By selecting the toughest prairie plants to match these demanding growing conditions. That's exactly what we've done in our Septic Prairie Mix for Sand and Gravel Backfill. Studies have shown that the roots of prairie plants do not clog septic system pipes. In fact, these plants are recommended for planting over mounds and drainfields. Nutrients in the wastewater are taken up by the plants, instead of entering the groundwater. Now that's ecological landscaping! Not recommended for septic systems that have received topsoil over the sand and gravel backfill. Use our Short Prairie for Medium Soils Mix for sites with topsoil.
People often wonder if they can plant a prairie over their septic system or mound system. The answer is yes! Although woody plants such as trees and shrubs can clog drainpipes, herbaceous flowers and grasses have not been shown to pose a problem. In fact, the University of Minnesota recommends planting prairies over septic systems. For more information, click on the link below for detailed information on planting a native prairie on your septic system.
Link to University of Minnesota Septic Tank Study
Contains at least 15 wildflowers & 2 or more grasses.
Wildflowers:
Butterflyweed / Sky Blue Aster / Smooth Aster / Frost Aster / White Aster / Canada Milk Vetch / Lanceleaf Coreopsis / Purple Prairie Clover / Pale Purple Coneflower / Showy Sunflower / Downy Sunflower / Rough Blazingstar / Lupine / Dotted Mint / Beardtongue / Black Eyed Susan / Wild Petunia / Stiff Goldenrod / Showy Goldenrod / Ohio Spiderwort / Hoary Vervain
Grasses:
Sideoats Grama / Little Bluestem / Prairie Dropseed
Prairie Nursery's seed mixes are sold on a Pure Live Seed (PLS) basis. One PLS pound of seed is defined as the actual weight of seed required to equal one pound of 100% pure, germinable seed. We guarantee that you will receive high quality, viable seed every time you order from Prairie Nursery. Not all companies sell their seed on a PLS basis. Compare and choose PLS seed from Prairie Nursery!
