Best Time to Prune Trees in Edmonton

For most trees in Edmonton, the best time to prune is late winter to early spring while the tree is dormant. But timing varies by species, and elms have a legal pruning ban you must follow.

Why dormant-season pruning is best

Pruning while a tree is dormant, in late winter before growth starts, has real advantages. The tree is under less stress, wounds close faster once spring growth begins, and with no leaves in the way we can see the structure clearly and make better cuts. There are also fewer insects and diseases active to enter fresh cuts.

The elm pruning ban: April 1 to September 30

Elms are the big exception. Alberta law bans pruning elm trees from April 1 to September 30, because fresh cuts in warm weather attract the beetles that spread Dutch elm disease. Elms should only be pruned in late autumn and winter, and elm wood must be disposed of properly. See our elm pruning service for how we handle this.

Timing by species

• Most shade and deciduous trees: late winter while dormant
• Elms: only outside the April 1 to September 30 ban
• Spring-flowering shrubs like lilac: right after they finish blooming, so you keep next year's flowers
• Maples: avoid heavy pruning in late winter when they bleed sap; the dormant season or summer is better
• Fruit trees like crabapple: the dormant season, for health and shape

Not sure when to prune your tree?

When in doubt, ask. We can tell you the right timing for your specific trees and take care of the work at the best time of year. Learn more about our tree pruning service.