Scale insects, which look like tiny dots or scales attached to the leaves, often infest.

Hi Skeet, No, I haven't measured the temp of the roots yet.

Aug 14, my dwarf blood orange tree leaves are turning yellow and dropping. i am not over or under watering.

i see no bug damage. no snails or slugs are present. i have given the tree iron. i have it. what else can i treegrinding.barted Reading Time: 4 mins.

Feb 05, It has only been approximately a week sense the tree started to drop it leaves, it is not all that uncommon for the leaf drop to have not yet stopped. If indeed the tree's problem was caused by the stress of high foliage temperatures, and low root zone temperatures, that stress cues the leaves to reduce the production of a hormone called auxin and to increase the liberation of ethylene.

Apr 22, If your orange leaves are curling, the culprit might just be a fungal disease. Both bacterial blast and botrytis disease result in leaf curling. Bacterial blast begins with black spots on the petiole and moves on to the axil. Eventually, the leaves curl, wither, and drop.