Propagate Hydrangea. The best time to propagate hydrangeas can vary depending on the type that you are growing. Cut largest leaves down to about half their size dip cuttings in rooting hormone (this is entirely optional) and insert into damp vermiculite or sterile medium.
It may take a little bit of trial. But there are a few things you can do to achieve success. Leave around 2 inches of stem below the node.
Propagate Hydrangea Cuttings {99 Success Rate!} Propagating
There are a few different ways you can propagate hydrangea shrubs, including rooting new cuttings and ground layering. 7 steps to propagate hydrangeas from cuttings 1. But, in general, most people find it best to take cuttings in the spring. You can also root cuttings in water, though this is.
