There are no hard and fast rules for when to deadhead petunias, as timing is based on the plant’s individual bloom cycles.

Cut back creeping phlox right after it finishes blooming in spring if pruning at all. Wait until fall frost kills tall phlox before pruning to the ground; fall pruning is keeps powdery mildew at bay.

Tulips flopping in May? Learn the timely cutback that stops bulb blindness and sets up bigger, brighter blooms across UK ...