Hi Joan, I would check for spider mites. Look closely they are probably all around the curled leaf and then in and around the others.. The other leaves look green and healthy so i wouldn't worry to much. How is the watering going? Not to wet is it? Let it dry between watering... The buyer 3 in 1 Insecticide is a great product. Make sure you spray on a cloudy day or keep the tree from direct sun after spraying... All over tree. Under leaves too... Good luck!! Laura

To an older plant which has more leaves they are as with many things in small quantities spider mites are generally harmless. Some plants for whatever reason may not be impacted as much as others. I have had Plumeria next to each other and one is infested with spider mites and the other has nothing. You can see in your picture just above the one current leaf the spider mite web, a light color speck, and the look of the damage done is telltale. I hope that helps you.

Well, first off, it's an Adenium, like Michael said. It's a member of the Apocynaceae family, like Plumeria and Oleander/Nerium. Water is probably not the problem. The branches probably were damaged by the cold. If it was exposed to freezing temperatures for an extended time, that might be the problem. See how your leaves are drooping, but still green? Plants don't do that when they get dehydrated. They suck water and nutrients out of the leaf, leaving it yellow and withered before it drops off. That tells me it's probably a reaction to the cold exposure. Check the caudex (the swollen trunk at the base of the plant). If it is still firm, it probably isn't too damaged. I would also unpot it and check the swollen roots beneath the soil. If they don't show signs of rot, then you're probably safe, although it wouldn't hurt to apply some anti-fungal. If isn't firm, you can look up a course of action. Some people will cut the dead parts out, it's a pretty drastic operation and I'm not an expert on that, since I've never had to deal with it. Luckily, if it does survive, adeniums are absurdly hardy. They don't like cold or rot, but they will tolerate unbelievable amounts of physical mutilation. You'll probably loose the branches from where the withering is and above. Cut them off if they don't recover and you notice the withering spreading downwards. That will let the adenium form a callus. Careful, the sap is poisonous, like plumeria sap. Don't sweat the branches; adeniums usually get pruned down to about that level when they get as leggy as yours. Be careful with the watering, it might stay dormant all winter, and you shouldn't let it go completely without water, but you don't want it to rot either. Maybe give it a little water once or twice a month, it really depends on the potting medium.

Okay I will slow down on the fertiliser as I was only following the instructions on the bottle. Perhaps that is the reason. I water it once a week and it’s well draining soil so I don’t have an issue there, just the leaves are not as they were last summer. One of them has morphed into another leaf and I was getting paranoid. I love this plant to bits!