How to propagate hydrangeas
Step 1
Start with a fresh green stem, taken in spring or early summer. If you haven’t done so already, deadhead the flowers down to where you get living stems.
Step 2
Cut healthy pieces of stem about 15–20cm long, positioning the top cut above a pair of emerging leaves, close to the node, and the bottom cut also just above a node.
Step 3
If lower leaves are mature, remove all but the top 2 and cut these in half to reduce water loss as roots eventually begin to form.
Step 4
Dip the cuttings into rooting hormone gel or powder and insert into pots filled with propagating mix so about a third to a half of the cuttings are buried.
Step 5
Water well and put pots in a protected spot, out of direct sunlight. Keep your cuttings moist but not soggy.
Step 6
Roots should emerge and be strong enough for transplanting to your garden or another pot in about a month.
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