I took a look in your first post and I have to say that you have done an amazing job transforming that "desert" into this abundant paradise!
The tree that you are wondering its name, we call it "βούρτσα" in Greek, meaning brush, obviously because of its flower's shape. It is also known as "red bottlebrush". Its Latin name is Melaleuca citrina and it is quite common as a decorative plant.
And yes, the bees love it :)