Choosing Native Shrubs for a Coastal Garden

Why Coastal Gardens Need Different Thinking

A garden within a mile or two of the sea lives by different rules. Salt carried on the wind scorches tender leaves, drying winds strip moisture from evergreens in winter, and the soil is often thin, sandy and quick to drain. If you have stood on a clifftop path in Cornwall or a windswept stretch of the East Anglian coast, you will have noticed which plants survive there without any help at all. Those are the plants worth copying.

Native shrubs are an excellent starting point for coastal planting. They have evolved alongside our salt-laden gales and free-draining soils, so they establish quickly and ask for very little once settled. Better still, they knit together into the kind of dense, thorny cover that shelters birds, insects and small mammals. A coastal garden planted with the right natives becomes both a windbreak and a wildlife haven.

Understanding Your Coastal Conditions

Before choosing anything, spend a week or two watching how the wind moves across your plot. Most coastal gardens have a prevailing wind — usually south-westerly in the UK — and one side of the garden will take the brunt of it. That exposed edge is where your toughest, most salt-tolerant shrubs belong. Behind them, you can grow slightly softer things.

Soil matters just as much. Many coastal plots sit on sand, shingle or shallow chalk, all of which drain fast and hold few nutrients. Dig a spade-depth hole and see how quickly water disappears. If it drains within minutes, plan for drought-tolerant plants and be ready to water generously through the first two summers while roots establish.

• Exposure: note where salt spray lands and where wind funnels between buildings
• Soil: sandy, gravelly or chalky soils suit Mediterranean-style natives best
• Drainage: if water sits, you will need to add organic matter before planting
• Light: most coastal natives want full sun, so avoid shading them with fences

The Best Native Shrubs for Exposed Sites

Gorse (Ulex europaeus) is the quintessential coastal shrub and one of the finest windbreaks you can plant. Its dense, spiny growth shrugs off salt and gale alike, and the coconut-scented yellow flowers appear for much of the year. Plant it as a hedge along your most exposed boundary and it will shelter everything behind it. Give it room — it can reach two metres — and wear thick gloves when handling it.

Sea buckthorn (Hippophae rhamnoides) is another stalwart, with silvery foliage that reflects light and narrow leaves that resist wind damage. It is dioecious, meaning you need both a male and a female plant to get the bright orange berries. Those berries are tart but superb in jellies and cordials, and they are rich in vitamin C. Sea buckthorn spreads by suckers, so site it where it can roam or plant it in a generous border.

Elder (Sambucus nigra) is more tolerant of shelter and richer soil, but it will cope with coastal conditions if given a little protection when young. Its frothy white flower heads and dark berries are a wildlife magnet, and it responds well to hard pruning if it outgrows its space.

• Sea buckthorn: brilliant for exposed boundaries, needs male and female for berries
• Gorse: the toughest windbreak, flowers almost year-round
• Elder: better in semi-shelter, superb for birds and hedgerow crafts
• Wild privet: neat, semi-evergreen and clips beautifully into a low hedge

Planting and Establishing Your Shrubs

Autumn is the ideal time to plant, while the soil is still warm and rain is frequent. Bare-root plants are cheaper and establish better than pot-grown stock, provided you get them in before hard frosts. Dig a hole twice the width of the roots but no deeper, spread the roots out and firm the soil gently around them.

On very sandy ground, mix a bucketful of well-rotted compost into the backfill to help hold moisture. Water thoroughly after planting and keep watering through the first two summers — even drought-tolerant natives need help while their roots are finding their feet. A mulch of gravel or bark around the base will suppress weeds and stop moisture evaporating.

If your site is brutally exposed, consider a temporary windbreak of woven hazel or reed screening for the first year or two. Once the shrubs have grown a good root system, you can remove it and let them stand on their own.

Pruning for Hedgerow Crafts

One of the great pleasures of growing these shrubs is that the prunings feed straight into traditional crafts. Gorse, sea buckthorn and elder all respond well to regular cutting, and the material you remove is genuinely useful.

Sea buckthorn and elder wood is pale, fine-grained and surprisingly strong. Straight stems make excellent bean poles, pea sticks and tool handles, while thinner shoots can be woven into baskets and garden obelisks. Elder has a soft, pithy centre that is easy to hollow out, which is why it has been used for centuries for whistles, peashooters and simple flutes.

Gorse is trickier to work with, but its dense, slow-burning wood is prized as kindling, and the flowers can be infused to make a vivid yellow dye for wool and fabric. Cut gorse back after flowering to keep it compact and to encourage fresh growth the following spring.

For a tidy hedgerow effect, aim to trim your shrubs lightly and regularly rather than hard and rarely. This keeps the base dense, which is exactly what nesting birds want, and gives you a steady supply of usable material throughout the year.

Building Shelter and Wildlife Value Together

A well-planted coastal garden does two jobs at once. The outer line of gorse and sea buckthorn breaks the wind and filters salt, creating a calmer microclimate for everything behind it. Within that shelter you can grow elder, wild privet and other natives that support insects, feed birds and provide cover for overwintering wildlife.

Leave the berries on the shrubs through autumn and winter where you can spare them — they are a lifeline for thrushes, blackcaps and fieldfares. Allow a few stems to grow taller and thicker rather than cutting everything back, and you will soon see birds investigating the dense growth for nesting sites.

Coastal gardening asks a little patience and a willingness to work with the conditions rather than against them. Choose these tough, generous natives and you will end up with a garden that shelters itself, feeds its wildlife and gives you armfuls of material for the workshop each winter.