Caring for Woven Willow Items Indoors and Out

Why Woven Willow Changes With the Weather

Willow is a living material long after it has been cut and dried. It is hygroscopic, which simply means it takes on and gives out moisture with the air around it. A basket that feels tight and springy in a damp October can rattle a little by February, once the central heating has been running for months. Dried willow shrinks; damp willow swells. Rods move a millimetre or two across their length, which is why a well-made basket never looks quite the same two seasons running.

None of that is a fault. The point of everything below is to slow that movement down and to stop the material going brittle at one extreme or soft and mouldy at the other. Care is mostly about moisture, airflow and a little seasonal attention.

Getting the Drying Right

A newly woven basket, tray or obelisk needs to dry slowly and evenly. Rushing it is the most common way to lose a piece in its first month.

• Leave new work in a cool, airy room away from radiators, stoves and direct sun through glass.
• Turn it every few days so all sides dry at the same rate; uneven drying is what pulls a rim out of shape.
• If the willow was soaked before weaving, allow two to four weeks for thin basketry and six weeks or more for thick structural rods.
• Avoid putting fresh work straight into a shed or greenhouse, where damp air and poor ventilation encourage mould before the rods have settled.

Once a piece is properly dry and has held its shape for a fortnight, it has done most of its shrinking and will be far more forgiving.

Looking After Baskets and Trays Indoors

Indoors, dryness is the enemy. Central heating pulls moisture out of the rods until they become tinder-dry and snap rather than bend.

• Keep baskets off radiators, away from log burners and out of airing cupboards.
• A basket kept in a hot, dry loft for years will crumble at the rim. If you must store one there, wrap it loosely in a cotton sheet or old pillowcase.
• In a very dry spell, moving a favourite piece to a cooler room, or simply placing a shallow dish of water nearby, is enough to take the edge off.
• For bread baskets and fruit trays, line the base with a clean cloth so crumbs and juice do not work into the weave. Never wash these in water; wipe them out and let them air.

Garden Structures: Obelisks, Hurdles and Edging

Outdoors the problem reverses. Rain, soil contact and damp air rot willow rather than dry it out. The single most useful thing you can do is keep the base out of standing water.

• Stand obelisks and plant supports on small feet, slate pads or a gravel-filled pot so the bottom rods are never sitting in a puddle.
• Choose the right willow for the job: Salix viminalis and other vigorous sorts give long, strong rods for structures, while finer basket willows suit decorative work.
• Untreated willow in a border will usually give you four to six years; oiled or raised off the ground, it lasts noticeably longer.
• Plant supports left in place over winter should be checked in February for soft, blackened rods at soil level and any that have snapped under snow.

Some gardeners prefer to let outdoor willow weather to a silver-grey. That is entirely reasonable, so long as the structure is still doing its job.

Cleaning Without Soaking

Dust settles into the weave and, outdoors, so does moss and leaf litter.

• Dust indoors with a soft brush or a dry paintbrush, working along the weave rather than across it.
• For sticky marks, wring out a cloth in cool water with a drop of washing-up liquid, wipe gently, then dry the piece thoroughly in a warm room with good airflow.
• Never soak a basket to clean it. Soaking swells the rods and loosens the weave, and it will never quite return to shape.
• Mildew shows as a grey-white bloom. Wipe it with a cloth dampened with one part white vinegar to four parts water, then dry away from direct heat.
• Outdoors, brush structures down in spring with a stiff hand brush to remove debris and improve airflow.

Oiling and Seasonal Repairs

An occasional feed of oil keeps willow supple, deepens its colour and slows water ingress outdoors. Once a year is plenty, in spring or early autumn, and only when the piece is bone dry.

Use boiled linseed oil, tung oil or a good Danish oil. Raw linseed oil stays tacky for weeks and is best avoided. Apply thin coats with a lint-free cloth, working it into the weave, then wipe off the excess so nothing sits on the surface. Leave the piece in a cool, airy place for a day or two to cure. Skip food-contact surfaces such as the inside of a bread basket, or use a food-safe oil instead.

Repairs are easier than they look. Tuck loose rod ends back into the weave while they are still flexible. If a basket has gone brittle and you need to reshape a rim or replace a rod, soak the whole item in cool water for a few hours, or overnight for thick rods, then reshape gently and dry it slowly as you would a new piece. Willow rarely forgets how to bend; it simply needs the moisture put back.