Hydrangea loses moisture quickly through its large petals, so change the vase water daily and refresh the stem with a sharp cut. If a bloom wilts, fully submerging the head in cool water for 20–30 minutes helps revive it. In a cool spot away from drafts, hydrangea lasts 5–8 days.
Hydrangea works well as a standalone gift for a birthday or housewarming — its large blooms fill the space instantly.