Are there any pests for Shefflera? And what is best method of getting rid of them? Mine is about 15 feet tall and I wonder how far back I may safely cut it. It grows in our atrium which is unheated but covered. The temp never goes below 40 degrees. Portland, Or. Thank you for any help.
Certified GKH Gardening Expert
There are a few pests that typically affect Schefflera, such as aphids, spider mites and mealybugs. These are all treated with a standard insecticide. I like neem oil, myself. It is safe for people and pets, but very effective on bad bugs. Here is more information on it:
These plants will tolerate a heavy pruning, but if you want to play on the safe side, do not trim more than 1/3 of the plant back in one season.