Pruning Solomon's seal
When and how — Polygonatum × hybridum
Prune your solomon's seal in November — the optimal month is usually November.
The next pruning window is November.

When to prune?
The perennial solomon's seal is pruned in November.
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 solomon's seal
Solomon's seal requires very little pruning in the traditional sense. The plant dies back naturally in autumn, and the main task is tidying up the old foliage rather than shaping or controlling growth. In November, once the leaves have turned yellow and begun to collapse, cut the stems down to ground level using secateurs or garden shears. Removing this spent growth keeps the border tidy and reduces the risk of pests and diseases overwintering in dead plant material. If you prefer a more naturalistic look, you can leave the stems standing until late winter, but they become tatty and slimy as they decompose, so most gardeners prefer to clear them in November. There's no need to cut back earlier in autumn—allow the foliage to die back fully so the rhizomes can reabsorb nutrients before winter dormancy. Throughout the growing season, no pruning is needed. The graceful arching stems should be left intact; cutting them back while green will weaken the plant and spoil its elegant form. If individual stems are damaged by wind, pests, or accidental breakage, you can remove them at the base, but this is rarely necessary. Deadheading the small white bell-shaped flowers that appear in late spring and early summer is not required. The flowers are followed by blue-black berries in late summer, which add ornamental interest and are enjoyed by birds, so leave them in place unless you're concerned about self-seeding (which is minimal with this hybrid). Focus your November tidy-up on removing all the old stems cleanly at soil level, and your Solomon's seal will re-emerge reliably each spring.
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 November. Until then: leave the plant alone — only remove dead or diseased wood (which you can do year-round).