Why good tools are a safety matter, not a luxury

Anyone who has wrestled a blunt pair of secateurs through a stubborn branch knows the feeling: you squeeze harder, your hand slips, and the cut ends up ragged. A ragged cut is bad for the tree, because torn bark and crushed cambium are slow to seal and give fungal spores an easy way in. It is also bad for you, because a tool that will not cut cleanly forces you to use force it was never designed for.

Good pruning kit does two jobs at once. It protects the tree by making clean, decisive cuts, and it protects you by keeping your hands and eyes away from sharp edges behaving unpredictably. Spend your money where your hand spends its time.

The cutting tools a British garden actually needs

Three tools will handle the vast majority of jobs in a domestic garden, from a small suburban plot to half an acre with a few mature standards.

• Secateurs — your everyday tool for stems up to roughly a finger's thickness. Choose bypass secateurs, where a curved blade slices past a hook, rather than anvil types that crush the stem. Look for a one-handed locking catch and replaceable blades and springs.
• Loppers — long-handled secateurs for branches up to around 3cm. They give you leverage and, crucially, extra reach, so you are not stretching into a thorny hedge or over-reaching from a ladder.
• A pruning saw — for anything thicker than your thumb. A curved, pull-stroke saw cuts fast on the pull and needs very little downward pressure, which keeps you balanced. Folding versions are safer to carry and store.

Resist the temptation to use secateurs on branches that are too big. Twisting a blade through a woody limb is one of the commonest causes of hand injuries in the garden, and it wrecks the tool as well.

Keep blades sharp, clean and dry

Sharp tools cut where you aim them. Blunt ones skid. Ten minutes of upkeep every few uses will repay you many times over.

• Sharpen the bevelled side of the blade only, following the original angle, with a fine diamond file. A few strokes is usually enough.
• Clean sap and resin off blades with a cloth and a little methylated spirit, then dry thoroughly.
• Wipe metal parts with a light oil before storing, especially over winter in a damp shed.
• Never leave tools on the lawn overnight — one damp night is enough to start rust in the pivot.

If you have been pruning a tree showing canker, dieback or silver leaf, clean and disinfect your blades before moving on to the next one. A diluted garden disinfectant is fine.

Protect yourself as well as the tree

Pruning injuries are rarely dramatic. They are usually a cut thumb from a slipped blade, a scratched eye from a whippy twig, or a thorn working its way into a knuckle. A small amount of kit removes most of that risk.

• Gloves — close-fitting, grippy and thorn-resistant. Bulky rigger gloves give you no feel for the blade; thin cotton ones give no protection at all.
• Eye protection — clear wraparound safety glasses cost very little and are the best-value item in the shed. Brambles, dead twigs and sawdust all fly.
• Ear protection — worth having if you use a powered pole pruner or chipper.
• Sturdy boots and long trousers — no shorts and sandals, however warm the afternoon.
• A first aid kit within reach, so you are not trailing a bleeding hand through the house.

Technique, posture and working at height

Most accidents happen when someone reaches just a little further than they should. Keep your shoulders relaxed, your feet planted, and both hands on the tool wherever possible. Where you need a hand to steady a branch, use a hook or a length of soft rope rather than your fingers.

For anything above shoulder height, think hard before reaching for a ladder. Domestic ladder falls are a genuine and common cause of serious injury. A pole pruner or extending lopper lets you stay on the ground, and a trained arborist is the sensible answer for anything above about three metres. If you do use a ladder, put it on firm, level ground, secure the top, and keep your hips between the stiles.

Place your cuts properly. On a branch, look for the swollen collar where it joins the trunk and cut just outside it — never flush with the trunk, and never leaving a long stub. On larger limbs, use the three-cut method: an undercut a hand's width out, a top cut slightly further out to drop the weight, then a final clean cut back at the collar.

Time your pruning with the seasons

Good timing reduces stress on the tree and risk to you. Late winter suits most deciduous trees while they are dormant and the framework is visible. Avoid cutting in spring when sap is rising, and leave leafy trees alone through summer unless you are removing dead, damaged or crossing growth.

There are exceptions worth knowing. Plums, cherries and other stone fruits are best pruned in midsummer to reduce the risk of silver leaf infection. Maples, birches and walnuts bleed heavily if cut in late winter, so wait until they are in full leaf. Evergreens generally prefer early spring, just as growth begins.

Whatever you cut, step back afterwards and look at the shape you have left. A tidy cut, a sharp blade and a decent pair of gloves are the marks of a job done properly — and the tree will thank you for it.