Training Climbing Plants on a Moss Pole

Why climbers need something to hold on to

In the rainforest, a young monstera or philodendron spends its first year or two creeping across the forest floor. The moment it finds a tree trunk, everything changes. It pushes out aerial roots, grips the bark and begins to climb towards the light. As it rises, its leaves grow larger, its stems thicken and the gaps between leaves — the internodes — shorten.

In a British living room that tree trunk is missing. Without one, your plant will still grow, but it usually sprawls sideways, producing smaller leaves further and further apart along a leggy stem. A moss pole gives it something to grip, and the change can be dramatic: within a season you often see noticeably bigger leaves, deeper fenestration on a monstera, and a far more natural, upright shape.

Choosing the right pole for your plant

Most moss poles are sold as a cylinder of sphagnum moss wrapped around a rigid core. Sphagnum holds water well, which matters because aerial roots absorb moisture as well as grip. Coir poles are cheaper and look tidy, but they dry out fast and roots rarely take to them properly. For heavy climbers, a slim plank of untreated wood or a chunky moss pole will serve you better than a thin cane.

• Length: a metre is a sensible starting point. The pole should be a good 30–40cm taller than the plant so there is room to climb.
• Diameter: 5–7cm suits monstera and large philodendrons; smaller species manage with 3–4cm.
• Extendable designs are worth the extra few pounds, as you can stack a second section on top rather than start again.
• Avoid bare bamboo canes for anything with thick stems. They offer nothing to grip and can cut into soft growth.

Setting it up and training the plant

The easiest moment to install a pole is when you repot, but you can add one at any time. Push it down to the base of the pot, working it gently between roots rather than forcing it through the rootball. Position it towards the back of the plant so the aerial roots are already facing it, and the display faces you.

Now guide the stem upwards. Use soft garden twine, plant tape or reusable velcro ties, and loop them in a loose figure-of-eight around stem and pole so nothing is pinched. You should be able to slide a finger underneath. Check the ties monthly and loosen them as the stem thickens — a tight tie can strangle a plant surprisingly quickly.

Where aerial roots appear, tuck them into the moss, or pin them lightly with a plastic clip. Given a damp surface, they will grip within a few weeks and start doing the job for you. It is also worth rotating the pot a quarter turn each fortnight so the plant grows evenly rather than leaning towards the window.

Keeping the moss damp

A dry moss pole is little more than a stick. The whole point is that it stays moist, so plan for regular watering of the pole itself, not just the compost.

• Pour water slowly down the top of the pole until it runs through, ideally once or twice a week in summer.
• A clean plastic bottle with a few holes punched in the lid makes a neat, controllable watering tool.
• Stand the pot on a saucer or drip tray. Water draining from the pole will end up in the compost, so reduce your normal watering accordingly.
• Misting alone is not enough, particularly in centrally heated homes from October onwards.
• In winter, water the pole less often — every 10–14 days is usually plenty. Rainwater is better than tap if you live in a hard water area, as it leaves less chalky residue on the moss.

Common mistakes and how to avoid them

The pole is too short. If the plant reaches the top and starts flopping over, growth stalls. Add an extension or swap in a taller pole before the stem hardens.

The moss has dried out completely. Once sphagnum becomes bone dry it repels water. Soak the pole gradually over an hour or two, or take it out and submerge it, then start a regular routine again.

The pot is being flooded. If the compost stays soggy, the pole is taking too much water too fast. Water it in smaller amounts, more often, and always empty the saucer after half an hour.

Not enough light. A pole encourages larger leaves, but only where there is bright, indirect light to fuel them. Near an east or west-facing window is ideal; a dark corner will always give you small, pale growth, however good the support.

Forgetting to repot. Once roots have grown into the moss, the pole becomes part of the root system. When it is fully colonised, either move the whole thing into a larger pot, or cut the stem below the rooted section and pot that up as a fresh, well-established plant.

Which plants take to a moss pole

Monstera deliciosa and Monstera adansonii are the obvious candidates, and both respond beautifully. Heartleaf philodendrons, Philodendron 'Birkin', golden pothos, Scindapsus, Rhaphidophora tetrasperma and Syngonium all climb happily given a damp pole and decent light. Hoyas will use one as support if you are patient, though they prefer to be drier at the roots.

Succulents, ferns, snake plants, ZZ plants and most palms have no interest in climbing, and a moss pole will simply keep their compost too wet. For those, enjoy them as they are — and save the sphagnum for the plants that will reward you with bigger, glossier, properly jungle-sized leaves.