Propagate herbaceous perennials
Divide clumps of herbaceous perennials that you want to propagate, those that have become too large or are flowering poorly.
Cut back summer-flowering jasmine
Summer-flowering jasmines may also be pruned (if necessary), providing that they are reasonably hardy where they are. Remove a couple of stems completely to ground level, and avoid cutting back laterals, as this would damage this year’s flowering potential.
Guard against slug and snail damage
Protect lily, Delphinium and Hosta shoots from slugs and snails before they appear.
Prune selected shrubs
Cut back hard shrubs such as Buddleja davidii, Salix alba var. Vitellina cultivars and Cornus sanguinea to keep them manageable and deepening the stem colour for next winter.
Trim back late-flowering Clematis
Cut back late summer and autumn flowering (Group 3) Clematis to the lowest pair of strong buds. Mulch and feed at the same time.