Why hanging baskets earn their place in a coastal garden

Coastal gardens ask a lot of their plants. Salt spray scours leaves, wind sucks moisture out of everything, and the soil is often thin, sandy and quick to drain. A hanging basket lets you sidestep most of that. Raising plants a metre or more off the ground lifts them clear of the worst of the wind-blown grit and salt, and out of reach of the slugs and snails that patrol a damp border. On a small plot, a balcony or a bare wall by the sea, baskets also give you somewhere to grow that simply would not exist otherwise.

The trade-off is that a basket is a tiny, exposed root run with air moving all around it. Get the lining, compost and watering right, though, and you can grow a genuinely wildlife-friendly display from late spring until the first frosts.

Lining and filling: getting the foundation right

Start with the lining. Traditional moss is hard to beat: it holds water, breathes well and looks handsome as it knits together. Sphagnum moss should come from a sustainable, garden-grown source, but you can also gather moss from your own lawn edges, patio cracks or a shaded path. If you would rather not use moss, recycled fabric works beautifully — an old cotton sheet, a worn woollen jumper, hessian sacking or a piece of old curtain lining, cut and pressed into the basket. Avoid plastic sheeting, which traps water and turns the compost sour.

For compost, use a good peat-free multipurpose mix. Peat-free blends dry out a little faster than old-style peat, so improve water retention by stirring through a couple of generous handfuls of garden compost or leafmould, plus a handful of horticultural grit or sharp sand to keep drainage open. Add a slow-release organic fertiliser and, if you can get it, a spoonful of seaweed meal, which suits coastal plants and supplies trace elements.

A basket of around 35–40cm across takes roughly 20–25 litres of compost. Smaller baskets look charming but dry out alarmingly fast in a sea breeze, so buy the biggest you can hang safely, and check your bracket and wall fixing can take the weight once it is soaked.

Trailing plants worth growing

Aim for a mix: trailing plants to soften the edges, a few upright or mounding ones for the middle, and flowers that open over a long season rather than all at once.

• Ivy (Hedera helix) — our native ivy is the single best plant for a coastal wildlife basket. Evergreen, salt-tolerant, and its autumn flowers are a lifeline for ivy bees, hoverflies and red admirals when little else is open. Trailing varieties tumble beautifully over the rim.
• Trailing nasturtium — not a British native, but a wonderful wildlife plant all the same. The leaves feed cabbage white caterpillars, the flowers give bees and hoverflies an easy landing, and both are edible for you.
• Trailing fuchsia — hardy forms such as Fuchsia magellanica carry long, tubular flowers that bees work from below. They flower generously right through summer and into autumn in a sheltered spot.
• Wild strawberry (Fragaria vesca) — a native that runs and trails naturally. Small white flowers in spring, tiny sweet fruits in summer, and birds and small mammals will tidy up whatever you leave.
• Selfheal (Prunella vulgaris) — a low, native, nectar-rich plant that knits around the rim and flowers for months with minimal fuss.
• Sea thrift (Armeria maritima) — a true coastal native, perfectly happy with salt and wind, producing pink pom-poms in late spring that bees adore.
• Ivy-leaved toadflax — long naturalised in Britain, endlessly trailing, and covered in tiny snapdragon-like flowers that small bees visit.

Planting up and the first fortnight

Plant in late May or early June, once the risk of frost has passed — coastal gardens can be a fortnight behind inland ones, so trust your own last-frost date rather than the calendar. Fill the basket to about two-thirds, then set the plants in with their rootballs angled outward. Trailers go near the edge, uprights in the centre. Firm each one in gently, top up with compost to about 2cm below the rim, and water until it runs out of the bottom.

Keep the new basket somewhere shaded and out of the wind for a week to ten days so the roots can establish, then move it to its final position. Remember that a coastal wind can topple even a well-fixed bracket, so hang baskets where a wall or fence gives some shelter from the prevailing direction.

Watering, feeding and summer care

In warm weather, water daily — and on hot, breezy days, check again in the evening and water a second time if the compost feels dry an inch down. The dunking method is the most thorough: lift the basket down, lower it into a bucket of water until it stops bubbling, let it drain, then rehang it. Water in the morning where you can, and avoid soaking the flowers late in the day.

Feed weekly with a liquid seaweed or comfrey feed, switching to a tomato-type feed once flowering begins. Deadhead regularly, trim back any straggly growth to keep the shape full, and tuck fresh moss or fabric over the surface if the compost starts to show. By August, a tired basket can be revived with a light trim and a good feed.

A basket that earns its keep for wildlife

Choose single, open flowers rather than tightly double ones — bees and hoverflies need to reach the nectar. Leave the ivy to flower and set seed rather than cutting it back, and let a few nasturtium seeds drop and overwinter in the basket. Skip pesticides entirely, keep the compost peat-free, and place a shallow dish of water at ground level nearby so insects have somewhere to drink. Group two or three baskets together and you create a small, connected habitat, carrying bees and butterflies well into autumn in even the breeziest seaside garden.