Prune early-summer flowering shrubs, such as Philadelphus, once they have finished flowering. Cut back flowered growth to a strong lower shoot and thin out up to a fifth of old, woody stems. Cut back hardy geraniums to ground level after they have had their first flush of flowers to encourage new foliage and more flowers later in the year.
Divide congested clumps of bearded iris after flowering. Dead head bedding plants, roses and herbaceous plants to encourage more flowers. Make sure fruit trees and bushes are well watered to support the developing fruits. Stone fruit trees such as plums and cherries can be pruned this month.
