March is a pivotal month for pruning in UK gardens. With winter’s harshest weather passing and new growth about to emerge, the right pruning now encourages vigorous growth, improves flowering and maintains plant structure. Timing is key-  prune too early and late frosts can damage shoots, too late and you may miss the optimal growth window.

Why Prune in March?

Winter pruning is mostly complete by February, but March allows for finishing touches, shaping, and preparation before spring growth accelerates. Proper pruning improves airflow, removes damaged wood, and helps control size and shape.

Pruning Roses

Bush Roses

• Cut back to healthy, outward-facing buds
• Remove dead, diseased or crossing stems
• Reduce height for compact growth

Climbing Roses

• Tie new shoots to supports
• Remove weak or dead stems
• Delay heavy pruning until after flowering for spring-flowering varieties

Tip: Avoid cutting flower buds off early-blooming climbers.

Pruning Shrubs

Deciduous Shrubs

• Remove old, woody stems to encourage fresh growth
• Thin crowded branches to improve light and airflow
• Leave spring-flowering shrubs (forsythia, lilac) until after bloom

Evergreen Shrubs

• Lightly trim to maintain shape
• Avoid heavy pruning during cold snaps
• Check for frost-damaged shoots and remove if necessary

Pruning Climbers

• Wisteria – Finish winter pruning of long shoots to 2–3 buds
• Clematis – Group 2: light pruning; Group 3: cut back hard for summer flowering
• Other climbers – remove weak or tangled growth, tie healthy stems to supports

Pruning Tools & Techniques

• Use sharp, clean secateurs for precise cuts
• Disinfect between plants to prevent disease spread
• Cut above outward-facing buds at a slight angle
• Do not prune during heavy frost

Timing & Frost Considerations

• Prune after the coldest part of winter but before active growth starts
• Protect tender shoots from late frosts with fleece if necessary
• Check local weather forecasts for frost warnings

Pruning in March is all about timing and technique. By carefully trimming roses, climbers and shrubs now, you’ll promote healthy growth, improve flowering, and protect plants from late frost damage — giving your garden a strong start to spring.