Cane, rattan and bamboo are three plants with different tolerances

The points below about cane and rattan are ordered by how much difference they make, not by how often they get repeated.

What each one actually is

Rattan is the stem of a climbing palm, solid throughout, which is why it can be steamed and bent into the curved frames of chairs. Cane is the hard outer skin peeled from that same stem, cut into strips and woven into the panels seen in chair backs and cupboard doors.

Bamboo is a grass with a hollow stem and distinct nodes, strong along its length and prone to splitting when worked across it. Because bamboo is hollow, it is usually cut and joined rather than bent, which is why bamboo furniture reads as straight lines and rattan as curves. Wicker is not a material at all but a weaving technique, which can be carried out in rattan, willow, reed or synthetic fibre.

Why cane panels loosen

Woven cane is tensioned when it is installed and it dries and shrinks slightly as it settles, which is normal rather than a defect. Very dry indoor air continues that shrinkage, and the weave gradually loses its spring and begins to sag under weight. The traditional response is to dampen the underside of a cane panel and let it dry, which retightens it as the fibres contract.

Room to room, repeated wetting is not helpful, because it eventually weakens the fibre and encourages mould in the joints. A cane seat that has broken strands cannot be tightened back to health and needs reweaving, which is a specialist craft still widely practised.

Sunlight and heat

Ultraviolet light breaks down the surface of all three materials, making them brittle and turning pale finishes yellow and dark ones grey. A piece sitting in a window will fail on the sunward side years before the rest, which is why one arm of a rattan chair goes first. Heat from a radiator dries the fibre, and dry fibre snaps rather than flexes under the loads it was designed for.

Rotating pieces occasionally, as with leather and textiles, evens out both the fading and the drying. Outdoor use accelerates every one of these effects, which is why natural rattan belongs under cover rather than in a garden.

Water, damp and mould

These are plant fibres and they absorb moisture, swelling when damp and shrinking as they dry, which loosens every joint over time. Left damp, they support mould, and the black spotting that appears in a woven back is fungal rather than dirt.

Underneath it, a conservatory or a bathroom presents both problems at once, high humidity and strong sun, which is a demanding place for these materials. Cleaning is best done with a barely damp cloth and thorough drying, since water sitting in the weave is what causes the damage. A piece that has been soaked can often be dried slowly back to usefulness, but drying it fast near heat will split it.

Frames, joints and repair

Rattan frames are usually bound at the joints with cane or leather strapping, and a loose binding is the most common early failure. Rebinding is a repairable job, which is one of the reasons well-made rattan furniture lasts through several decades of use.

Glued joints in bamboo furniture are harder to repair because the hollow stem gives little surface for adhesive to grip. Painting these materials seals the fibre and changes how it moves, and a thick paint film will crack along every bend. A light penetrating finish preserves flexibility while offering some protection, which suits the way the material behaves.

Anything structural belongs with a qualified professional, not an article.

Synthetic imitations

Woven polyethylene furniture imitates the look and genuinely tolerates rain and ultraviolet light far better than plant fibre. Its usual failure is the aluminium frame corroding at joints, or the weave becoming brittle after long sun exposure.

It cannot be repaired by reweaving in the way natural cane can, so damage tends to end the useful life of the piece. The distinction matters at purchase, because natural and synthetic weaves can look similar in a photograph and belong in different rooms. The simplest test is weight and smell: plant fibre is light, warm to touch and smells faintly of straw when warmed.

Everything above, in order of what to do first

1. What each one actually is. Rattan is the stem of a climbing palm, solid throughout, which is why it can be steamed and bent into the curved frames of chairs.
2. Why cane panels loosen. Woven cane is tensioned when it is installed and it dries and shrinks slightly as it settles, which is normal rather than a defect.
3. Sunlight and heat. Ultraviolet light breaks down the surface of all three materials, making them brittle and turning pale finishes yellow and dark ones grey.
4. Water, damp and mould. These are plant fibres and they absorb moisture, swelling when damp and shrinking as they dry, which loosens every joint over time.
5. Frames, joints and repair. Rattan frames are usually bound at the joints with cane or leather strapping, and a loose binding is the most common early failure.
6. Synthetic imitations. Woven polyethylene furniture imitates the look and genuinely tolerates rain and ultraviolet light far better than plant fibre.

The takeaway

Keep them out of direct sun, away from radiators and out of persistent damp, and they will outlast most of the room.

The best rooms look like a decision, not a purchase.