When to Trim Your Hedges in New Zealand

Trimming at the right time is the difference between a hedge that thickens beautifully and one that sulks with bare patches. The rules are simpler than they look: evergreens are trimmed for shape, flowering shrubs are pruned around their flowering, and a few plants should never be cut hard at all.

The general rule for evergreen hedges

Most evergreen hedges — griselinia, pittosporum, laurel and similar Canterbury staples — respond best to a main trim in late spring or early summer once the spring flush has firmed up, with a lighter tidy in late summer or early autumn. Avoid cutting in the coldest winter weeks or in the hottest dry spell, when fresh cuts recover slowly.

Flowering shrubs follow the flowers

Flowering shrubs follow one rule: spring flowerers are pruned just after flowering, since they bloom on last season's wood, while autumn flowerers are pruned in late winter or early spring before new growth starts. Shearing a spring-flowering shrub in winter simply removes the coming display.

What never to cut hard

Conifers deserve caution — most do not resprout from old brown wood, so a hard cut into bare stems leaves a permanent hole. Trim conifers lightly and often, never beyond the green growth. And always step back to check the line as you work: hedges should taper slightly, wider at the base, so light reaches the lower leaves.

A simple yearly rhythm

If the ladders, the levelling and the clean-up sound like a lot, our trimming service covers shaping, tidy-ups and waste removal across Christchurch, seven days a week. See the trimming detail page or contact us to book a time.