Panicled Hydrangea, Flowers

Hydrangeas are widely recognized for their beautiful, showy blooms, but they're also a great plant to grow if you're looking for something that grows fast. "Panicled hydrangea (Hydrangea paniculata) is a deciduous shrub that produces medium to large, elliptical to oval shaped, bright green leaves in mid-spring," says Adrienne Roethling, garden director for Paul J. Ciener Botanical Garden.

Shortly after, panicles of flowers appear in a cone-shaped inflorescence. "Flowers last well throughout the summer months and turn a red or cinnamon color in fall," says Adrienne Roethling. Expect the shrub to reach maturity within three years, growing 12 inches or more a year if conditions are ideal.