How to Grow Cassia Siamea | Senna Siamea Care

Cassia Siamea is a stunning flowering plant with yellow blooms that you can easily grow in your yard for an all year round beauty!

 Cassia Siamea

 Cassia Siamea stands out with its clusters of yellow blooms that makes it look like a living bouquet! Keep on reading to know the best tips and tricks to grow it!

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Cassia Siamea Information

Cassia siamea is a tropical tree that belongs to the Fabaceae family. It is native to South and Southeast Asia, including Thailand, India, and Myanmar. Cassia siamea is a medium-sized tree that typically reaches a height of 10-15 meters. It has a straight trunk and a spreading crown with dense foliage. The leaves are pinnate and measures around 10-25 cm in length, with each leaflet being lanceolate in shape.

The tree produces beautiful, bright yellow flowers that are clustered in pendulous racemes. The flowers resemble showerheads, which explains one of its common names, “golden shower.” The flowers bloom profusely during the spring and summer seasons. After flowering, Cassia siamea develops elongated, cylindrical seed pods. When ripe, these pods turn brown and split open, revealing small, black seeds.

Common Names: Kassod Tree, Thai golden shower, Siamese Cassia, Thailand Shower, Johar, Jahor, Busuk-Busuk, Petai Belalang

Here are the common names of Cassia siamea in different Indian languages:

Hindi: सियामी सेना (Siyaami Sena)
Bengali: থাঈ সেনা (Thai Sena)
Telugu: సియామీసెన (Siyaamii Sena)
Tamil: சியாமிசெனா (Siyaami Sena)
Kannada: ಸಿಯಾಮಿ ಸೆನ (Siyaami Sena)
Malayalam: സിയാമി സെന (Siyaami Sena)
Marathi: सायमी सेना (Sāyamī Senā)
Gujarati: સિયામી સેના (Siyāmī Sēnā)
Punjabi: ਸਿਆਮੀ ਸੇਨਾ (Siāmī Sēnā)
Odia: ଥାଇ ସେନା (Thai Sena)

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How to Propagate Cassia Siamea

Cassia siamea can be propagated through various methods, including seeds, cuttings, and air layering. Here’s a guide on how to propagate this plant using Seed technique:

Propagation by Seeds:

  1. Collect mature seeds from the tree. The seeds are typically found inside the elongated seed pods that develop after flowering.
  2. Soak the seeds in water for a few hours before sowing to enhance germination.
  3. Prepare a well-draining potting mix using a combination of sand, perlite, and peat moss.
  4. Sow the seeds about 1-2 inches deep in the potting mix.
  5. Water the seeds lightly and keep the soil consistently moist, but not waterlogged.
  6. Place the pot in a warm and sunny location with indirect sunlight.
  7. Germination should occur within a few weeks, and once the seedlings have grown a few inches tall, they can be transplanted to larger containers or directly into the ground.

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Requirements to Grow Cassia Siamea

 Cassia Siamea 3


The plant thrives in full sunlight, and it is essential to provide it with at least 6-6 hours of direct sunlight daily. Placing the plant in a sunny location ensures healthy growth and abundant flowering.


Choose well-draining sandy loam soil enriched with organic matter like compost or manure. This blend ensures proper drainage, preventing waterlogging and potential root rot.

The added nutrients from organic matter promote robust growth and vibrant flowering, providing an ideal foundation for Cassia siamea to flourish in your Indian garden.


While the plant is establishing its roots, regular watering is essential. Once established, Cassia siamea is drought-tolerant and requires water only during prolonged dry periods. Allow the topsoil to dry between waterings, but avoid letting the soil dry out completely.


Cassia siamea thrives in tropical and subtropical climates, making it well-suited for most regions in India. It prefers temperatures between 20°C to 35°C, and it can tolerate brief periods of colder temperatures.

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Cassia Siamea Care


During the growing season, feed the plant with a balanced liquid fertilizer every 2-4 weeks to promote healthy growth and flowering. Reduce or stop fertilization during the dormant season.


Prune Cassia siamea to maintain its shape, remove dead or diseased branches, and encourage bushier growth. Pruning is best done after flowering or during the early growing season.

Pests and Diseases

This plant is generally resilient against pests and diseases. However, keep an eye out for common garden pests like aphids and caterpillars. Use natural remedies or organic insecticides if needed.

Overwatering can lead to root rot, so ensure proper drainage to prevent this issue.

Uses of Cassia siamea

Various parts of the Cassia siamea tree have been used in traditional medicine. For example, the bark is believed to have antimicrobial properties and is used to treat skin infections and wounds. The leaves are used to relieve fever and treat respiratory ailments, while the seeds are used as a laxative.

Cassia siamea has properties that make it useful for environmental conservation. Its deep roots help in preventing soil erosion and stabilizing slopes. Moreover, it is a pioneer species that can thrive in degraded areas and thus aids in ecological restoration.

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