Great Yellow Woodsorrel
Oxalis grandis
Last reviewed: June 2026
Great Yellow Woodsorrel is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (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.
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.