Take a healthy, non-flowering stem cutting in late spring or early summer
Cut a 4 to 6 inch section just below a leaf node
Remove the lower leaves, leaving 2 to 4 leaves at the top
Trim large leaves in half to reduce moisture loss
Dip the cut end in rooting hormone
Fill a pot with moist, well-draining potting mix
Insert the cutting into the mix so at least one node is buried
Firm the soil gently around the cutting
Water lightly to settle the mix
Cover the pot with a clear plastic bag or humidity dome
Place the cutting in bright, indirect light
Keep the soil consistently moist but not soggy
Vent the cover occasionally to prevent mold
Check for roots after 2 to 6 weeks by gently tugging the cutting
Transplant into a larger pot or garden location after roots form
Harden off the new plant before moving it outdoors permanently
Propagate by layering by bending a low stem to the ground
Wound the stem slightly where it touches the soil
Pin the stem down and cover the wounded section with soil
Keep the area moist until roots develop
Cut the new plant from the parent and transplant it
Propagate by dividing mature hydrangea plants in early spring or fall
Dig up the plant carefully
Separate rooted sections with a sharp spade or knife
Replant the divisions immediately and water well