Hi,
I planted a plum tree in my garden last year and it has been doing
remarkably well. There is plenty of fruit on it this year,
unfotunately, I noticed some nasty growth on one of the plums.

http://img201.imageshack.us/img201/28/plumya6.jpg

I'm a complete plum novice so any info regarding the disease / pest
and possible cure would be most appreciated !

Thanks !
Uncle C

Sunny High Wycombe.