Threeray Tarweed
Deinandra lobbii
Care
2–2ft tall
Friendly
Prized
Coastal hills and scrub from Monterey County to Santa Barbara County, below 2000 ft elevation
Care Guide
Planting
Plant threeray tarweed in fall or winter to establish roots before the growing season, as this is a California native annual. Since this species is found across diverse California regions from the Bay Area to the coast, it appears adaptable to local conditions, though specific soil and sun requirements aren't documented - start with a well-draining location and observe how your plant performs.
After Planting
Threeray tarweed is an annual, meaning it completes its entire life cycle in one year and will naturally die back after flowering and setting seed. Water during establishment and through the bloom period, but expect the plant to decline as temperatures warm in late spring or summer - this is normal behavior for an annual, not a sign of failure. Let spent plants dry out naturally rather than trying to extend their season artificially.
Endangered & Threatened Species Supported
California endemic kangaroo rat
California Species of Special Concern due to habitat loss and localized population declines
Wildlife Supported
Insects
primary summer foraging resource
late summer pollen source
summer-fall migration staging
peak pollen availability mid-summer
Birds
post-maturation seed consumption
Mammals
autumn seed harvest and caching
seasonal seed stores
Reptiles
refuge among basal vegetation