Q.My Lemon Tree Full Grown Was Infected By Scale, 75% Turned Bald, Leafless, What Shall I Do ???
i showered the lemon tree with oil from nursery shop. Please advise, the tree has not grown normal new leaves yet >> what shall I do ??
Certified GKH Gardening Expert
I suggest doing a trim or light prune to the tree to make sure all the dead leaves and stems are removed. This article will give you details about pruning:
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-pruning.htm
It's normal for a certain amount of leaf drop to occur in winter and into early spring. This article identifies all the nutrients required by healthy lemon trees.
https://www.gardeningknowhow.com/edible/fruits/lemons/lemon-tree-leaf-drop.htm
In the spring when the weather warms, you may want to fertilize the tree
https://www.gardeningknowhow.com/edible/fruits/lemons/learn-about-fertilizer-for-a-lemon-tree.htm
You didn't mention how long ago you treated the tree for scale. It may be that it's just taking some time to recover. There's no guarantee in these situations, but I have a feeling if you give it some time and feed it in the spring, it should return to health,.