Will Oxalis Triangularis Survive Winter?

Hardiness varies depending on the species, and some, including purple shamrock (Oxalis triangularis), tolerate winters in USDA plant hardiness zone 6. However, most are frost-tender and won't survive frosty weather. ... You can also put the plants in a pot and allow them to go completely dormant, which means no watering.

Do oxalis come back every year?

Oxalis are perennial plants but can give the appearance of annuals by going dormant in winter or during droughts. Frost-tender oxalis are sometimes treated as annuals in cold winter areas.

How cold can oxalis tolerate?

These plants like temperatures between 60 and 75 degrees Fahrenheit, which makes them especially suitable to grow indoors in average room temperatures. They can tolerate nighttime temperatures down to 50 degrees Fahrenheit.