How to prune a pleached tree (Platanus espalier)

What is a pleached tree?

A pleached tree is not just any tree. It is an architectural statement - young branches are woven horizontally and bound until they grow into a rigid geometric form. Platanus acerifolia (London Plane) is the gold standard for pleaching because its branches are flexible, grow fast, and respond well to pruning. The result: a living, airy screen that gives privacy while letting light through.

Pleached trees grace formal gardens and line driveways. But they demand skill and patience. The first three years, branches are trained and tied. After that, you prune annually to maintain the framework.

This is not ordinary tree pruning. This is tree choreography.

Year 1-2: Training and binding

When you buy a young pleached Platanus, the branches are partly trained. Your work begins now.

Setting up the frame: In the first spring (March), inspect the existing tying system. Pleached trees are bound to a wooden or metal frame. Check that all bindings are secure. Replace damaged bindings with natural twine or floral tape - never plastic ties that cut in.

Two or three central stems grow upward. The side shoots are bound horizontally to the frame. This is the "skeleton" of your pleach.

Training new shoots: In the first two years, many wild shoots emerge. Gently bend them toward the frame and tie them off with soft bindings. Do not cut them hard - the goal is bending, not pruning. Let the tree learn to grow into the frame.

Remove only branches that truly grow chaotic or downward. Otherwise, let it grow. You are building mass.

Year 3+: Annual maintenance pruning

Once the frame is established (year 3), your pruning becomes regular. This pruning happens twice yearly.

Summer pruning (June-July): This is the roughest cut. Now you remove all shoots that:

• Grow outside the frame
• Horizontal shoots that do not fit the lattice
• Damaged or diseased branches
• Inward-growing shoots that block light

Cut well back to the horizontal lines. Your Platanus will look bare - that is good. You see the frame again.

After this cut, the tree does not grow much for two to three weeks. Then green bursts back. This new growth looks lush and young - perfect.

Autumn pruning (September-October): This is finer work. Now you remove the "fluffy" summer growth. Everything grown after July, cut back to the frame. Keep the lines sharp. All protruding shoots cut off.

After October, let the tree rest until next summer.

Platanus specific tips

Platanus acerifolia (London Plane) has advantages and pitfalls:

Advantages:

• Grows fast: new shoots 30-50 cm per year in the growing season
• Flexible wood: bends easily without snapping
• Disease resistant: far less prone to plane anthracnose than other species
• Tolerates hard pruning: recovers well from aggressive cutting

Watch out for:

• Heavy leaf drop in autumn: dead leaves accumulate in the frame. Brush them out gently.
• Fungal infections in wet years: if May-June is very wet, mildew can appear. Not serious, passes.
• Heavy branches: after 10-15 years, pleached branches become thick and heavy. Check bindings yearly.

Replacing bindings

This matters. Old bindings grow into the tree. Every two to three years, inspect and replace bindings.

How to:

• Walk carefully along the entire frame
• Cut through bindings that have grown completely in
• Retie the branch in the same spot
• Always use natural material: reed tape, jute, or specialist florist's tape
• Leave about 5 mm of growth space around the branch

Old bindings also rot. This is normal. Replace them with new ones.

Frequently asked questions

How long until a pleached tree is fully filled in?

Three to four years. Years 1-2 are training. Year 3 the lattice looks full. Year 4-5 it looks really neat with compact foliage.

Can I make a pleached tree myself or do I need young plants?

Both work. Young pleached trees (2-3 years old) cost more but have a frame already. If you start from scratch: take two to three strong young trees (1-2 years old), plant them close, and tie their shoots together on a frame. This takes longer (4-5 years) but costs less.

What if I cannot prune twice yearly?

Once a year in June also works. But your pleached tree will look a bit "wilder" - not as sharply geometric. Twice yearly gives that neat, architectural look.

Can I pleach other trees?

Yes. Beech, rowan, hornbeam - many trees pleach. But Platanus is the standard for speed and tolerance. Beech is prettier but grows slower.

How long does a pleached tree live?

Decades. A well-maintained pleached Platanus lives 40-50 years easily. Older specimens are even better - they have thick, strong branch structure.

Step-by-step

Step 1: Inspect the frame in March

Before your first pruning, check the existing frame. Replace damaged bindings. Ensure all vertical stems grow upright.

Step 2: Train new growth gently in years 1-2

Bend shoots carefully toward the frame. Tie them off with soft bindings. Do not cut hard - it is training, not pruning.

Step 3: Summer prune in June-July

Cut everything back to the frame. All branches outside the frame go. All inward-growing horizontal shoots go. Be aggressive.

Step 4: Autumn prune in September

Cut summer growth back to the frame. Keep lines sharp and neat.

Step 5: Annual upkeep

Repeat steps 3 and 4 each year. Check bindings for growing-in and replace as needed.

Pleached versus espalier

Many confuse pleached with espalier. These are two different things:

Pleached: Branches from multiple trees are woven into a lattice. Many branches, complex pattern. Used for screens and windbreaks.

Espalier: Branches from ONE tree are trained in lines (usually spiral or candelabra). Fewer branches, more sculptural. Used for fruit trees against walls.

Pleached is more "jungle training", espalier is more "sculpture". For Platanus, you choose pleached.

Discover your own garden design

At [gardenworld.app](https://gardenworld.app) you can upload your front yard and see how a pleached Platanus fits into your space. With growth projection and surrounding plantings. Plan before you buy.