Hydrangeas are a favorite among many gardeners, serving them faithfully with yearly clusters of pink, white or blue flowers. To propagate your beloved hydrangea bushes, you can easily do so from cuttings Once rooted, plant the cuttings outdoors in rich, well draining soil located in a partially sunny spot, such as in the garden on the north or east side of your home. Root cuttings from hydrangeas the late spring or summer when the bush has finished blooming.
Take your cutting from a stem that did not bloom during the current year. It should be about 5 to 6 inches long and appear to be healthy and free from disease.
Pinch off the bottom two leaf sections with your fingers. This is where the roots will form. Then, cut the largest remaining leaves in half with a pair of scissors. This will help focus the plant's energy on forming roots rather than using it on keeping large leaves healthy.
Dip the bottom portion of the cutting where you pinched off the leaves in a rooting hormone, which is available at most garden centers. This step is not required, but will help ensure successful propagation.
Plant the cutting in a pot filled with slightly damp vermiculite or new potting soil. The top of the soil line should be midway between the top leaf area that you pinched off and the first set of leaves. Plant multiple cutting about an inch apart.
Loosely lay plastic wrap over top of the pot and cuttings. Insert small wooden stakes (even pencils will work) to lay the plastic over so it does not touch the leaves.
Set the pot in the shade and only water when the top of the soil feels dry. Tug at the cuttings in a week to see if you feel any resistance. When you feel resistance, your cuttings have taken root. It could take up to three weeks to root.