California-rape
Sinapis arvensis
Last reviewed: June 2026
Light
part shade
Water
medium
Size
12"–40" H × 6"–18" W
Bloom
Apr, May, Jun, Jul
Native to
NJ
Pollinators
bees, beetles, flies
Browse plants for this ecoregion
Sinapis arvensis is a European annual wildflower that produces bright yellow four-petaled flowers from spring through summer. This weedy species can self-seed aggressively and is considered invasive in many areas of North America.
In an HOA neighborhood
California-rape takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Non-native weedy appearance
- Can spread aggressively by seed
- May be considered invasive by some HOAs
Wildlife value
The yellow flowers attract bees, beetles, and flies during its long blooming period from April through July.
Common questions
- How much sun does California-rape need?
- California-rape grows best in part shade conditions.
- When does California-rape bloom?
- California-rape blooms in April, May, June, and July.
- Where is California-rape native?
- California-rape (Sinapis arvensis) is native to NJ, per the USDA PLANTS Database and regional native plant society lists.
- What pollinators does California-rape attract?
- California-rape draws bees, beetles, and flies.
- Is California-rape HOA-friendly?
- California-rape takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow California-rape? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz