Signal Grass

Brachiaria decumbens, Poaceae

Zones

9–12

Layer

Ground Cover

Lifespan

Perennial

Growth

Fast

Guild Roles

Ground CoverMulch Maker

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Moderate (established)High (seedling)

Soil pH

4.5 – 7.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

One-leaved VetchVicia articulata

Nitrogen Fixation

Shrubby StyloStylosanthes scabra

Nitrogen Fixation

White HoarypeaTephrosia candida

Nitrogen FixationBeneficial Insect Habitat

Cyprus VetchLathyrus ochrus

Nitrogen FixationPhysical Support

Brazilian Joint VetchAeschynomene brasiliana

Nitrogen FixationPollinator Sharing

Rough JointvetchAeschynomene rudis

Nitrogen FixationBeneficial Insect Habitat

Roundleaf CassiaChamaecrista rotundifolia

Nitrogen FixationBeneficial Insect Habitat

ChaksuCassia absus

Nitrogen FixationPest Deterrent

Antagonistic Plants

Bladder CloverTrifolium spumosum

Aggressive grass competes intensely with clovers and releases growth inhibitors

Spreading CloverTrifolium diffusum

Dense grass growth suppresses clover through root competition and shading

Sky LupineLupinus nanus

Signal grass aggressive growth pattern and allelopathic effects inhibit lupine development

Uses

Functions

Erosion ControlSoil StabilizationBiomass ProductionWeed Suppression

Common Questions

What zones does Signal Grass grow in?

Signal Grass grows in USDA hardiness zones 9 through 12.

What are good companion plants for Signal Grass?

Good companions for Signal Grass include One-leaved Vetch, Shrubby Stylo, White Hoarypea, Cyprus Vetch, Brazilian Joint Vetch.

Design guilds with Signal Grass and see companion relationships visually.

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