Woo Hoo! My Buddleja davidii hardwood cuttings from autumn have rooted. Not all of them… but probably a dozen or so. They have been in the greenhouse all winter so those that have taken have produced lush top growth as well as healthy new roots.
When to take hardwood cuttings
In autumn deciduous shrubs lose their leaves and become dormant. The exact timing of this event depends on where you live and your weather. In the UK this is likely to be either October or November. Early autumn is the ideal time to take cuttings as there is a very high success rate. All you need is a bit of patience.