Keeping Cedar Furniture Looking Good Outdoors

Why Cedar Earns Its Place in the British Garden

Cedar has been the wood of choice for garden benches, planters and outdoor tables in Britain for centuries, and for good reason. It is naturally resistant to rot, remarkably light for its strength, and it holds its shape through the sort of weather that would reduce lesser timbers to splinters. A well-made cedar bench, looked after with a little patience, will comfortably outlast the person who bought it.

What surprises many new owners is the way it changes. Left to its own devices, cedar does not merely fade — it transforms. The warm honey tones of fresh timber give way to a soft silver-grey patina that many gardeners actively prize. Whether you prefer that weathered look or the richer colour of new wood is entirely a matter of taste. Both are perfectly respectable, but they demand different approaches, and knowing which you want is the first practical decision you will make.

Choosing Your Approach: Silver or Honey

If you admire the silvery finish, your job is largely one of restraint. Left untreated, cedar will reach that patina naturally over a season or two, and the surface will remain sound for decades. You will still need to clean it, because algae, bird droppings and general garden grime will settle in the grain and turn that elegant silver into something closer to a dull green. A gentle wash once or twice a year is enough.

If, on the other hand, you want to keep the warm reddish-brown colour, you will need to intervene. Untreated cedar cannot be persuaded to stay honey-coloured by cleaning alone. The colour comes from natural oils in the wood, and those oils are gradually broken down by ultraviolet light and rain. Replenishing them with a purpose-made cedar oil is the only reliable way to hold the colour, and it means committing to a routine of perhaps two treatments a year.

Cleaning Without Doing Harm

Before any oil goes near the wood, the surface must be clean and, crucially, dry. Oiling over dirt simply seals the grime in.

• Begin with a stiff-bristled brush — a hand brush is usually enough — to lift loose dust, cobwebs and debris from joints and corners.
• Mix a small amount of mild washing-up liquid into a bucket of warm water. Avoid anything abrasive, and steer clear of bleach-based cleaners, which will strip the natural oils and leave the surface patchy.
• Work the suds into the grain with a soft cloth or sponge, following the direction of the wood rather than scrubbing across it.
• Rinse thoroughly with clean water. Soap residue left behind will interfere with any oil you later apply.
• Allow the furniture to dry completely, ideally over a full day of dry weather. Damp wood will not absorb oil evenly.

For stubborn green algae or black spots, a dedicated wood cleaner formulated for garden furniture is a reasonable investment. Apply it sparingly, leave it for the time stated on the container, and rinse well. Do not be tempted to reach for a pressure washer. Cedar is a softwood, and a high-pressure jet will raise the grain, erode the softer bands between growth rings, and leave you with a permanently fuzzy surface that no amount of oil will smooth.

Reviving the Colour with Cedar Oil

Oiling is not varnishing. You are not building a film on the surface; you are feeding the timber, replacing the natural oils that weather has taken away. Choose a product described as cedar oil or a clear timber oil suitable for garden furniture, and read the label rather than assuming.

Apply on a dry, mild day, ideally in the morning so the wood has hours of gentle warmth to draw the oil in. Use a lint-free cloth or a broad brush, working with the grain and covering a manageable area at a time. Let the first coat sit for twenty minutes or so, then wipe away anything the wood has not absorbed. Excess oil left on the surface will turn tacky and attract dust, so do not skip this step. A second thin coat, applied the following day, will deepen and prolong the result.

Expect to repeat this two or three times a year in exposed positions, and once a year for furniture under a pergola or against a sheltered wall. The timber will tell you when it is thirsty: the colour will begin to pale, and water will stop beading on the surface.

Protecting Joints, Feet and Hardware

Rot in outdoor furniture almost always starts out of sight. Water collects in the end grain of legs, in mortise-and-tenon joints, and in the recesses around bolts and screws. When you oil the visible surfaces, take an extra minute to work oil into the feet and any exposed end grain, where absorption is fastest.

Standing furniture directly on damp paving or soil is asking for trouble. Set legs on small feet, slats or a paved apron so air can circulate beneath them. Check bolts and fixings once a season and tighten them; loose joints admit water. If the furniture spends winter outdoors, a breathable cover is worthwhile, but only if it is genuinely breathable — a non-porous cover will trap condensation and do more harm than leaving the piece uncovered.

A Rhythm That Fits the Seasons

The simplest routine is to make cedar care part of the gardening year rather than a separate chore. In spring, clean and oil everything ahead of the season. In late summer, after the worst of the dry weather, give exposed pieces a light refresh. Before winter, tighten fixings, raise the feet off the ground, and cover or store anything precious.

Done this way, the work is modest — perhaps an hour or two a year — and the reward is furniture that looks cared for, whether you favour silver or honey. Cedar asks little of you. Give it that little, consistently, and it will serve the garden for a generation.