PatternBaseSourgrass
Digitaria insularis, Poaceae
Zones
8–11
Layer
Herbaceous
Lifespan
Perennial
Growth
Fast
Guild Roles
Ground CoverMulch Maker
Growing Conditions
Sun
Full Sun (preferred)
Water
Low (established)Moderate (seedling)
Soil pH
5.5 – 8
Tolerances
Drought
Frost
Heat
Pest Resistance
Disease Resist.
Companion Plants
Antagonistic Plants
Thread RushJuncus filiformis
Sourgrass produces allelopathic compounds and competes aggressively with thread rush
Fall WitchgrassDigitaria cognataRelated Digitaria species compete for similar niches and may exhibit allelopathic interference
Lehmann's LovegrassEragrostis lehmannianaSourgrass and Lehmann's Lovegrass compete aggressively for resources in arid grasslands with potential allelopathic effects
Uses
Functions
Erosion ControlBiomass ProductionSoil RehabilitationPioneer Species
Common Questions
What zones does Sourgrass grow in?
Sourgrass grows in USDA hardiness zones 8 through 11.
What are good companion plants for Sourgrass?
Good companions for Sourgrass include Guinea Grass Trichoglume.
Design guilds with Sourgrass and see companion relationships visually.
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