The sicon of the ruby cactus is turning yellow and dry from bottom after 3 days of purchasing from nursery and it’s not repoted
and watered very little; why its turning yellow when the stem is all green? I bought it from green house nursery 3 days before and kept it indoors where bright light comes but does not hit directly. Also, I didn’t repot it until now. Watered it 8-10 drops from top when the soil was literally dry to touch. But still the the ruby ball (sicon) is turning yellow and dry while the stem remains green.( as shown in pict)
Certified GKH Gardening Expert
Unfortunately, it may have been overwatered at the nursery. This is a graft failure, which is often brought on by an infection.
The top is likely on its way out, as these are not meant to live very long anyway. This is intended to be a temporary plant for ornamental purposes, although some can be kept alive for several years.
At this time, there is not likely a way to correct it. You can make an attempt with peroxide, at a ratio of 1/4 peroxide to 3/4 water. Water this in once, and then once more after the soil dries completely. This may help to slow things down some, but this is likely on its way out, unfortunately.