Pruning Bee Blossom
When and how — Gaura lindheimeri
Prune your bee Blossom in March — the optimal month is usually March.
The next pruning window is March next year.

When to prune?
The perennial bee Blossom is pruned in March.
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 bee Blossom
Gaura requires minimal pruning, but a single hard cut-back in March will keep plants tidy, encourage bushier growth, and prolong their lifespan. In late winter or early spring—ideally in March before new growth begins—cut back all the previous year's stems to within 5–10 cm of the ground. Use clean, sharp secateurs or hand shears for this task. This hard prune removes old, woody growth and stimulates fresh basal shoots that will carry the summer and autumn flowers. If you delay pruning until growth has started, you'll sacrifice some of the plant's energy, so aim to complete the job before mid-April. Don't be tempted to tidy up in autumn; the old stems provide some winter protection for the crown, and gaura can be borderline hardy in colder parts of zone 7, so leaving top growth intact until spring improves winter survival. During the growing season, deadheading is not strictly necessary—gaura produces such a profusion of small flowers on wiry stems that removing spent blooms individually is impractical. However, if the plant begins to look untidy or flowering slows in midsummer, you can shear back the flowered stems by about one-third. This encourages a fresh flush of blooms and prevents the plant from becoming too leggy or sprawling. In very mild winters, gaura may retain some semi-evergreen foliage. If this occurs, simply cut it back in March along with the old stems. Avoid autumn pruning, as this can stimulate soft new growth vulnerable to frost damage.
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.
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).