Growing Wild Garlic in a Damp Shaded Garden

Why wild garlic suits damp shade

Wild garlic, also called ramsons or Allium ursinum, is one of the most generous plants you can grow in the awkward, damp, shaded corners of a British garden. It emerges in late winter as a haze of bright green blades, carpets the ground through spring, opens white starry flowers in April, and then discreetly disappears by early summer. It asks for very little: moist soil, dappled light, and a bit of room to spread.

It is a true native, found in ancient woods, hedge banks and stream sides across the country, and it grows best in humus-rich soil that never quite dries out. If you have a north-facing border beneath a deciduous tree, or a damp strip along a hedge, wild garlic will settle in as though it has always been there.

Choose the spot with care

Before you plant, think about the two things wild garlic does best: it spreads, and it smells. Both are lovely in the right place and tiresome in the wrong one.

• Keep it away from the back door, the patio, the washing line and any bedroom window you open in spring. The scent is delicious in a pesto but powerful enough to perfume laundry.
• Avoid planting into a neat lawn or among low alpines. Seedlings appear in surprising places, and the bulbs are fiddly to lift once they are mixed in.
• Do not let it loose in a vegetable bed, where it will outcompete small seedlings and be almost impossible to clear.
• Good spots include shady ground under deciduous trees, a damp corner with hard edging, or a bottomless bucket or old sink sunk into the soil.
• Dry shade and thin chalky soils will leave it sulking and small unless you work in plenty of leafmould first.

Planting and establishing

The easiest way to start is with dormant bulbs, planted in late summer or early autumn while the ground is still warm. Set them about 5cm deep and 10–15cm apart, in loose drifts rather than tidy rows, and water them in if the autumn turns dry. Bulbs sold “in the green” in spring also establish well if you keep them watered for their first season.

Growing from seed is slower but free. Sow fresh seed as soon as it is ripe in early summer, in a pot kept moist, cool and shaded. It needs cold and darkness to germinate, and germination is erratic — some seedlings appear the following spring, others a year later. Expect flowers in two to four years.

Please do not dig plants from the wild. Uprooting wild plants without the landowner’s permission is an offence under the Wildlife and Countryside Act 1981. Buy from a nursery, or accept a division from a friend whose patch has become too enthusiastic.

Looking after it through the year

Once established, wild garlic needs almost no attention. Feed the ground with leafmould or garden compost each autumn, and water in dry springs while the leaves are growing. Mark the spot with a few small canes, because the patch will be bare and invisible from July until January, and it is easily forked over by mistake.

Good companions are ferns, hostas, wood anemone, sweet woodruff and hardy geraniums, which fill the gap after the garlic dies back. Snowdrops and winter aconites can flower just before it, giving you a longer run of interest in the same damp shade. The foliage is largely ignored by slugs, rabbits and deer, which is a rare pleasure in a woodland garden.

Wildlife value

This is one of the best early nectar and pollen sources available in shady gardens. Its flowers open from March into May, when bumblebee queens are founding new nests and solitary bees are emerging, and they are worked steadily by bees, hoverflies and small beetles. Leaving a few flower heads to set seed feeds nothing directly, but it does keep the colony going for future springs.

The dense spring canopy also shelters ground beetles and other invertebrates in damp soil, and it suppresses weeds without any need for digging or spraying. For a wildlife-friendly patch of difficult shade, it earns its place many times over.

Harvesting and keeping it in check

Pick leaves from February until the flower buds open, when they are at their most tender and aromatic. Take one leaf from each plant rather than pulling the bulb, and wash them well — the leaves grow close to the soil. They make excellent pesto, soup, butter, omelettes and salads, and the flowers are pretty scattered over a spring dish. Any surplus freezes well blitzed with olive oil.

To limit spread, cut the flower heads off in late May before the seed ripens. You will lose some wildlife value, so many gardeners compromise: deadhead the plants nearest paths and seating, and let a patch further back seed freely.

To remove a patch, lift the bulbs with a fork in autumn or early spring while the leaves show you where they are, then sieve the soil for strays. Small bulbs left behind will regrow, so be prepared to revisit the spot, or smother the area with a thick mulch or cardboard for a full season.

Planted thoughtfully in damp shade, well away from the house and the washing line, wild garlic gives you spring greenery, early bees and a free harvest — and then tidies itself away before summer.