Question: Can hemlock be propagated by layering?
Answer: Yes. This is how it’s done: Bend a branch of the tree down to earth. Cut a notch on the underside of the branch 1 foot from the tip. Then bury the notched portion 2 inches deep in a spot that has been filled with moist peat-moss. Hold the layer in place by placing a rock or brick over the branch above the notch. Hemlock can be layered now or early in the spring.
If the hemlock does not have low, sweeping branches, it can be propagated in the spring by a method known as air-layering. To make this kind of layer, remove a narrow circle of bark or notch or slit a shoot 12 or 18 inches from the tip. Then dust the wound with a root-inducing powder such as Rootone, cover with a double handful of moist sphagnum moss and wrap tightly with plastic film.
