PlantFiles: Giant Oxalis
Oxalis gigantea

I grow this Oxalis as a houseplant with summers outdoors in full sun. With a focus on bonsai, I look for unusual plants that get woody stems. This makes a very unusual, interesting, flowering, and very easy care, if it wants to go dormant stop watering for a few months and it will start to regrow when watering starts again. Propagates best for me with stem cuttings in late winter-has rooted for me in about 3 wks.

This is an odd sort of succulent Oxalis from South America where it can survive on almost no wate (Atacama desert)... has a main, succulent stem (I've see up to 3' tall, but could grow taller maybe) and short to trailing branches with succulent sort of rubbery leaves. The flowers are about 1/2" across and bright yellow. I have seen this plant do well in sun and shade. It is certainly quite hardy here in So CAl, but in my climate (9b) it is deciduous. Not sure it if is in a warmer climate or not. Turns into an ugly stick in winter, but only for about 1-3 months, then leafs out first hint of warmth.