
The Brazilian rain tree (Samanea saman) is a beautiful and unusual bonsai that can be grown indoors. It has an interesting trunk, leaves, and blooms with an exquisite fragrance. This post will help you care for this type of Bonsai tree by giving general information on how to grow it as well as specific tips on the watering needs for this tree.
Continue reading for more details about the best tips for Brazilian Rain Tree Bonsai care.
Brazilian Rain Tree
The Brazilian rain tree is a tropical tree that grows in the rainforest. It can reach heights of 60-80 feet, but when grown as a bonsai it will typically be much smaller. The trunk is cylindrical and has a smooth texture with prominent bumps on the surface.
The leaves are large (up to 12 inches long) and have a deep green color. They are oval in shape with a pointed tip and have a smooth texture. The flowers are small (about ½ inch long) and are white or light pink in color. They have a sweet fragrance that is reminiscent of jasmine.
The Brazilian rain tree does best when grown in an area with lots of sunlight. It can be grown indoors, but will need a sunny window or grow light. The tree should be kept moist at all times, but avoid overwatering as this can cause root rot. Fertilize the tree every two weeks with a balanced fertilizer diluted to half strength.
The Brazilian rain tree is a beautiful and interesting bonsai that can be grown indoors. It has an interesting trunk, leaves, and blooms with an exquisite fragrance. This post will help you care for this type of Bonsai tree by giving general information on how to grow it as well as specific tips on the watering needs for this tree.
Watering Needs
The Brazilian rain tree needs to be watered regularly, and should never be allowed to dry out. The best way to water a bonsai is by using a watering can with a fine nozzle. Gently pour the water over the soil until it begins to drip from the drainage holes in the pot. Be sure not to splash water onto the leaves as this can cause them to rot.
Only water the tree when the top of the soil feels dry to the touch. Check often during hot, dry weather, or if you are keeping your Bonsai in a sunny location.
Fertilizing Needs
The Brazilian rain tree needs to be fertilized every two weeks with a balanced fertilizer diluted to half strength. Fertilize during times of active growth (spring and summer) with a high nitrogen fertilizer, or during times of slow growth (fall and winter) with a balanced fertilizer.
General Care
The Brazilian rain tree can survive indoors in an area that gets some sunlight through the window every day. It should be placed near a sunny window so it will get enough light to stay healthy while inside your home.
The soil for this type of bonsai should never dry out completely, but also shouldn’t remain too moist as this could cause root rot or fungal diseases to develop on the trunk and leaves . Keep the Bonsai away from drafts from doors, windows, fireplaces etc., which may cause browning of foliage tips. If you have pets or children make sure they won’t come too close as they could damage the leaves.

Common Problems with Brazilian Rain Tree Bonsai
One common problem with Brazilian rain tree bonsai is pests. These trees are vulnerable to attack by aphids, scale insects, whiteflies, and other pests. If these pests are not treated early, they can cause damage to the tree’s leaves and branches.
Another common problem with Brazilian rain tree bonsai is overwatering. These trees thrive in moist environments, but they can be susceptible to root rot if they are watered too frequently. Overwatering can also cause the leaves of the tree to turn yellow and fall off.
Dry soil is another common problem with Brazilian rain tree bonsai. If the soil is not kept moist, the tree will not be able to absorb the nutrients it needs from the soil. This can cause the leaves of the tree to turn yellow and fall off, and it can also lead to root rot.
Fertilizer burn is another common problem with Brazilian rain tree bonsai. If a fertilizer is applied to the tree when the soil is wet, it can cause the leaves to turn brown and fall off.
Finally, the Brazilian rain tree is also susceptible to cold weather damage. If the tree is exposed to cold temperatures, it can cause the leaves to turn yellow and fall off.
If you are having trouble with your Brazilian rain tree bonsai, consult a qualified bonsai expert for help. These trees can be difficult to cultivate, but with proper care they can thrive for many years.

Diseases of Brazilian Rain Tree Bonsai
There are several diseases that can affect bonsais.
- The most common of which is Cedar Root Rot, also known as Phytophthora cinnamomi or P. lateralis. This disease has a very fast acting rate and will quickly kill the tree if not treated early enough to prevent it from spreading into underground roots and infecting other trees in your yard. If you suspect this for your Bonsai we suggest using Seaweed Fertilizer with Iron added (NPK: 0-0-16) every two months over the growing season but more often when plants show signs of stress such as wilting leaves on hot days during extended dry periods; yellow foliage; brown leaf spots etc.. We hope these tips will help you in your Bonsai cultivation.
- Another common disease is bacterial leaf spot, also known as Xanthomonas campestris or Pseudomonas syringae pv lachrymans. This bacterium begins to infect the plant when the weather conditions are warm and wet for extended periods of time which can be very hard to avoid during spring through fall months especially if your plants live outside. Symptoms include wilt along with light tan spots that enlarge rapidly into dark brown areas often surrounded by a yellow halo; foliage may drop off without rotting; black streaks may appear on stems; fruit (if present) drops quickly. If this occurs it is best to remove all affected branches right down to healthy tissue then dust with a Bordeaux mixture (copper sulfate and hydrated lime) every seven days.
- Another common disease is root rot, also known as Phytophthora parasitica or Pythium ultimum. Root rot can be caused by over watering, underwatering, compacted soil, poor drainage or high levels of salt in the soil. The symptoms of root rot vary depending on the type of fungus that is causing it, but generally include wilting leaves; yellowing foliage; stunted growth; leaf drop; dieback of twigs and branches; blackening of the bark at the base of the tree. If you suspect your tree has root rot, we suggest you take it to a qualified arborist for diagnosis and treatment.
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