Bristly Foxtail (Setaria verticillata)

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Sunlight Full sun to partial shade; tolerates low-nutrient, compacted soils

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Watering Drought-tolerant; water only during extended dry spells to maintain foliage vigor

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Temperature Thrives in warm temperate to tropical climates; tolerates light frost when established

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Leaf: Linear, flat blades 10–30 cm long with rough, serrated margins
Flower: Dense, whorled spikelets with stiff, bristly bracts forming foxtail-like inflorescences
Stem: Slender, erect or slightly arching, smooth to sparsely hairy

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Watering

Water occasionally during prolonged dry periods to prevent wilting

Fertilization

Optional diluted compost tea application once monthly. No regular fertilization required for established plants

Composted eggshell powder：Sprinkle a thin layer around base of plants in early spring; avoid direct contact with foliage to prevent burning

Pruning

Trim back dead foliage to ground level in late winter to promote new spring growth
Remove mature seed heads before dispersal to limit self-seeding in managed gardens
Thin overcrowded clumps in early spring to improve airflow and reduce disease risk

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no adverse effects from ingestion or contact

Humans: No documented toxicity to humans; seeds are occasionally used as a minor grain source

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Culture: N/A

Usage: Ornamental textural grass; sometimes classified as an agricultural weed in crop fields