Bonide Sucker Punch Ready-To-Use, is a plant growth regulator that stops suckers sprouting from roots and pruning cuts, and lasts for 6 months.
For ornamental trees, fruit trees and other woody plants, landscape beds and lawns
For cut surfaces over an inch in diameter, apply immediately after pruning to protect the tree from invading insects and diseases. For small cut suckers or sprouts use Sucker Punch to stop them from re-sprouting. Apply by brushing on
Location of a pruning cut is critical to a tree’s response in growth and wound closure. Pruning cuts should be made just outside the branch collar. The branch collar contains trunk or parent branch tissues, and the tree will be harmed if you remove or damage it. If the cut is large, the tree may suffer permanent internal decay. https://csfs.colostate.edu/colorado-trees/selecting-planting-and-caring-for-trees/pruning/