Why Coppiced Wood Deserves a Place in the Garden

If you manage a hedge, a patch of hazel or a willow stool, you already know the rhythm of coppicing: cut low in winter, let the stems regrow, and return in a few years for another crop. What often gets overlooked is that the smallest material — the brash, the twiggy tops, the bark that peels away — is not waste to be burnt. It is one of the most useful things you can put on a garden.

Woodchip and brash will suppress weeds, feed the soil food web, hold moisture through a dry July, and give you paths that feel good underfoot without a single bag of anything bought in. Better still, using your own coppice closes a loop: the wood you cut from the woodland improves the ground you grow in.

Below is how to sort, process and lay it, season by season.

Sorting Your Cut Before You Chip Anything

The first job after cutting is not chipping — it is sorting. Coppice material falls into three rough grades, and each has a best use.

• Stems thicker than your wrist: firewood, bean poles, pea sticks, or split for handles. Keep these out of the chipper.
• Straight middle-sized rods: the classic coppice crop. Use for stakes, hurdles, plant supports or edging. Anything left over can be chipped.
• Brash and twiggy tops: too small to use as timber, perfect for paths. Run it through a shredder, or lay it whole as the base layer of a path.

Bark is worth separating if it comes away in strips — hazel and willow both peel neatly in spring. Rolled or flattened, strips make a soft, rustic edge to a bed that lasts a season or two and then quietly rots into the soil.

Making Woodchip Mulch That Actually Works

Fresh chip is fine as a surface mulch, and the old worry about it “stealing nitrogen” is mostly misplaced. Nitrogen is only tied up in the thin layer where chip meets soil, so as long as you spread it on the surface and never dig it in, your plants will not go hungry. Keep it 5–10cm clear of trunks and stems to avoid softening the bark.

For beds and borders, spread to a depth of 50–75mm after a good water and a weed. That is deep enough to stop annual weeds germinating and to slow evaporation, but shallow enough that rain still reaches the roots. A finer chip breaks down faster and suits vegetable beds and around soft fruit; a coarser, twiggier chip lasts longer and suits shrubs, trees and hedges.

Two caveats worth knowing. Walnut and any diseased material should stay out of the barrow. Willow chip will happily root if it is fresh — either let it sit in a heap for a few weeks until it heats and dies, or save it for paths, where rooting does not matter.

Paths From Brash and Chip

A coppice path is built in layers, and the layers are the trick. Start by clearing the line and tamping the ground reasonably firm. Then lay the roughest brash — the twiggy stuff you would not bother chipping — as a base of 100–150mm. It knits together, spreads weight and stops the surface chip from sinking into mud.

On top of that goes your chip, laid to 75–100mm. Rake it out, water it if the weather is dry, and walk it in. The first rain settles it; after a few weeks it firms up into a surface that is quiet, springy and kind to knees.

Two details make the difference between a path that lasts five years and one that lasts one. Edge both sides with larger rods, pegged with hazel stakes, to stop the chip migrating into the beds. And where the path crosses low, wet ground, put down a woven membrane first — not plastic sheeting, which puddles and tears, but a permeable fabric that lets water through while holding the chip in place.

Edging, Bark and the Smaller Touches

Small coppice wood is superb for edging. Short hazel or willow rods knocked in at 20–30cm intervals make a flexible, attractive border that you can lift and move as beds change. Split rods, laid flat and pinned, hold a chip path in place beautifully.

Bark strips, meanwhile, are the quiet hero of the whole exercise. Lay them around fruit bushes or along the front of a border and they will suppress weeds, look settled from day one, and slowly crumble into the soil, adding organic matter without any effort from you.

If you have a surplus of chip and no immediate use, heap it for a year. Turned once or twice, it becomes a superb dark mulch for the following spring — and it is free.

Working With the Coppice Cycle

The beauty of all this is that it fits the woodland's own timetable. Cut in winter when the sap is down and the wood is drier, lighter and less likely to root. Process the brash on a dry day so it does not clog the shredder. Spread mulch in late winter or early spring, when the ground is moist and the weeds have not yet stirred.

Rotate your stools — hazel on a seven-year cycle, willow every three or four — and you will always have a modest, steady supply: enough to top up the paths, refresh the borders and edge a bed or two. Nothing is wasted, nothing is bought, and every barrow you wheel out improves the ground it lands on.

Start small. Chip one heap this winter, lay one short path, and see how the garden responds. Most people, once they have walked on a coppiced path in bare feet, never go back to gravel.