Can we put anything on the base of our crabapple tree suckers? We try to cut them away, but we can't seem to keep up.
Certified GKH Gardening Expert
Trees normally start sending up more suckers when they are under more stress than usual. The best way to reduce the suckers is to figure out what is causing stress to the tree and reduce this stress. It will put out fewer suckers. This article may help as well: https://www.gardeningknowhow.com/ornamental/trees/tgen/tree-sucker-removal-and-tree-sucker-control.htm