Hawthorn and locust tree flowers

Last week the honey locust trees began to bloom. Though their leaves and seed pods look a lot like those of the black locust trees, the flowers are completely different, suggesting that the two types of trees are not closely related.
I also noticed that the hawthorn tree by the post office is blooming. The other hawthorns that I have seen bloomed weeks ago, shortly after the apple trees.
Finally, the brambles are blooming or have bloomed already. That means raspberries and blackberries are on the way.