The trees here that bloom as tiny trees are all under the edge of big oaks and pecans. The majority of them in the wild are understory trees but after saying that, The trees in full sun bloom just a little time after
We got 10 redbuds from arbor day a 7 years ago to give to a co-worker that was getting her first house and they still haven't bloomed. Gardening does try to teach us patience, lol
