The ivy geranium, one of the many varieties of zonal geranium (Pelargonium spp.), is a favorite flower in window boxes and hanging baskets. Ivy geraniums will bloom abundantly if pinched throughout the season.
Pinching an ivy geranium encourages branching, which makes the plant full. The more branching, the more flowers the plant will have.
Starting early in the season, pinching involves removing the tip of each branch. It can be done about once every three or four weeks until the weather gets hot—about mid-June for most gardeners. Flower buds will soon develop.
Deadheading, another type of pinching, encourages new buds to form in place of spent ones. It consists of simply pinching, snapping off, or pruning each flower stem after its flower fades.