Oxalis stricta (Upright yellow sorrel)

Cultivation

Prefers well-drained, alkaline, sand or loam. Tolerates a wide range of conditions. Very invasive. Often behaves as an annual in colder areas.

Suggested uses

Gravel, Ground Cover, Containers/Patio, Rock, Beds and borders, Cottage/Informal, City, Drought Tolerant, Low Maintenance, Garden edging

UK hardiness

H7

USDA zones

Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9, Zone 10

Sunset zone

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Upright, Trailing

Native to

Mexico, Central North America, Eastern North America, Southwestern Canada, China

Drought tolerant

Yes

Flood tolerant

No

Toxicity

Though leaves are edible, and have been used for medicinal purposes, consuming large quantities of leaves is toxic.