Why Autumn and Winter Suit Bare-Root Trees Best

There is a satisfying rhythm to planting trees in the dormant season. From late October through to March, nurseries lift bare-root stock while the sap is down, and those young trees travel to your garden with their roots naked of soil but full of promise. Because they are not fighting to keep leaves alive, they settle into their new home with far less stress than a potted tree planted in high summer.

But the season rewards a little preparation. Before you place an order for winter delivery, it pays to walk your proposed planting spots with a critical eye. The checklist below covers the four things that most often decide whether a new tree romps away or sulks for a year: soil moisture, root quality, stake height and protection from rabbits and other nibblers.

Assess Soil Moisture Before You Dig

Autumn rain is a gift, but it can also hide a problem. A site that holds water through winter will drown the roots of most garden trees, while a sandy, free-draining border may be bone dry just a spade's depth down even after a wet week. Test before you commit.

• Squeeze test: Take a handful of soil from planting depth and squeeze. If it forms a ball that holds together but crumbles when poked, moisture is about right. If water dribbles out, you have a drainage problem.
• Dig a test hole: A hole roughly the size of the rootball, left overnight, tells you plenty. Standing water in the morning means you need to plant on a slight mound or choose a thirstier species such as willow or alder.
• Check the water table: In heavy clay, winter water can rise to within 30cm of the surface. If that describes your garden, consider raising the planting area or opting for a tree that tolerates wet feet, like a hornbeam or a crack willow.
• Water in: Even in November, a newly planted bare-root tree needs a good soak at planting time to settle the soil around the roots. Do not rely on rain alone.

Get the moisture question right and you have solved the single biggest cause of first-year failure. Everything else is easier.

Judging Root Quality When Your Tree Arrives

The roots are the whole point of buying bare-root. A healthy young tree should arrive with a well-branched, fibrous root system, ideally with plenty of fine feeder roots still damp and pliable. If the roots look shrivelled, blackened or snapped off short, that is a problem worth raising with the nursery immediately.

• Look for a balanced spread: Roots should radiate roughly evenly, not crammed to one side. Aim for a root spread at least as wide as the branch spread above.
• Check for freshness: Healthy roots are firm and pale to mid-brown. Slimy, sour-smelling or mouldy roots have been stored too wet or too long.
• Inspect the graft: On grafted trees, the union should be clean and well healed. Plant with the union 5–10cm above soil level so it does not rot.
• Keep them damp: If you cannot plant straight away, heel the roots into a spare patch of soil or a bucket of damp compost and keep them cool. Never let bare roots dry out in a shed or garage.

Prune back any damaged root ends cleanly with sharp secateurs before planting, and soak the roots for an hour or two in a bucket of water if they have travelled far.

Getting Stake Height and Angle Right

Staking is often done badly, and a badly staked tree grows weaker, not stronger. The aim is to hold the rootball steady while the trunk is allowed to flex slightly in the wind. That flexing builds the trunk's own strength. Over-staking, or staking too high, defeats the purpose.

• Height: Aim for a stake that reaches roughly one third of the tree's final clear trunk height, usually around 60–90cm above ground for a standard bare-root whip. Taller stakes encourage a floppy trunk.
• Position: Drive the stake in before planting, on the prevailing windward side, so the tree is not blown onto it. That means west or south-west for most of the UK.
• Ties: Use a proper tree tie with a buffer, and check it each spring. A tie that bites into the bark will girdle and kill the tree.
• Remove in time: For most garden trees, plan to remove the stake after two or three growing seasons, once the roots have anchored properly.

Protecting Against Rabbits and Other Wildlife

Rabbits, hares and deer can strip the bark from a young tree in a single night, and voles will gnaw roots below ground. If you garden near open countryside, fields or woodland edges, assume you will have visitors.

• Spiral guards: Clear plastic spiral guards wrapped around the trunk protect against rabbit damage and help prevent strimmer knocks. Push them gently into the soil so they do not rub.
• Mesh fencing: Where deer are present, a ring of wire mesh at least 1.2m high is the only reliable defence. Make it wide enough that animals cannot reach over to browse the leader.
• Underground guards: If voles are a nuisance, line the planting hole with a fine mesh basket before backfilling.
• Mulch, but not too close: A mulch of well-rotted bark or leafmould suppresses weeds and holds moisture. Keep it a hand's width clear of the trunk to avoid rotting the bark.

A little thought now, while the ground is still workable and the catalogues are open, will pay you back many times over. Choose the right spot, check your soil, plant with care and guard against the nibblers, and your new trees will reward you for decades.