Shrub Trimming in Michigan: When and How to Do It Right

Why Timing Matters So Much

Shrub trimming isn't a one-size-fits-all task. The right time to prune depends entirely on the species and when it blooms. Pruning a spring-blooming shrub in early spring — right before it's about to flower — removes all of this year's buds and you lose the bloom entirely.

The Two Categories of Shrubs

Spring-blooming shrubs (lilac, forsythia, viburnum, weigela) bloom on "old wood" — growth from last year. Prune these immediately after they finish blooming in late May or early June. Pruning in fall, winter, or early spring removes the buds for the coming season.

Summer and fall-blooming shrubs (spirea, potentilla, rose of Sharon, panicle hydrangea) bloom on "new wood" — growth from the current season. Prune these in early spring before new growth emerges. This promotes vigorous new growth and maximizes blooms.

General Timing for Macomb County

How to Prune Properly

Use sharp, clean tools. Dull blades crush stems rather than cutting cleanly, creating entry points for disease. Clean blades between plants if you suspect disease.

Don't cut more than one-third in a season. Heavy pruning weakens the plant. If a shrub is badly overgrown, renovate it over 2–3 seasons.

Cut to a bud or branch junction. Never leave a stub — it dies back and creates disease problems. Make cuts just above an outward-facing bud at a slight angle.

Step back frequently. It's easy to go too far. Step back to assess shape every few cuts.

Special Cases

Tri-Point Landscaping provides professional shrub trimming and pruning services throughout Washington Township and Macomb County. Schedule your service or call (586) 327-8080.