Rain tree (Albizia saman)

Also known as: Cow tamarind, East indian walnut, Acacia preta

The rain tree (Albizia saman) can grow up to 24 meters tall. To protect itself, it folds its leaves during rain, cloudy weather, and nighttime. This behavior helps conserve water and prevents leaf damage. The tree also produces sturdy lumber with a wavy grain, and parts of it are toxic, so handle with care.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Rain tree

Lifespan

Perennial

Plant Type

Tree

Plant Height

19 m to 25 m

Spread

30 m

Leaf Color

Dark green

Flower Size

2.5 cm to 5 cm

Flower Color

White Pink Red

Images of Rain tree

Quickly Identify Rain tree

Look for a large, spreading tree with a distinctive umbrella-shaped canopy. The leaves are bipinnate and fold when it rains or during the night. The flowers are small, pinkish, and fluffy, appearing in clusters.

Scientific Classification of Rain tree

Phylum

Vascular plants

Class

Dicotyledons

Order

Fabales

Family

Legume

Genus

Silk plants

Species

Rain tree

Planting and Growing of Rain tree

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Full sun

Sunshine Duration

6-10 hours

Ideal Temperature

77-95℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Terracotta, Plastic

How to Water Rain tree?

For Albizia saman, ensure the soil is thoroughly soaked but not waterlogged. A deep watering strategy, where you provide about 1500 ml per session, allows the roots to absorb adequate moisture, promoting healthy growth. It's essential to check the top layer of soil; it should be dry before you water again to prevent root rot.

What are the symptoms of an underwatered Rain tree? ›

What should I do if my Rain tree is not getting enough water? ›

What are the symptoms of an overwatered Rain tree? ›

How to save an overwatered Rain tree? ›

What Are the Sunlight Requirements for Rain tree?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6-8 hours per day

Albizia saman thrives in 6-8 hours of full to partial sunlight daily, which supports robust growth, vibrant foliage, and increased resilience against environmental stressors.

What is the optimal light exposure for Albizia saman? ›

How can I achieve ideal lighting for Albizia saman? ›

What benefits arise from providing ideal light conditions for Albizia saman? ›

More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Rain tree?

Ideal Temperature: 77 ~ 95℉

The ideal temperature range for Albizia saman lies between 77°F and 95°F. Within this range, the tree experiences optimal growth, as these conditions mimic its natural habitat. The temperature supports active photosynthesis, healthy foliage, and robust root development, contributing to the tree's longevity and resilience.

What Soil is Best for Rain tree?

Soil type: Sandy loam, Loam

Soil PH: 6.5 ~ 7.5

Albizia saman thrives best in soils that are rich in organic matter. This not only fuels its growth but supports the development of its foliage. Such nutrients ensure the tree's health and longevity, resulting in a vibrant canopy. Ensuring good drainage is essential for Albizia saman, as waterlogged soil can hinder root respiration and lead to root rot. Proper drainage helps the roots breathe and access the nutrients they need effectively. While Albizia saman is quite adaptable, it prefers a soil that maintains moisture without being overly saturated. Consistently moderate moisture supports healthy growth and minimizes drought stress.

How to Fertilize Rain tree?

Fertilizer type: Balanced

For Albizia saman, it's essential to use a balanced fertilizer. A good rule is to apply 1/2 pound (approximately 227 grams) of fertilizer per year for every inch of the trunk's diameter. This calculation allows your tree to receive an appropriate amount of nutrients without risking over-fertilization.

How to Prune Rain tree?

Pruning Time: Spring, Summer

Start by identifying dead or diseased branches, as well as those growing inward or crossing each other. Removing these helps improve airflow and sunlight penetration, promoting healthier growth. Make cuts at a slight angle just above a node or a branch junction. This ensures water drains off and minimizes the risk of water-based infections, promoting quicker healing and rejuvenation. Trim to maintain a balanced shape while ensuring the canopy is not too dense. This allows sunlight to reach the center of the tree, which is crucial for overall vigor and growth consistency. More About Pruning Techniques→

How to Propagate Rain tree plant?

Propagate Time: Early spring, Summer

Choose seeds that are plump and healthy or cuttings that are disease-free from a mature Albizia saman. Ensure seeds are fully viable and cuttings are taken from a robust branch.

For seed propagation, use a sterile, well-draining soil mix. For cuttings, prepare a medium rich in perlite or sand to facilitate drainage and root development.

Ensure the seeds or cuttings receive warmth (around 75°F for germination) and bright indirect light to simulate ideal growth conditions.

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How to Repot Rain tree plant?

Repotting frequency: Once every 2 years

Albizia saman signals the need for repotting when you notice roots poking out from the drainage holes or when growth seems stunted. Spring to early summer is ideal, as the tree is actively growing during this period, allowing it to recover swiftly from the stress of repotting.

Select a pot that is 2-3 inches larger in diameter than the current one to allow root expansion. Ensure the pot has adequate drainage holes, as Albizia saman detests waterlogged conditions. Using a suitable pot ensures healthy root development and reduces the risk of root rot.

Opt for well-draining loamy soil mixed with some sand and organic matter. This composition retains adequate moisture while ensuring excess water drains away swiftly, mimicking Albizia saman's natural habitat and preventing common issues like root rot.

Toxicity of Rain tree

Is Rain tree toxic to humans?

The rain tree presents a mild toxicity hazard to humans, mainly through unintentional consumption. This entire plant is composed of compounds like tannins, saponins, and glucosides, which can trigger negative reactions. When these substances are swallowed, they may result in symptoms such as gastrointestinal distress, nausea, and allergic responses. The intensity of these symptoms can vary based on the quantity ingested and the individual's sensitivity. Since every part of the rain tree has the potential to be poisonous, it is advisable to exercise caution to avoid unintentional ingestion, particularly among more vulnerable groups, such as children who may be drawn to its attractive appearance.

Is Rain tree toxic to cat?

The rain tree represents a slight toxicity risk for cats. Ingestion of any part of the plant, even accidentally, can result in poisoning. Cats may show symptoms of illness upon contact with the rain tree, which is due to the presence of tannins, saponins, and glucosides in it. Cat owners must vigilantly observe their pets and obtain prompt veterinary assistance if any signs of distress or illness occur following exposure to the rain tree.

Is Rain tree toxic to dog?

The rain tree is recognized for possessing a moderate level of toxicity for dogs. Canines may experience poisoning if they inadvertently consume any portions of the plant. All parts of the rain tree, including the leaves, bark, and seeds, should be regarded as potentially dangerous when ingested. Dogs that have ingested portions of the rain tree may show signs such as gastrointestinal distress or skin irritation. If you think your dog has eaten any part of the rain tree, it is crucial to obtain immediate veterinary assistance to guarantee proper treatment and management of any negative reactions.

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.

More About Toxic Techniques→