Colbaga
Brassica rapa
Last reviewed: June 2026
The USDA PLANTS Database (opens in new tab) does not flag Colbaga as toxic to livestock.
Light
full sun
Water
medium
Size
12"–36" H × 6"–18" W
Bloom
Apr, May, Jun
Native to
AR
Pollinators
bees, beetles
Browse plants for this ecoregion
Brassica rapa, commonly known as field mustard or turnip, is an annual herb that grows 1-3 feet tall with yellow four-petaled flowers from April through June. This fast-growing plant produces edible leaves and roots, though it can spread readily by seed if not managed.
In an HOA neighborhood
Colbaga takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Considered a weed by most HOAs
- Can self-seed aggressively
- Dies back completely as annual
Wildlife value
The bright yellow flowers attract bees and beneficial beetles during spring and early summer. Seeds may provide food for birds when allowed to mature.
Common questions
- How much sun does Colbaga need?
- Colbaga grows best in full sun conditions.
- When does Colbaga bloom?
- Colbaga blooms in April, May, and June.
- Where is Colbaga native?
- Colbaga (Brassica rapa) is native to AR, per the USDA PLANTS Database and regional native plant society lists.
- Is Colbaga toxic to livestock?
- The USDA PLANTS Database does not flag Colbaga as toxic to livestock.
- What pollinators does Colbaga attract?
- Colbaga draws bees and beetles.
- Is Colbaga HOA-friendly?
- Colbaga 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 Colbaga? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.