Christmas Cactus Root All Rotted

Question

What can we do. I’ve had it for many years, it goes outside in the summer and comes inside in the fall.

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Answer 1

You might be able to save it by repotting it in cactus potting mix. Carefully remove the root ball and wash away the soil. Trim away any roots that appear rotted. Let the plant dry out for a day and repot the next morning. Clean the pot with a 10 percent bleach solution or use a new pot. Then refill with fresh potting mix and replant. Allow the soil to dry out well between waterings.

https://www.gardeningknowhow.com/ornamental/cacti-succulents/christmas-cactus/overwatered-christmas-cactus.htm

https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm