The State of Florida abounds with flowering trees of every shape and color, so if you want some yellow in your garden you should have no problem finding a tree that appeals to you. Florida is home to several tropical flowering species that will not grow in most of the other states. Many of them are very easy to grow and inexpensive to plant.
The Cassia fistula may have a funny name but it really would make a lovely addition to your yard. The golden shower can grow up to 40 feet in height and reach a spread of 40 feet. This tree grows quickly and in summer it is covered with thick clusters of flashy yellow flowers. The branches of the golden shower are naturally droopy so when it blooms it looks like the tree has so many flowers that they flowers are weighing the branches down. Be careful where you plant a golden shower because the seeds from this tree are poisonous.
The little Tabebuia caraiba could be the perfect tree for your front lawn. Yellow trumpets can grow to about 25 feet tall with a spread of 15 feet. They are evergreen trees with deeply furrowed, silvery bark and silver foliage. This tree is especially prized for its contorted trunk and branches, which produce a brilliant display of two to three inches long, yellow, trumpet shaped flowers sporadically throughout the year. These trees are nearly always in bloom in winter.
Although similar in name and look to the yellow trumpet, the Tabebuia chrysotricha or golden trumpet can grow up to 50 feet tall. Most specimens are much smaller, topping out at 15 to 25 feet though. The golden trumpet displays its bright yellow, trumpet shaped blossoms in the late spring and then sporadically throughout the warm season.