[griff]

What time of the year do you prune damsons, how far back do you prune.

[Yorkie]

Damsons are a form of plum, aren't they?

Plums are pruned this month, see this rhs link
http://apps.rhs.org.uk/advicesearch/Profile.aspx?PID=339

[evie2]

Well I never, it seems I've been doing something right without knowing it

Also, last year because our plum tree was so full of fruit, it was sometimes easier to cut the end of the branch with the plums on.  This year there's more fruit than ever before

[Kleftiwallah]

Damson wine, one of the best and easiest to make.      Cheers,   Tony.