Pruning Strawberry
When and how — Fragaria × ananassa
Prune your strawberry in June and July — the optimal month is usually July.
The next pruning window is June.
When to prune?
The perennial strawberry is pruned in June and July.
With perennials, pruning is really seasonal management.
You don't prune perennials the way you prune shrubs. The work happens at three moments: (1) deadheading spent flower stems during the season to encourage repeat bloom, (2) optionally cutting back to about 10–15 cm above ground in late autumn, and (3) clearing all the old foliage in March before the new shoots emerge. Many gardeners now deliberately leave the old growth standing through winter — it protects the crown and shelters overwintering insects. Which approach to choose depends on taste and species: evergreen perennials (hellebore, bergenia) look better left alone, while wet-rotting species (hosta) need to come down after the first frost.
How to prune strawberry
Strawberries don't require traditional pruning, but they do need regular tidying to maintain vigour and prevent disease. The main task comes in June and July, immediately after the last fruit has been picked. Cut back old, tatty foliage to about 10 cm above the crown using clean, sharp secateurs or shears. This removes leaves that may harbour pests and diseases, and encourages fresh, healthy growth for the following season. Be careful not to damage the crown itself or any new leaves emerging from the centre. Throughout the growing season, remove any runners—long stems with baby plantlets—unless you want to propagate new plants. Runners divert energy away from fruit production, so snip them off close to the parent plant as soon as you spot them. If you do want to propagate, peg down one or two strong runners per plant into small pots of compost in July, then sever them from the parent once rooted in late summer. After three or four years, strawberry plants become less productive and more prone to virus. Rather than pruning harder, it's better to replace them with fresh, certified virus-free stock. Dig up and compost old plants in autumn, and replant a new bed in a different spot to avoid soil-borne diseases. Remove any diseased, damaged, or mouldy fruit promptly throughout the season to prevent spread. Deadheading spent flowers isn't necessary unless fruit has failed to set, in which case nip them off to keep plants tidy.
Common mistakes
✗ Cutting back too early in spring
Late frost can still strike and the old foliage protects the crown. Wait until the first new shoots are visible (usually mid-March) — then you know the season has actually started.
✗ Skipping deadheading
Hardy geranium, salvia, lupin and delphinium will give a second flush if you cut spent stems back to just above a pair of healthy leaves as soon as the first flowers fade.
✗ Cutting ornamental grasses down in autumn
The dry stems are the whole point of winter interest, AND they protect the crown from frost and waterlogging. Cut down to a fist's height only in late February.
Hold off on pruning
Better to wait than prune at the wrong moment. The next optimal window is June. Until then: leave the plant alone — only remove dead or diseased wood (which you can do year-round).
