Three Timbers, One Patio: Telling Teak, Acacia and Robinia Apart Before You Pay

Walk into a garden centre this autumn and you will see three words doing an awful lot of heavy lifting: teak, acacia and robinia. They are often lined up within a few metres of each other, sometimes with near-identical honey-brown finishes, and the price tags can differ by hundreds of pounds. That is the moment most of us quietly wonder whether we are being sold a wood or a story.

The honest answer is that all three can make good garden furniture, but they are not interchangeable. The label matters less than the species, the grade, the joinery and your willingness to look after the thing. Here is how to read the differences without needing a botany degree.

Start with what the label does not tell you

Teak is a specific species. Acacia is a broad group of woods, and quality varies enormously. Robinia is usually Robinia pseudoacacia, often called false acacia, and it is a different timber altogether. Some retailers use acacia as a catch-all name, while others slap a teak-style finish on a cheaper wood and let the colour do the talking.

Before you fall for a finish, ask for the botanical name and the origin. Check whether the timber is FSC-certified or similarly verified. If a piece is described as teak-finish, teak-look or golden teak, assume it is not teak until proven otherwise. A good retailer will not mind the question. A vague one will.

Teak: the benchmark, not a magic trick

Teak, or Tectona grandis, earns its reputation. It has a tight grain, a naturally oily character and a remarkable ability to sit outdoors in wet, variable weather without falling apart. Left alone, it weathers to a soft silver-grey that suits British gardens rather well. Oiled regularly, it keeps a warmer honey tone.

What you are paying for is stability and low fuss, not indestructibility. Plantation teak is the norm now, and the best pieces are still costly because the wood is dense, slower-grown and carefully dried. A cheap teak bench with thin sections and poor joints is not a bargain; it is an expensive lesson.

In a British winter, teak copes better than most timbers, but it still wants air and drainage. Do not wrap it in a non-breathable cover and leave it sitting in a puddle. If you like the grey look, maintenance is genuinely minimal: a clean in spring and perhaps a gentle wash before winter. If you want the honey colour, you will need to oil it annually, and possibly twice a year on an exposed patio.

Acacia: broad church, wide price range

Acacia is fast-growing, widely plantation-grown and often very attractive. It can have a lively, striped grain and a golden colour that looks lovely in showroom light. It is also the timber most likely to be sold under a slightly flattering description.

There is good acacia furniture and there is thin, rattly acacia furniture. The good stuff can last well, especially if you choose heavier sections and proper joinery. The cheaper end often uses slim slats, light frames and finishes that flatter the wood but do not protect it for long. Acacia is generally less naturally oily than teak, so it tends to need more help through wet winters. Left untreated, it can grey, develop surface mould or go a little fuzzy in damp conditions.

That does not make it a bad choice. It makes it a choice for someone who is happy to oil, clean and keep an eye on it. If you want a generous patio set without a teak budget and you do not mind a bit of seasonal fussing, acacia can be excellent value. If you want to do nothing and still have it look smart in five years, be cautious.

Robinia: the tough middle child

Robinia is the timber that often gets overlooked because it lacks teak's brand recognition. It is dense, hard and naturally resistant to rot, which makes it a sensible option for exposed British gardens. It is usually paler than acacia, with a straighter grain and a slightly olive or greenish-yellow tone when new. It weathers to grey much like teak.

It is not as refined as teak. You may see more small checks or splits at the ends of boards as it dries, and the grain is less silky. But for structure and staying power, robinia often delivers a lot per pound. It sits in the middle ground on price and generally needs less oiling than acacia, though it is not maintenance-free.

If your patio is windy, damp and fully exposed, robinia deserves a serious look. It is also a good pick if you like the weathered grey look but cannot justify teak money.

Showroom detective work: five checks

First, look at the end grain. Teak tends to be fine and even. Acacia can look more open and porous. Robinia is dense and tight. You will not always get a clear view, but it helps.

Second, lift the piece. Density is a useful clue, though design matters too. A heavy chair is not automatically better, but a surprisingly light hardwood frame with thin legs deserves a second look.

Third, study the grain and colour. Teak is usually fine and subtle. Acacia often has a bolder, striped grain. Robinia is straighter and more restrained. A uniform orange-brown stain tells you very little about the wood underneath.

Fourth, check the joints and fixings. Stainless steel or galvanised fittings are a good sign outdoors. Look for tight joints, smooth sanding and feet that will not drink water. Good timber cannot rescue bad joinery.

Fifth, read the warranty and ask what it actually covers. A long warranty on a frame is reassuring; a short one on a heavily stained acacia set tells you something too.

How they cope with a British winter

All timber furniture wants the same things: drainage, airflow and a bit of attention before the wet months. Raise legs out of standing water where possible. Clear debris from slats. Store cushions indoors. Avoid airtight covers that trap condensation; a breathable cover or a simple open-sided shelter is usually better. Never seal a wet piece of timber.

Teak handles wet and cold best, but it can still grow surface mould in a damp, shaded corner. Acacia is the most variable: good pieces do fine, but cheaper ones can blacken or roughen if left wet for weeks. Robinia is robust, though end grain can check as it dries. None of them enjoy being pressed against a wet wall or buried under soggy leaves.

For winter 2026/27, the practical routine is simple: clean, dry, raise, cover loosely and check monthly. If you would not leave a wooden chopping board outside in the rain, do not leave a timber table sitting in a puddle either.

What the price difference actually buys

Teak buys you lower maintenance, greater stability and a longer useful life when the piece is well made. It does not buy you immortality, and it does not make a poorly designed bench a good one.

Acacia buys you the look for less, but often with more upkeep and more variation in quality. Spend your money on the heaviest, best-jointed frame you can find rather than the fanciest finish.

Robinia buys you toughness and a sensible middle price. It may not have teak's polish, but it often has the durability that a real British patio needs.

The worst outcome is paying teak prices for acacia. The second worst is buying a cheap hardwood set and expecting it to behave like teak. Match the timber to your actual commitment, not the version of yourself who plans to oil the furniture every sunny Sunday.

A quick way to choose

If you want a weathered grey finish and minimal fuss, look at teak or robinia. If you want a honey tone and will genuinely oil it, acacia can work well. If your garden is exposed, windy and wet, prioritise density and joinery over a pretty finish. If the budget is tight, inspect acacia carefully and compare it with powder-coated metal before committing. And if you are buying a small patio set, remember that stacking and folding matter as much as the wood itself.

Teak, acacia and robinia are all capable of earning their place. The trick is knowing which one you are actually buying, and whether you are ready for the relationship it requires.