Garden

How often should you trim a hedge?

A hedge is not a lawn. Most species put on enough growth in a season for one or two cuts, and trimming too often stresses the plant and removes the flowers and berries that wildlife uses.

Trim most hedges once or twice a year, and formal hedges up to three times a year.

Range: 1 to 3 trims a year · checked 6 November 2026

Typical interval

What changes it

Formal, tight hedges such as box or privet: up to three cuts.
Informal and mixed hedges: one cut, or a rotational cut over two years.
Check for active nests before cutting and delay if there is one.
The RHS lists the right time for each species; check before you cut.

Do it

Check for active nests before you start.
Cut the sides first, then the top, working along a string line.
Remove no more than the year’s growth.
Clear the clippings and mulch around the base if the hedge needs it.

Put it in your schedule

The maker opens with Trim Hedges at every 6 months.

No account. The maker keeps the job in your browser and in the link.

The app’s default is differentThe app’s ready-made schedule uses every month for “Trim Hedges”. Set it to every 6 months for an informal hedge, or twice a year for a formal one.

Why this interval

The sources below give the full picture. The factors above are the ones that move the interval for most situations.

The range is a starting point, not a rule for every situation. The factors above are the ones the sources name; if your situation is different, use the range and ask a professional where the job needs one.

If you want the job in a schedule with reminders, open the schedule maker with this job already loaded. The how often index has the other jobs.

Trim Hedges questions

What changes the interval?

Formal, tight hedges such as box or privet: up to three cuts. Informal and mixed hedges: one cut, or a rotational cut over two years. Check for active nests before cutting and delay if there is one. The RHS lists the right time for each species; check before you cut.

Does the app use this interval?

The app’s ready-made schedule uses every month for “Trim Hedges”. Set it to every 6 months for an informal hedge, or twice a year for a formal one.

Where does this come from?

The answer is checked against 2 primary sources, linked under Sources with the date each was read.

Sources

The interval and the factors on this page are checked against these sources.

How to trim a hedge. Royal Horticultural Society.Up to three trims a year for formal hedges; lighter, rotational trimming for informal hedges. Checked 6 November 2026.
How to grow hedges. Royal Horticultural Society.An annual trim for most mature hedges. Checked 6 November 2026.