Prune Tree in Blossom
A prolific bearing prune tree in blossoming time is almost a solid mass of flowers. The virility thus evidenced is a very desirable trait as it insures a full yield of fruit; but it is obvious that a tree that produces fruit in such superabundance will require attention in the way of thinning the fruit if the individual plums are to attain a reasonable size.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 5 Chapter 3