There a great set of trees. I think be good to make a set as Multi-select and put people under some of them. Should look good in parks and play grounds.
For those interested in doing their own flowering trees.
I found sets of trees several years ago. I downloaded the arctic and the temperate ones. Arctic set has 15 types of trees and the temperate has 13.
This particular set from the temperate set is what I used for the trees in streets and for flowers. Any one like these sets here they are zipped up. I not don't remember where I got them from .. I think they are as Quast65 said original OpenGFX trees, but if we wrong, please let me know so I can credit who actually did them.