Autumn pruning guide: What to do (and when) 

As the days shorten and leaves begin to fall, it’s time to think about autumn pruning. But not all plants need the same care. In fact, pruning the wrong way—or at the wrong time—can reduce next years blooms or harm plant health.

This guide walks you through exactly what to prune this autumn, and when, for the specific plant types we offer.

Want expert gardening tools to go with your seasonal pruning? Browse our tools collection.

Flowering Perennials (e.g. Astrantia, Salvia, Gaura)

• What to prune: Cut back faded flower stalks, remove dead or diseased stems, tidy overall shape lightly.
• When & how: Late summer to early autumn. Prune just above healthy leaves or basal growth. Leave foliage to protect roots.

Ornamental Grasses (e.g. Mexican Feather Grass)

• What to prune: Trim dead foliage. Don’t cut all the way down—leave structure for winter interest.
• When & how: Late autumn to early winter. Cut to a few inches above ground before hard frost.

Ferns (e.g. Autumn Fern)

• What to prune: Remove brown/dead fronds. Leave semi-green ones for protection.
• When & how: After early frost. Trim dead parts only. Full pruning best saved for early spring.

Evergreens, Climbers, Roses & Herbs

• What to prune: Light trims only. Remove dead, damaged, or crossing branches. Don’t prune roses heavily until late winter.
• When & how: Mid-autumn before frost. Trim hardy herbs lightly, protect tender ones.

Autumn Pruning Mistakes to Avoid

• Don't prune flowering shrubs that bloom on old wood in autumn — you’ll lose next season’s flowers.
• Avoid hard pruning of evergreens — late growth may not survive winter.
• Don’t remove all grass or fern foliage too early — it protects the plant crown and adds winter beauty.

Final Thoughts

Autumn pruning isn’t one-size-fits-all. Some plants love a tidy-up, others need to be left alone until spring. Follow these simple guidelines and you’ll protect your garden — and set it up for a brilliant bloom next year.

Ready to get started? Shop our autumn-ready plants and make this season your garden’s best yet.