Growing a Siberian Elm
I have Siberian elm hedges, but have been unsuccessful in getting the cuttings to grow. Any suggestions?
— Carol Elliott, Corsica, Pennsylvania
As you've found out, it's more difficult to start trees and shrubs from cuttings than it is flowers and houseplants.
Proper timing, however, is the key to success. Take 6-inch cuttings of your Siberian elm in early June. Dip the cut ends into a rooting hormone specifically designed for woody plants, then stick your cuttings into moist vermiculite, perlite or sand. Keep the rooting material moist and the plants out of direct sunlight.
When the cuttings have taken root, transplant them into a container of well-draining potting mix. Move to a sunny location and water as needed.
Move young plants to their permanent location once the root system is established. Continue to monitor their progress and provide the care it needs.