Also known as Black Bristlegrass
Large Seed Setaria (Setaria nigrirostris) is a vigorous annual grass known for its dense seed heads, often considered a weed but sometimes used for forage.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
100% intensity
Prefers full sun for optimal growth and flowering; tolerates partial shade.
Moderate
50% intensity
Allow soil to dry slightly between waterings; reduce in winter.
Loam, Sand, Clay, Acidic, Neutral, Alkaline
50% intensity
Average to Warm
50% intensity
Prefers average room temperatures; avoid prolonged exposure to extreme cold.
Moderate
50% intensity
Feed with balanced liquid fertilizer during growing season, every 4-6 weeks.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water Setaria nigrirostris moderately during the growing season, allowing the soil to dry slightly between waterings.
Reduce watering in autumn and winter to prevent waterlogging and root rot, as the plant enters a less active phase. Ensure good drainage to avoid soggy conditions.
Pruning of Setaria nigrirostris is generally minimal. Remove any dead or yellowing foliage as needed to maintain a tidy appearance.
If the plant becomes leggy or overgrown, it can be cut back hard in early spring to encourage new, denser growth from the base.
Setaria nigrirostris is easily propagated by seed. Sow seeds in spring under cover or directly into the ground after the last frost.
It can also be propagated by division of established clumps in spring, separating the root ball into smaller sections for replanting.
Repot Setaria nigrirostris every 2-3 years, or when the plant becomes root-bound. Spring is the ideal time for repotting.
Use a well-draining potting mix and a pot that is only slightly larger than the current one to avoid over-potting, which can lead to excess moisture retention.
Identify plants like this with ePlant AI
Snap a photo to get care tips and match similar species on the go.
Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Large Seed Setaria (Setaria nigrirostris)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Poaceae |
| Genus | Setaria |
| Species | Setaria nigrirostris |
Similar in genus Setaria
Answers based on plant encyclopedia data
