It’s easier than you may think to root cuttings from your hydrangea bushes. The first step is to select a choice stem for cutting. A stem for hydrangea propagation should be at least six inches long, with no flower. The stem needs to be a new growth which is a lighter green than old growth. Once you have selected a stem to propagate, use pruning shears to cut the stem off just below a leaf node. A leaf node is where a set of leaves will be attached to the stem. The hydrangea cutting should contain at least one additional set of leaves above the selected leaf node.
Next, strip all but the top most set of leaves from the cutting. The cutting should have only two leaves left. Cut the two remaining leaves in half crosswise. This will prevent excess water loss from the cutting and will quickly callus over. Dip the end of the cutting in rooting hormone which will increase the chances of successfully propagating hydrangeas. Put the cutting into damp potting soil. Use a pencil first to make a hole, then firmly press the soil around the stem. Cover the pot with a plastic bag, making sure that the bag does not touch the leaves of the hydrangea cutting.
Place your hydrangea cuttings in a sheltered location out of direct sunlight. Check your hydrangeas every few days to make sure the soil is still damp. In about four weeks, the cutting will be have grown new roots. Your hydrangea propagation will be complete. That is all you need to know about how to propagate new plants for friends and family.