Today I was in the garden centre while my car was being washed. I was looking at climbers and small trees and came across Prunus Kiku shidare zakura. The label said it grew to 2.5 m x 2.5 m and didn't need pruning. That would be ideal for my sunny spot. When I got home I read that its final height was 4m and it needed pruning. Which of these do I believe? G.