Christmas Cactus limp leaves

The flat “leaves” are stem segments. Feel the mix and the base: wrinkled segments over a dry root ball need a different response from wilt over wet mix.

Dry mix, firm base

Water thoroughly and drain. Segments may take time to regain firmness. Check again before the whole root ball dries hard, especially while buds or flowers are present.

Wet mix or soft base

Inspect roots if wilt continues. Remove mushy roots and use fresh, airy mix in a draining pot. If the base is failing, preserve firm segments above it and follow the root rot guide for rooting a cutting.