Hawthorn: when and how to prune

Crataegus monogyna

Clip a hawthorn hedge in June–September, ideally in late June after flowering and, if needed, again in late August; prune a free-standing hawthorn in November–March.

Hawthorn flowers on the previous year’s wood: clip the hedge at the right time and leave part of it, and you keep flowers for the bees and berries for the birds.

Updated on 10 October 2026

Key facts
Pruning months	June–September and November–March
As a hedge	June–September
As a free-standing tree	November–March
Nesting season (15 March–15 August)	Take care in March and June–August
Flowering	May
Good for bees, butterflies and birds	Yes, for bees, butterflies and birds
Native to Belgium	Yes

Hawthorn: when to prune it?

As a hedge

As a free-standing tree

Only clip a hedge after flowering, in late June: that way you haven’t cut off the May blossom. A second, light trim in late August or September keeps the hedge crisp.

Prune a free-standing hawthorn or a loosely growing hedge in winter, from November to March, when it is dormant. You can then also see clearly which branches can go.

Prune in dry weather: in warm, wet weather fireblight, a disease of hawthorn and fruit trees, spreads more easily.

What else to prune in those months? January · February · March · June · July · August · September · November · December

Hawthorn: how to prune it?

Wear sturdy gloves and long sleeves: the thorns are sharp.
Before every summer trim, check for nesting birds.
Clip the hedge slightly narrower at the top than at the bottom and cut the new shoots back to a few centimetres above the previous cut.
Cut a young hedge back to about 15 cm above the ground in winter after planting; that way it thickens from the base.
An old, bare hedge can be cut back hard in winter, or laid: the stems are cut halfway through and bent over at an angle, so a dense, living hedge grows again.
If leaves and twigs wilt and turn blackish brown as if scorched, with a hooked tip, think of fireblight: cut well back into healthy wood and disinfect your secateurs after every cut.

How much to cut, and how often?

A hedge: one or two trims a year, each time removing only the new growth.
A free-standing hawthorn needs little: in winter, remove dead, crossing and low branches.
If you want flowers and berries, don’t clip the whole hedge every year: clip one side at a time, or let a section grow freely and only prune it in winter.

What does it mean for wildlife?

Few shrubs are as valuable: in May the blossom is full of bees and hoverflies, and the leaves feed the caterpillars of dozens of butterfly and moth species.
In September–October thrushes, blackbirds, fieldfares and redwings eat the red berries. A hedge clipped short every year after flowering bears few of them, so leave part of it unclipped.
A dense thorny hedge is a safe place to nest. From 15 March to 15 August, check first for an active nest, as disturbing it is against the law; a second trim after mid-August falls outside the nesting season.
Hedgehogs and mice find shelter under the thorns: leave the leaves there.

Common mistakes

Clipping the hedge in May: you cut off the blossom and disturb nesting birds.
Clipping the whole hedge short every year, so there are never any berries.
Cutting out branches with fireblight in wet weather, or not disinfecting the secateurs afterwards.
Working in a thorny hedge without sturdy gloves.

Caution: Don’t clip during the nesting season while birds are still nesting in the hedge: check first. Disinfect your secateurs if you cut out branches with fireblight.

Nearby: related pruning guides

Plant profile: Hawthorn · Pruning calendar and basic rules