Gardeners urged to deadhead and prune plants for healthier blooms

Garden experts across the UK, France and the US recommend regular deadheading and pruning to keep summer‑blooming plants vigorous and disease‑free. Christina Stembel, founder of Farmgirl Flowers, advises cutting faded dahlia heads back to the first pair of healthy leaves, saying, “It’s one of the simplest ways to keep them flowering for months.” The same principle applies to agapanthus, where removing the entire stem rather than just the flower head prevents the plant from wasting energy on seed formation.

In August, garden advisers stress that maintenance, not major intervention, is key. Andrew Jackson, award‑winning garden writer, notes, “August is about maintenance rather than major intervention,” and suggests deep watering, regular deadheading of roses and removing diseased foliage. Luke Newnes adds that deadheading roses, dahlias and cosmos in late summer reduces fungal disease risk and encourages a fresh wave of colour.

Overall, the guidance emphasizes cutting spent blooms before seed heads develop, sanitising tools between plants, and ensuring adequate water, especially during heatwaves, to promote continuous flowering through autumn.