However much we strive for continuous colour and long-lasting floral fireworks, most gardens wax and wane to a certain extent. As the freshness and vigour of late spring gives way to the languor of high summer, beds and borders can lose some of their impact, and by the time that July comes around, the display can start to sag.
With recent erratic weather bringing dry springs and unseasonal periods of cold, plants have been held back, with their growth delayed until conditions improve. Depending on the duration of the drought and the intensity of the chill, this can have a knock-on effect on the timing and performance of summer-flowering plants, in a way that is not always predictable.
Another reason for ending up with a boom-and-bust garden is going to…