Oxalis leaf drop

For Oxalis triangularis, gradual leaf loss and a pause in new growth can be dormancy. Sudden collapse after drought or soft storage tissue in wet mix needs a different response.

Check what remains underground

Firm rhizomes can survive after the top dies back. Remove dead foliage and greatly reduce watering during a true rest period. As new shoots appear, return to bright light and resume watering for active growth.

If the plant is still growing and only the root ball is dry, water it evenly and drain. Discard mushy rhizomes; keeping them wet in hopes of waking them will not restore them. Dormancy timing varies rather than following one fixed month.