How to Plant a Larch Tree: A Step-by-Step Guide for UK Gardens and Small Woods
Larch is the conifer that behaves like a broadleaf. Its soft needles turn butter-yellow in late autumn before dropping, and in April it leafs up again with a fresh green no spruce can match. It grows fast, stands up to wind, and makes excellent timber. Plant one well and you have a tree that earns its space within a decade.
Plant one badly, though, in shade, in waterlogged clay, or with its roots crammed into a hole that was too small, and you will spend years watching it sulk. Larch is forgiving if you get the basics right at the start. Here is how to do that, whether you are putting in a single specimen at the end of a garden or a few hundred trees in a paddock.
Choosing the right larch for your site
Three larches are widely available in the UK, and they are not interchangeable.
- European larch (Larix decidua) — the traditional choice. Fine needles, upright habit, superb autumn colour. It prefers cooler, moister sites and does well on upland ground and heavier soils that still drain freely.
- Japanese larch (Larix kaempferi) — faster growing, broader blue-green needles, and more tolerant of poorer, drier soils. Widely planted for timber and shelter.
- Hybrid larch (Larix × eurolepis) — a cross between the two, vigorous with good straight form. Often the best pick for a small wood where timber matters.
All three want the same things: full light, free-draining soil and room. None will thank you for heavy, waterlogged clay or deep shade.
One caveat before you order anything. Larch is a host for Phytophthora ramorum, the disease behind widespread felling in parts of Wales, south-west England, Scotland and Northern Ireland, and planting is restricted or discouraged in some areas. Check the current guidance from your country's forestry authority — the Forestry Commission, Scottish Forestry, Natural Resources Wales or DAERA — before you buy.
Preparing the site
Larch is a pioneer tree. In nature it colonises open ground, which tells you most of what you need to know: it wants light, air movement and little competition while it is young.
Start by clearing a circle roughly a metre across for each tree. Grass, bracken and brambles are the main reason young larch fail, because they take the water and nutrients long before the roots can reach them. Strim, mow or smother the patch with a mulch mat, and do it a few weeks before planting if you can.
Check drainage next. Dig a spade-deep hole, fill it with water and see how long it takes to disappear. If it is still full the next morning, plant somewhere else or plant on a low mound of improved soil. Test the pH with a cheap kit if you are unsure: larch is happiest on slightly acid to neutral ground and struggles on shallow chalk.
Leave plenty of space. Larch can reach 20 to 30 metres, so keep it well clear of buildings, drains, overhead lines and boundaries. In a garden, site a specimen where its bare winter skeleton will still look good.
Bare-root, cell-grown or potted?
For most planting, bare-root is the sensible choice. It is cheaper, the choice of sizes is wider, and trees lifted and replanted while dormant establish quickly. Bare-root larch is available from November to March, so plant as early in that window as the ground allows.
The rule that matters most with bare-root stock is that the roots must never dry out. Keep them wrapped in damp hessian or a plastic bag, out of sun and wind, and plant within a few days. If you cannot, heel them in: dig a shallow trench, lay the trees at an angle, and cover the roots with soil.
Cell-grown and potted trees cost more but suit small numbers and awkward timing. They can be planted outside the dormant season provided you water them properly through the first summer. If a potted tree has roots circling the inside of the pot, tease them out before planting.
In a garden, a 60 to 90cm bare-root whip will often overtake a larger, more expensive tree within three or four years. Bigger is not automatically better.
Planting, step by step
- Mark the spot and clear a metre-wide circle of weeds and grass.
- For small bare-root trees on grass, make a notch: push a spade in vertically, lever it forward, slip the roots into the gap, then firm the soil back with your heel. For larger or potted trees, dig a hole wide enough to take the roots spread out.
- Set the tree at the same depth it grew before. Look for the soil mark on the stem; the root collar should sit level with the ground, never buried.
- Backfill in layers, firming gently as you go. You are closing air pockets, not compacting the soil.
- Water well, even in winter if the soil is dry.
- Mulch with 5 to 8cm of bark chip or compost, keeping it clear of the trunk.
- Fit a spiral guard against rabbits, and a shelter or mesh where deer are a problem. Stake only if the tree is tall or the site exposed, and remove the stake after two or three years.