When to Prune Trees, Shrubs & Flowers in Illinois (Zone 5)
- Happy Rooster

- 3 days ago
- 1 min read
Updated: 2 days ago

Quick Answer
Most trees and shrubs should be pruned in late winter to early spring, while flowering plants depend on when they bloom.
How It Actually Works
Spring-flowering shrubs (like lilacs): prune after they bloom
Summer-flowering shrubs: prune in late winter/early spring
Trees: best pruned while dormant (late winter)
Perennials: usually cut back in fall or early spring
Pruning at the wrong time can reduce blooms or stress the plant.
What Homeowners Should Do
Prune dormant plants before new growth starts
Avoid heavy pruning in extreme heat
Know your plant type before cutting



