I layered this oak leaf hydrangea last fall. over the winter the stem has produced roots and new leaf growth has emerged. I will leave it attached to the parent plant until winter dormancy and then cut the old stem, dig up and replant.
This Spring I have layered several choice shrubs, including the Cotinus coggygria 'Royal Purple". First find a stem that can be bent to the ground without damage, then wound the stem by scraping away the outer layer of bark to expose the green cambium layer.
Scrape a channel in the soil, bury the wounded area of the stem, cover with soil and weigh down with a medium size stone, or other similar weight.
Other shrubs that we are layering.
Duetzia, right foreground
worth propagating for its fragrance.
Here past its best, but still an exceptional shrub.
Sometimes no assistance is required, if the stem is resting on the ground it will produce roots as with this Cotinus.
This self sown seedling is of a different Wigela cultivar, but it may not come true to type.
These seedlings from the spirea back center may also show variations from the parent plant
At first I thought this must be a seedling from the parent rose
But it is an off shoot from a root. I've never seen this before on a rose.