Almost all varieties of Hydrangea (except climbing Hydrangea and H. quercifolia) can readily be multiplied in summer. Young, non-woody shoot tips with no flower buds are best suitable.
The leaves of the cuttings need to be shortened to about a third using scissors, so that less water evaporates during the growth of the leaves. The branch is then inserted into a pot with special potting soil. It is watered and pressed gently.
The rooting has the best chances of success in a partially shady place at about 68F (20C) in a humid climate. After about three weeks the cuttings have grown to a young plant.