Water Shoots After Tree Pruning: Why They Appear and What to Do

Those vigorous vertical shoots appearing after pruning are not a sign the tree is recovering — here's what they actually mean and how to manage them.

What water shoots (epicormic growth) are

Water shoots — also called epicormic shoots — are vigorous vertical shoots that emerge from dormant buds below the bark. The tree produces them in response to stress: heavy pruning, wounding, or root damage. They grow fast, are weakly attached, and can produce several metres of growth in a single season.

Why they appear after pruning

When large amounts of live canopy are removed suddenly, the tree's root-to-shoot balance is disrupted. The roots were supplying energy for a larger canopy than now exists. The tree responds by producing rapid growth to restore balance. Over-pruned trees and lopped trees produce the most vigorous epicormic growth.

How AS4373 prevents excessive water shoots

The Australian standard limits crown removal to around 30% per season. This gradual reduction doesn't trigger the same stress response as removing 60–70% of the canopy in one cut. Correctly pruned trees produce minimal water shoots.

What to do about existing water shoots

Water shoots that are weakly attached should be removed while they're small — ideally in the first season. Once they develop secondary growth and a larger attachment zone, removal creates a larger wound. Small shoots can be rubbed off by hand while still green.