MNL Septic Mound Mix

From: $55.00

Designed to provide stable, ground cover in poor quality septic mound soils 

Specially designed with great species for poor-soil septic mound and drainfield areas.  The University of Minnesota recommends native grasses and wildflowers for septic mounds to improve soil stability and providing a cover to limit frost depths. 

Seed mixes in our 500, 1,000, 5,000, and 1/4 acre package sizes come with native grasses, wildflowers, cover crop, and a filler (for easier spreading) all pre-mixed. Orders in 1/2 acre or 1 acre+ sizes come with grasses, wildflowers, and cover crop bagged separately for drill seeding or broadcast seeding.

Species of cover crop seed will depend on the time of year the product is ordered – if you order ahead and have a delayed planting time in mind, please indicate planting season (spring, summer, fall, or winter) in a note at check out.


Click here for tips on seeding your own project!


Septic Mound Mix

Common NameScientific NameType of PlantBloom Season
Side-oats GrammaBouteloua curtipendulaGrass
Prairie BromeBromus kalmiiGrass
Slender Wheat GrassElymus trachycaulusGrass
Little BluestemSchizachyrium scopariumGrass
Prairie DropseedSporobolus heterolepisGrass
Prairie OnionAllium stellatumForbSummer
Butterfly MilkweedAsclepias tuberosaForbSummer
ColumbineAquilegia canadensisForbSpring
Partridge PeaChamaecrista fasciculataForbFall
White Prairie CloverDalea candidaForbSummer
Purple Prairie CloverDalea purpureaForbSummer
Pale Purple ConeflowerEchinacea pallidaForbSummer
Common Ox-eye Heliopsis helianthoidesForbSummer
Round-headed BushcloverLespedeza capitataForbSummer
Rough Blazing StarLiatris asperaForbSummer
Wild BergamotMonarda fistulosaForbSummer
Spotted Bee BalmMonarda punctataForbSummer
Large-flowered PenstemonPenstemon grandiflorusForbSpring
Long-headed ConeflowerRatibida columniferaForbSummer
Black-eyed SusanRudbeckia hirtaForbSummer
Gray GoldenrodSolidago nemoralisForbFall
Stiff GoldenrodSolidago rigidaForbFall
Showy GoldenrodSolidago speciosaForbFall
Smooth Blue AsterSymphyotrichum laeveForbFall
Sky-blue AsterSymphyotrichum oolentangienseForbFall
Long-bracted SpiderwortTradescantia bracteataForbSpring
Hoary VervainVerbena strictaForbSummer

MNL Septic Mound Mix


Seed mix contents likely to vary slightly throughout the growing season. Actual seed mix composition will be listed on seed tag at time of delivery.

MNL produces premium, local origin native seed.  All of our native seed is tested for noxious weeds and certified to be of local origin.  It is also tested for germination and purity, allowing us to sell it as “Pure Live Seed” (PLS).  This assures you are only paying for viable seed.