Pruning Coral bells
When and how — Heuchera micrantha
Prune your coral bells in March and April — the optimal month is usually April.
The next pruning window is March next year.
When to prune?
The perennial coral bells is pruned in March and April.
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 coral bells
Heuchera micrantha is evergreen and doesn't require traditional pruning, but it does benefit from a tidy-up in early spring to keep it looking its best. In March or April, before new growth begins in earnest, remove any tatty, damaged, or winter-scorched leaves by cutting them off at the base with secateurs or simply pulling them away if they come free easily. This refreshes the plant and allows light and air to reach the crown, encouraging vigorous new foliage. The delicate white flower spikes appear in late spring and early summer on slender stems that rise well above the foliage mound. Deadhead spent flower stems by cutting them back to the base once flowering finishes; this keeps the plant tidy and prevents energy being wasted on seed production, though it won't trigger a second flush of flowers. Use clean, sharp secateurs to avoid bruising the stems. Over time—typically after three to five years—heuchera crowns can become woody and start to lift out of the soil, with the older central portion dying back. When you notice this happening during your spring tidy, lift the entire clump, divide it into healthy sections with roots attached, discard the woody centre, and replant the vigorous outer portions at the correct depth. This rejuvenates the plant and is best done in March or April. No other pruning is necessary, making this an exceptionally low-maintenance perennial for shaded spots.
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.
Combine with feeding
In March and April you can combine pruning with feeding — efficient, and you only disturb the plant once. Read the full care guide for coral bells →
Too late this year? Here's what to do
Better to wait than prune at the wrong moment. The next optimal window is March next year. Until then: leave the plant alone — only remove dead or diseased wood (which you can do year-round).
