At the end of the summer flowering, the plants look tired and straggly. Using a sharp pair of secateurs, cut back all the dead flower stems and cut into a round shape, cutting into some of the fresher growth to encourage new shoots. Try not to cut too far into the old wood; this could cause lack of growth.
Once pruning is complete, remove all off cuts helping to ensure the bed is continuously tidy. Remove any weeds, mulch with compost to retain moisture and feed the new growth. If you are self-sufficient, use well-rotted garden compost. Well-rotted manure could be used as an alternative but try to avoid using bark chippings as these will make the soil more acidic. Helianthemum cultivars grow best in a chalk based, slightly alkaline soil.
Plants should be well watered after mulching to encourage fresh foliage.
When propagating new plants, the tips of fresh shoots should be regularly pinched out to encourage growth of a more bushy plant. Without this, plants could become quite straggly.