Genus - Hydrangea
Hydrangea is a genus comprised of of over 70 species. Hydrangea flowers are found in three types, mopheads, lace caps and cone shaped. Mopheads are roundish with many flowers forming the head. Lacecaps are round with a flatened head. These have small true flowers in the center and are surrounded by sterile showy flowers on the perimeter. Cone shaped are in the form of a cone.
Culture - Most hydrangeas like sun in the morning and afternoon shade. For the first two years after planting make sure they are watered well. They can dry out. For some varieties pH can change the flower color. See our Explanation of changing hydrangea flower color here.