 |
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Total Sedges and Rushes |
0.56 |
0.50 |
1.43% |
73.80 |
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Canada anemone |
Anemone canadensis |
0.08 |
0.07 |
0.19% |
0.20 |
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marsh milkweed |
Asclepias incarnata |
0.12 |
0.11 |
0.32% |
0.20 |
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leafy beggarticks |
Bidens frondosa |
0.12 |
0.11 |
0.31% |
0.20 |
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flat-topped aster |
Doellingeria umbellata |
0.07 |
0.06 |
0.17% |
1.50 |
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spotted Joe pye weed |
Eutrochium maculatum |
0.07 |
0.06 |
0.18% |
2.19 |
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autumn sneezeweed |
Helenium autumnale |
0.15 |
0.13 |
0.36% |
5.97 |
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obedient plant |
Physostegia virginiana |
0.08 |
0.07 |
0.21% |
0.30 |
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tall coneflower |
Rudbeckia laciniata |
0.08 |
0.07 |
0.21% |
0.37 |
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New England aster |
Symphyotrichum novae-angliae |
0.08 |
0.07 |
0.19% |
1.56 |
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blue vervain |
Verbena hastata |
0.06 |
0.05 |
0.15% |
1.85 |
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golden alexanders |
Zizia aurea |
0.22 |
0.20 |
0.56% |
0.79 |
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Total Forbs |
1.12 |
1.00 |
2.85% |
15.13 |
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Oats |
Avena sativa |
28.02 |
25.00 |
71.43% |
11.14 |
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Total Cover Crop |
28.02 |
25.00 |
71.43% |
11.14 |
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Totals: |
39.23 |
35.00 |
100.00% |
180.85 |
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Purpose: |
Stormwater pond edges, temporarily flooded dry ponds, and temporarily flooded ditch bottoms. |
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Planting Area: |
Tallgrass Aspen Parklands, Prairie Parkland, and Eastern Broadleaf Forest Provinces. Mn/DOT Districts 2(west), 3B, 4, Metro, 6, 7 & 8. |
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33-261 
| MANUFACTURED BY: Ramy Turf
Engineered Seed That Strengthens Stormwater Management Systems
The 33-261 Stormwater South and West mix is designed for use where water must move predictably and soils need structural stability. Formulated for performance across stormwater channels, retention systems, and slope edges, this blend combines durable native and naturalized species that establish quickly, hold soil in place, and maintain vegetation through extended wet-dry cycles.
A unified system provides measurable stability where it counts most, functioning as a single, responsive surface rather than a collection of disconnected parts. Fast-establishing varieties close the soil quickly to safeguard exposed ground during the crucial early growth period, while deep-rooted perennials secure long-term integrity capable of enduring freeze-thaw cycles, sustained rainfall, and seasonal stress. Ramy Turf’s advanced formulation ensures dependable germination, uniform establishment, and lasting coverage that remains consistent as environmental variables shift throughout the year.
Confidence on-site starts with results that hold. When the stand takes root fast and stays stable, crews stay ahead of schedule. Engineers trust the slope to perform exactly as designed, and project managers close the book without last-minute fixes or callbacks.
Seeding Rate and Installation Guidance
Successful establishment starts with precise application. On firm soils, drill seeding delivers accurate depth and uniform coverage. In tighter or sloped areas, broadcast seeding achieves consistent results without disturbing the surface. Early irrigation locks in moisture, jump-starting root development and quick, dense canopy formation.
Performance Beyond Initial Establishment
Ramy Turf’s 33-261 Stormwater South and West outperforms conventional mixes with stronger soil retention, faster germination, and dependable cover that endures through weather extremes. The formulation responds to the site itself, managing water efficiently while reinforcing structure where control is critical. Long-term stability follows—clean, consistent performance that shows in every inspection and holds its form season after season.
