Why Roses Respond So Well to a Sharp Pair of Secateurs

A rose left unpruned will not sulk, but it will slowly lose its shape and its flower power. Within a few seasons you end up with a thicket of thin, crossing stems crowding the centre of the bush, air trapped in the middle, blackspot thriving in the damp, and blooms shrinking to the size of a two-pence piece. Pruning is simply a conversation with the plant: you tell it where you want the energy to go, and it responds with strong new shoots and better flowers.

In the UK, most roses — hybrid teas, floribundas, patio and most shrub roses — are pruned in late winter to early spring, roughly from mid-February to early March. This is when growth is just beginning, buds are beginning to swell, and hard frosts are largely behind us. The one big exception is roses that flower only once, such as many old-fashioned gallicas, albas and most rambling roses. Prune those straight after flowering in July or August, or you will cut away next year's blooms.

Know Your Rose Before You Cut

Established roses come back from pruning with surprising vigour, but newly planted bare-root roses are different. Give them a hard cut in their first late winter — down to around 15cm from the ground — to force strong shoots from the base. Container-grown roses planted in spring can be treated more gently in their first year. If you inherited a rose and are not sure what it is, watch it for one season first. A rambler will tell you by throwing long, whippy growth; a climbing rose will be stiffer and more upright.

The Four Cuts That Always Apply

Whatever the type, some cuts are non-negotiable. Work through these before you think about shaping:

• Dead wood — brittle, brown or grey, with no green under the bark. Cut back to clean, pale green wood.
• Damaged stems — snapped, cracked or wind-rocked, which let disease straight into the plant.
• Diseased growth — blackspot lesions, canker or dieback. Cut well below the affected area into healthy wood, and clean your blades afterwards with methylated spirits.
• Crossing and rubbing stems — remove the weaker of any pair, favouring growth that heads outwards.

Then open up the centre of the bush so air can move through it. Dense, congested roses are damp roses, and damp roses get blackspot. Aim for a goblet shape: an open middle with stems framing the outside.

Making the Cut Above an Outward-Facing Bud

This is the single skill that separates tidy pruning from excellent pruning. Find a bud on the stem you are cutting — the small, slightly swollen eye where a leaf joins the stem. Choose one that points away from the centre of the bush, then cut about 5mm above it, sloping the cut downwards and away from the bud so rainwater runs off the end rather than sitting on the new shoot.

Cut too far above the bud and you leave a stub that dies back. Cut too close and you damage the bud itself. Use sharp bypass secateurs — anvil types crush the stem — and keep a pruning saw for any stem thicker than your thumb. Always cut to a bud or to a strong side shoot; never leave a length of bare stem with nothing to grow from.

On climbing roses, tie the main stems in near-horizontal rather than vertical. Sap rises to the highest point of a stem, so a horizontal stem produces flowering side shoots all along its length, while a vertical one simply grows taller and flowers only at the top.

How Hard to Cut, by Rose Type

• Hybrid teas and large-flowered bush roses: cut back hard to 15–25cm above soil level, leaving three to five strong, well-spaced stems. Hard pruning gives you fewer but much larger blooms.
• Floribundas and cluster-flowered roses: be a little kinder — around 30–45cm, keeping more stems. You want quantity of flower here, not size.
• Shrub and species roses: mostly a tidy-up. Remove the oldest, woodiest third of stems from the base each year and shorten the rest lightly. This keeps the plant young without spoiling its natural shape.
• Climbers: shorten side shoots to two or three buds from the main framework, and remove one or two of the oldest main stems every few years, training a replacement in its place.
• Ramblers: after flowering, cut out the stems that have just bloomed and tie in the new long shoots for next year.

If you spot a sucker — a vigorous shoot growing from below the graft union, often with smaller or differently coloured leaves — do not cut it off at ground level. That simply encourages more. Instead, pull it away sharply from the base so the dormant buds come with it.

After Pruning: Feed, Mulch and Tidy

Pruning is the beginning of the season, not the end of the job. Clear every fallen leaf and cutting from around the base, because blackspot spores overwinter in that debris. Then give the rose a feed of balanced rose fertiliser, scatter a mulch of well-rotted manure or garden compost around it, and keep that mulch a few centimetres clear of the stems so the bark does not soften.

Water new growth in dry spells through spring. Once the first flush fades in summer, deadhead regularly, cutting back to a strong five-leaflet leaf pointing outwards — you will usually be rewarded with a second flush in late summer. Feed again in June and keep an eye out for aphids, which can be rubbed off by hand or sprayed with soapy water. Do all of that, and by July you will have roses worth stopping on the pavement for.