By Jonsaunders
Gorey,
Ireland 
When is the best time to take cuttings from "Red Robin's" also i was thinking of getting them to root in vase with an air stone (seen on youtube) does anyone have experience...
10 Aug, 2015
Instructions here on how to propagate this plant - get the link up and scroll down the page to Propagation and click on either of the methods shown in bold for instructions as to how to do it. Haven't seen the Youtube video and don't have any experience of the method you mention anyway.
https://www.rhs.org.uk/advice/profile?pid=145
10 Aug, 2015