Landscaping With Pink Rainbow Shower Trees
Rainbow Shower trees are fast growing pink flowering trees which can be easily grown in the tropical and subtropical climates. This tree is actually a new hybrid, a cross between the Cassia Javanica (also known as the Golden Shower) and Cassia Fistula. Cassia Javanica is sometimes referred to as the pink shower tree, although this name also refers to few other trees in the Cassia family.
It may be noted that sometimes the Cassia Javanica are also called as the Apple Blossom Trees, even though they do not produce apples or any other edible fruits. The similarity of their flowers to apple blossoms is probably the reason for the name.
As the Rainbow Shower Tree is a hybrid from the Pink Shower and Golden Shower trees, they usually produce flowers which can be light pink or crimson pink and also light yellow or even white coloured flowers. In fact, the colour of the flowers usually vary between shades of pink, red, orange, yellow and white colours and this should be the reason for their name.
Many times each flower has a combination of these colours. In fact, they look stunning with lots of flowers that bloom in a variety of colors in the same tree, and with the beautiful green leaves that form in pinnae.
When they are in full bloom, they literally produce a showering of flowers even when there is a mild wind. When in full bloom, they look so pretty with lots of flowers over the wide canopy. They are often planted in streets, parks and gardens for shade.
It usually grows up to 50 metres in height and it has a very wide canopy with many number of branches, which make them good for shade.
Cassia is the general name for a group of flowering trees that comes under the legume family Fabaceae. There are more than a hundred species of flowering plants in this family. Both parents Cassia Javanica and Cassia Fistula are tropical trees which are native to Southeast Asia and they are grown very widely in the Southeast Asian countries.
The scientific name assigned to this relatively new hybrid of Cassia Fistula and Cassia Javanica is Cassia x nealiae.
Do you like to see the flowers in the parent species?
Below you can see pictures of flowers from the parent species, Cassia Fistula and Cassia Javanica which are also known as the Golden Shower Trees and the Pink Shower Trees respectively.
The Growth and Characteristics of Rainbow Trees
They grow well in tropical climates and need full exposure to sun for growth and flowering. The soil should be well drained where the roots of the tree can grow deeper. They usually reach a height of about 50 metres and develop a broad canopy of numerous branches, which makes them excellent for shade. The large number of branches they develop seem to be brittle and mostly prone to breaking when there are strong winds.
Make sure you have enough space, as they grow deep roots and develop large number of wide and long branches. It is not a good idea to plant these trees near buildings and other structures, as the roots can interfere with the foundation of the buildings and also the growth of the branches may be affected. The trees usually bloom fully in the spring season. When they bloom, they look stunning due to the large number of flowers that form in racemes in pink, yellow, light orange, red and white colours.
Its green coloured seeds are produced in long cylindrical seed capsules which can be 25 cm long. They turn dark brown or black in color as they matures and get dried. And the natural propagation happens through the dried seeds that burst out of the pods. However, they produce very few or no such seed capsules and so the propagation must be done through either grafting or air layering techniques.
They can usually tolerate droughts, but they don't do well in extreme cold climates. Sometimes, they seem to survive mild winters. Today, they are widely grown in Hawaii and you can see many especially in Honolulu where it is also the official tree. They are also grown in many parts of Southeast Asian countries and also in places like Florida and Texas.
To summarize, they make excellent ornamental trees and shading trees provided they have enough space to grow and they are planted in areas with tropical and subtropical temperatures. If you have a garden with enough space to grow the rainbow shower trees, they definitely will make your garden look unique and attractive. They are not only beautiful, but the flowers are fragrant and they can attract butterflies and humming birds.