Winter on the Waterside: What You're Up Against

Living in a converted barn by the water brings its own rhythm to the gardening year. While you may escape the hardest frosts of inland counties, you trade that for salt spray, biting winds and ground that rarely dries out. Winter here is not a season of rest so much as a test of resilience — for your plants and for your structures. A little preparation now will save you a great deal of heartache when the first proper gale arrives. This checklist is designed for the particular challenges of a waterside garden, whether your plot sits beside an estuary, a loch or a windswept coastal inlet.

Protect Containers and Tender Plants

Containers are the most vulnerable feature of any waterside garden. Terracotta and glazed pots can crack when compost freezes and expands, while plastic pots become brittle. The simplest solution is to raise every pot onto pot feet or bricks so that water drains freely and the base is not sitting in a puddle. Group containers together in a sheltered corner — against a south-facing wall of your barn is ideal — and wrap the most precious ones in bubble wrap or horticultural fleece, secured with twine.

Salt spray is a silent killer. It coats leaves, draws moisture out of the plant and can burn new growth. On mild, rainy days, take a watering can of fresh water and rinse the foliage of evergreen shrubs and hedges, especially those nearest the water. For tender specimens such as bay, olive or rosemary, a layer of fleece over the top will keep the worst of the salt and wind off. Remember that containerised plants still need occasional water in winter — not much, but enough to stop the compost from drying out completely during a dry, cold spell.

• Raise pots on feet or stones to prevent waterlogging and frost damage.
• Wrap terracotta and glazed pots in bubble wrap or hessian for insulation.
• Move tender shrubs into a greenhouse, porch or sheltered lean-to.
• Rinse salt from evergreen leaves every fortnight during windy weather.
• Empty saucers after rain so they do not fill with frozen water.

Prune Correctly for Shape and Health

Winter pruning is a job that rewards precision. For bare-root roses, apples and pears, now is the time to remove dead, diseased or crossing branches and to open up the centre of the shrub or tree. Use sharp, clean secateurs and loppers, and cut just above an outward-facing bud. Wisteria needs its winter prune too — shorten side shoots to two or three buds — but leave the main framework alone.

Avoid pruning anything that is frost-tender until late spring. If you do prune after a hard frost and notice blackened, withered tips, resist the urge to cut them off immediately. That damaged growth actually protects the healthy wood beneath. Wait until the risk of hard frost has passed, then trim back to green tissue. For coastal gardens, also remove any branches that have been whipped and broken by wind — a clean cut heals faster than a ragged tear.

Secure Structures Before the Next Storm

Waterside winds are relentless, and a loose fence panel or flapping greenhouse door can become a missile. Walk around your garden now and check every fixing. Tighten bolts on pergolas and arches, replace rusty nails with galvanised screws, and add extra ties to climbing plants and young trees. If you have a polytunnel or cold frame, make sure the covers are taut and the anchors are firm. A simple trick is to store lightweight garden furniture, parasols and empty pots in a shed or barn — anything that can be lifted by the wind should be put away.

Don't forget drainage. Blocked gutters and downpipes can cause water to pour down walls and into borders, waterlogging roots. Clear leaves and debris from gutters, and check that ditches and French drains are flowing freely. If your barn conversion has an outside tap, lag it to prevent burst pipes. Finally, inspect trees for dead wood that could fall in a storm; if you are unsure, call a qualified arborist rather than tackling it yourself.

Soil, Drainage and the Winter Lawn

Waterside soils are often sandy and free-draining, or heavy clay that holds water like a sponge. Either way, winter is the season to improve structure. Fork over compacted borders without digging them over completely, and spread a generous mulch of well-rotted manure or compost around the base of shrubs and perennials. This protects roots from frost, suppresses weeds and feeds the soil life. If you garden on clay, add grit to planting pockets to improve drainage — but avoid walking on wet beds, as this compacts the soil further.

Lawns near the water should be kept off when frosty or waterlogged. Footprints on frozen grass can kill the blades and leave brown patches until spring. Raise the cutting height on your mower for the last cut of the year, and trim lawn edges only if the ground is firm. If salt spray has left a white crust on your lawn or borders, a gentle flush with fresh water during a mild spell will wash it away.