Air layering Prunus spinosa

Hi all
I have one request. Does anyone have experience with air layers Prunus spinosa?
Thanks Pavel

In my somewhat limited experience with Prunus sp., they are difficult to layer.

Hi Pavel, I tryed airlaying on 15 occasions last Spring and none took. I've left them wrapped in a hope they'll take in future but not holding any hope. I get almost 100% success with maples so I do'nt think it's my technique, they're just difficult me thinks