Something is eating the leaves from my female (red berries) holly shrub, up the main stem and from the main stem, up the branches. New growth is still appearing at the ends of the branches. There are no visible signs of insects on the top or bottom of the leaves. Remaining leaves all look healthy, green and shiny. How do I address this? Pruning will destroy the shrub.
Certified GKH Gardening Expert
There are several insects that could be feasting on your shrub. However, regardless of which one it is, I would recommend neem oil. This natural insecticide/fungicide is effective on a wide variety pests. Here is more information: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm