The rainbow shower tree is a hybrid between Golden Shower Tree (Cassia fistula) and Apple Blossom Tree (Cassia javanica). The flowers are a blend of the two trees. Some are more yellow than pink, while others are the reverse, giving a very spectacular look to the tree when it is in full bloom. If you are looking for something a little different, but very beautiful, this may be the tree for you. This one is in the inner circle of St. Armands Circle.
Source: Richard Lyon Nursery