Deerweed
Acmispon glaber
Care
full sun
very low
Medium; Tolerates a wide variety of soils.
2–3ft tall , 3–3ft wide
Jan-Dec
Deciduous
Friendly
Prized
Coastal scrub and chaparral from Santa Barbara County to San Diego County, below 3000 ft elevation in open slopes and ridges.
Care Guide
Planting
Plant deerweed in full sun in a spot with medium drainage - it tolerates a wide variety of soils, so don't overthink the soil prep. Space plants 2 to 3 feet apart to account for their mature height. Plant in fall or winter to let roots establish before the dry season, and avoid planting in areas that stay wet.
After Planting
Water weekly for the first summer to help establish roots, then cut back to once a month or less once established. Expect the plant to drop its small leaves during dormancy - this is normal deciduous behavior. Deerweed tolerates cold down to 15°F, so most Bay Area winters won't stress it. The biggest mistake is watering too much; this is a drought-adapted plant that will rot with excess moisture, especially in winter.
Endangered & Threatened Species Supported
Listed under California ESA; range has contracted significantly
Wildlife Supported
Birds
Critical spring staging resource during northbound migration (Feb-Apr); high-energy nectar source
Insects
Endangered species; year-round nectar resource critical for population support
Spring foraging resource for early season emergence
Extended bloom supports multiple brood cycles throughout year
Larval host plant; early season availability supports spring generation emergence
Consistent year-round bloom provides reliable nectar flow
Year-round nectar visitor; supports nesting season foraging
Larval host; supports multiple generations across growing season
Year-round bloomer provides extended nectar availability; critical early season resource Jan-Mar for colony establishment
+6 more species