Great Yellow Woodsorrel
Oxalis grandis
Last reviewed: July 2026
Great Yellow Woodsorrel is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-05-21). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435and your veterinarian's emergency line.
Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.
Light
part shade
Water
medium
Size
6"–12" H × 6"–12" W
Bloom
Apr, May, Jun, Jul
Native to
AL, GA, IN, KY and 8 more states
Pollinators
bees, beetles
Great yellow woodsorrel is a low-growing native perennial that forms neat clumps of three-leaflet foliage topped with bright yellow flowers from spring through summer. This compact groundcover reaches only 6-12 inches tall and maintains a tidy appearance in partial shade gardens.
In an HOA neighborhood
Great Yellow Woodsorrel is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, mid zone.
Wildlife value
The cheerful yellow blooms attract native bees and beetles during its long flowering season from April through July.
Common questions
- How much sun does Great Yellow Woodsorrel need?
- Great Yellow Woodsorrel grows best in part shade conditions.
- When does Great Yellow Woodsorrel bloom?
- Great Yellow Woodsorrel blooms in April, May, June, and July.
- Where is Great Yellow Woodsorrel native?
- Great Yellow Woodsorrel (Oxalis grandis) is native to AL, GA, IN, KY and 8 more states, per the USDA PLANTS Database and regional native plant society lists.
- Is Great Yellow Woodsorrel toxic to dogs?
- Yes. Great Yellow Woodsorrel is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- Is Great Yellow Woodsorrel toxic to cats?
- Yes. Great Yellow Woodsorrel is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- What pollinators does Great Yellow Woodsorrel attract?
- Great Yellow Woodsorrel draws bees and beetles.
- Is Great Yellow Woodsorrel HOA-friendly?
- Great Yellow Woodsorrel is generally an HOA-friendly choice in the right placement, with low maintenance.
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.
Pollinator Patch flags toxic plants like Great Yellow Woodsorrel and shows pet-safe natives for your ecoregion instead.
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