We have a beautiful ornamental willow tree with pink foliage. Ants appear to be burrowing holes into the bark. There are many holes and trail marks. What can we do about it?
Certified GKH Gardening Expert
Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/plant-problems/pests/keeping-ants-of-flowering-vines-vegetables-and-flowers.htm