Propagate them from heel cuttings – these are side shoots growing from the main stem, roughly 10-15cm long. Instead of cutting, carefully tear the shoot away, making sure it retains a small sliver of bark from the stem – the heel.
Dip this in rooting hormone and plant in a smallish pot. As it takes, transfer to a larger container and keep undercover for winter. Plant out in spring.
Hardwood cuttings are best taken from September to mid-winter. Good candidates for this are roses, cornus, jasmine, deutzia, buddleia, forsythia and honeysuckle, plus fruit such as fig, blackberry and gooseberry.