Why Hazel Earns Its Place in a British Garden

Few native trees work as hard as hazel. It gives you catkins in February when almost nothing else is flowering, soft green leaves in spring, a crop of nuts in late summer, butter-yellow foliage in autumn, and straight, flexible stems you can cut for bean poles and pea sticks. Plant it as a hedge, a coppice stool or a standalone tree and you get seasonal structure plus a larder for wildlife — all from a nut you can pick up on a walk in October.

Hazel is Corylus avellana, the wild hazel of our hedgerows and ancient woodlands. It is tough, tolerant of most soils, happy in sun or light shade, and it responds beautifully to hard pruning. Growing it from seed is slow but genuinely satisfying, and the saplings you raise will be far sturdier than anything hurried along in a warm greenhouse.

Collecting Ripe Nuts in Autumn

Timing matters more than anything else. Hazel nuts ripen from late August through October, depending on where you are and how warm the summer has been. Watch the husks: when they start turning from green to yellow-brown, and the nuts inside are pale brown with a papery case, they are ready. Squirrels know this too, and they will strip a tree days before you get there, so start checking early.

Gather nuts from the tree while the husks are just beginning to split, or pick them up from the ground on the same day they fall. Nuts left lying will be found by mice and voles overnight. Look for heavy, unmarked shells — a small round hole means a nut weevil has already been inside, so discard those.

• Best sign of ripeness: the nut rattles slightly in the husk and the shell has turned from white-green to warm brown.
• Avoid: nuts with pinprick holes, dark patches or a musty smell.
• Take only a handful from any one hedgerow, and never dig plants from the wild.

Keeping the Nuts Alive Until Spring

Hazelnuts are what growers call recalcitrant seed — they will not survive being dried out and stored in a paper envelope on a shelf. They need to stay moist and cold, which is exactly what a British winter provides. Sow them fresh, and nature does the work for you.

If you cannot sow immediately, store the nuts in a breathable bag with slightly damp sand or vermiculite, kept somewhere cool — a shed, a garage or the salad drawer of the fridge. Check them every few weeks and remove any that go soft or mouldy. This cold, damp period is the stratification hazel needs to break dormancy and germinate properly in spring.

Sowing in Deep Pots

Hazel puts down a strong, deep root system, and short seed trays will leave you with stunted, root-circled saplings. Use individual deep pots, at least 30cm tall, or a deep crate with drainage holes.

• Compost: a loam-based mix with a handful of grit for drainage, or half peat-free multipurpose and half garden soil.
• Depth: sow each nut about 4–5cm deep, on its side, one per pot.
• Protection: cover with wire mesh or a slate weighted down. Mice and squirrels will dig out a whole tray in one night.
• Position: outdoors, in a cold frame or against a sheltered wall, in light shade.

Shoots usually appear between March and May. Some nuts sit tight until the second spring, so never tip out a pot that looks empty. Keep the pots watered through dry spells in summer. Grow your seedlings on for two or three years until they are 60–90cm tall with a woody base before planting them out.

Planting Out and the First Coppice Cut

Plant bare-root or pot-grown hazel between November and March, when the ground is workable and the tree is dormant. Space plants about 45–60cm apart for a dense hedge or a coppice row, or 3–4m apart if you want a stand of trees grown for nuts. Mulch well and water through the first two summers.

For a traditional multi-stemmed hazel, cut the young tree back to about 5cm above ground level after its first full year. It looks drastic, but it triggers the stool to throw up several strong stems instead of one. From then on, cut a proportion of the stems on a seven-to-ten-year rotation and you will always have a mix of ages — and a supply of poles for the garden.

What Hazel Gives Back to Wildlife and the Seasons

This is the real reward. Hazel catkins open in February and March, offering one of the earliest pollen sources for queen bumblebees and honeybees emerging from winter. The leaves feed the caterpillars of dozens of moth species, which in turn feed nesting blue tits and great tits in spring.

Come autumn, the nuts are a lifeline. Grey squirrels cache them, wood mice and bank voles carry them off, jays bury them, and nuthatches wedge them into bark to hammer open. In the rare places where they survive, dormice depend on hazel nuts to fatten up before hibernation — surveyors can even tell dormice apart from other rodents by the neat, round hole they gnaw through the shell. Leave some nuts on the ground and in the husks; the wildlife needs them more than your kitchen does.

Then there is the structure. A hazel hedge gives you a dense nesting corridor at 2–3m. A coppiced stool gives you winter stems, cut-gold in low sunlight. Either way, you end up with a tree that earns its keep in every month of the year — and all from a pocketful of nuts gathered on an autumn walk.