PatternBaseSmooth Cordgrass
Spartina alterniflora, Poaceae
Zones
3–10
Layer
Herbaceous
Lifespan
Perennial
Growth
Fast
Guild Roles
Mulch MakerBeneficial Insect HabitatGround Cover
Growing Conditions
Sun
Full Sun (preferred)
Water
High (established)High (seedling)
Soil pH
6.5 – 8.5
Tolerances
Drought
Frost
Heat
Pest Resistance
Disease Resist.
Companion Plants
Antagonistic Plants
Pendulous SedgeCarex pendula
Spartina alterniflora produces allelopathic compounds that inhibit other wetland plants and aggressively competes for root space in marshland environments
Needle SpikerushEleocharis acicularisSmooth cordgrass is known to outcompete native sedges and rushes through allelopathic suppression and aggressive root competition
California Giant BulrushScirpus californicusInvasive cordgrass competes aggressively with native bulrushes through root competition and allelopathic suppression
Uses
Functions
Salt Marsh StabilizationErosion ControlStorm ProtectionBiomass
Edible Parts
Seeds
Common Questions
What zones does Smooth Cordgrass grow in?
Smooth Cordgrass grows in USDA hardiness zones 3 through 10.
What are good companion plants for Smooth Cordgrass?
Good companions for Smooth Cordgrass include Saltmeadow Rush, American Dunegrass, Sea rush.
Design guilds with Smooth Cordgrass and see companion relationships visually.
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