HYDRANGEA GROWING TIPS
Pruning: Mopheads, Oakleafs and Lacecaps. These all bloom on old wood. In the spring, only remove all dead stems. These are the ones that do not sprout. If your bushes are getting too thick, up to 1/3 of the older stems can be cut down to the ground in the summer. To tidy and neaten up the bush- you can cut it in June or July-never August. It is also OK to cut long stems on your fresh cut stems for bouquets in June or July.
Pruning: Paniculatas and Arborescens(Annabelle) types. Prune in the winter or right before Spring. Paniculatas can be whacked back pretty hard then. Annabelle should be just shaped up.