Cedar Hedge Maintenance: How Often to Trim

Once a year or twice: it depends on your hedge

A cedar hedge that's already well shaped, with a height and width you're happy with, can often get by with just one maintenance trim per year. That's typically the case for a hedge that's been looked after for a few seasons and holds its shape without much effort.

On the other hand, a very formal hedge, trimmed to a crisp straight line, or a hedge that grows quickly because of its exposure and soil, might need two trims in the same season: a first one to straighten the line, and a second to catch up on summer growth before it gets out of hand.

A less structured hedge, with a more natural look, generally needs fewer visits. The goal isn't to follow a universal rule, but to adjust the frequency to what your hedge actually does on your property.

Signs it's time to trim

A few simple cues can tell you if your hedge is ready for a trim:

• new growth clearly extends past last year's line
• the hedge starts losing its clean shape (base wider than the top, or the opposite)
• branches are spilling over a walkway, sidewalk, or fence
• the inside of the hedge looks dense and dark, a sign it would benefit from being thinned out

A rule of thumb often used in horticulture is to trim once the season's new growth has reached about six inches (15 cm). It's not an exact science, but it helps avoid letting the hedge get too overgrown before stepping in.

When to trim during the season

At Gemme sa taille, the trimming season runs from mid-April to the end of October. Cutting happens once the year's growth has come in, generally from late June through fall. This gives the cedar time to produce its seasonal growth before it's trimmed back, rather than cutting too early and having to come back again.

If your hedge needs two trims in the same year, the first one usually straightens out the shape after the early-summer growth spurt, and the second comes later in the season to clean up the regrowth before fall.

Neglected, too tall, or too wide hedges

A hedge that hasn't been trimmed in a long time can't always be fixed in one go. Cedar regrows poorly, sometimes not at all, on old wood without needles. Cutting too deep all at once risks leaving permanent gaps in the foliage.

That's why a very neglected hedge is often brought back gradually rather than with one severe cut. Depending on the condition of your hedge, the type of work can vary: a formative trim to restore a clean line, rejuvenation pruning to reduce the size in stages, or a hard cut when the situation calls for it. You can see the details of each approach on the types of trimming page, which covers maintenance, formative trimming, rejuvenation, decorative shaping, cutting back, and hard pruning.

Either way, you'll get a straight answer about what your hedge can handle this year and what should wait until next season. No promises are made about the speed or quality of regrowth: that depends on the cedar itself, not the cut.

How to describe your hedge for a written price

To get a price with no site visit, a few details are enough in the online quote request:

• the total length of the hedge
• the current height and the desired height
• the current width and the desired width
• whether it's a routine maintenance trim or a bigger correction
• access to the property (obstacles, slope, nearby fence)

With these details, the written price arrives in under 3 minutes, no need to wait for an on-site appointment. Gemme sa taille serves eight regions, including Montérégie, the South Shore and North Shore of Montreal, Montreal, the Laurentians, the Eastern Townships, Quebec City, and Saguenay-Lac-Saint-Jean. You can check if your area is covered on the service areas page.

Related reading:

• How Much Does Hedge Trimming Cost? The Real Factors to Know
• Cedar Hedge Maintenance: A Guide for Your Hedge in Montérégie
• Hedge Trimming in Brossard: Maintenance, Shaping, or Renewal Based on Your Cedar's Age

Frequently asked questions