I have a Thames Cross plum tree and a Lizzie plum tree which are now 4 years old. Lizzie produces loads of fruit while Thames has at the moment got a few blossoms on just one branch. I was led to believe that these trees had pollination groups which were compatible...i know now that they are groups A and D which are not! I have bought a crab-apple tree- could this help?
- 21 Mar, 2011