In my small hoya collection, I have a pubicalyx "Black Dragon". I've been cautious about overwatering in winter - too cautious. Several days ago I noticed that the leaves had a lime green cast and they started curling inward. Then I noticed that the plant was very loose in the pot. Cleary, there's been some root damage.
I watered the plant well and put it in a warm terrarium. However, I now see some spotting on the leaves which I think is a fungus. The "tough spot" I'm in is that the plant/roots need the humid environment to recover, but that environment is conducive to the fungal problem. I'd so appreciate any advice to balance the situation so that the plant grows on nicely. TIA