Cutting from Erysimum?

this is very easy. chose a non flowering shoot and cut it so it is about 2-4" long. I strip all the leaves off apart from the top inch worth. I dip it in hormone rooting powder and put the whole 2-3" of stripped stem into a gritty/sandy compost or JI no 1 type compost. I then put them in a warm bottom heat propagator and just wait. A friend puts hers into a plastic bag on her kitchen windowsill. They root in about 2-4 weeks at this time of year.

you can also pull off shorter shoots that leave a 'spur or heel' of older stem and pot them as above. both seem to work well.

welcome to GoY too :o)

That's fantastic - can't wait to have a go!

Thanks so much for your help.