Family: Apocynaceae
Common names: Red pong pong, Red-leaved Sea Mango, Red Suicide Tree, Red Cerbera
My plant ID app told me that this was a Croton plant, but I had my doubts since the flowers were very big and pretty, not the small, white, inconspicuous flowers of Garden crotons. I got the ID of this plant from a WhatsApp group of Botany nerds where you can post photos, and the experts help identify it.
I was surprised that this was one of the most poisonous plants around, planted in a residential layout. I saw Cerbera odollam or Suicide tree in Lunu ganga, Sri Lanka. And how surprising it is, that a close relative should be found in a residential complex in Bangalore!
Red Pong pong is a tropical coastal tree believed to be a reddish-leaved form of the Suicide Tree, native to South and Southeast Asia. It grows naturally in warm, humid climates, often near beaches, estuaries, and riverbanks. Like its green-leaved relatives, it thrives in tropical heat and does not tolerate frost.
Tree Characteristics
Red pong pong is a small to medium-sized evergreen tree that usually grows between 4 and 10 meters tall, with a spread of about 3 to 6 meters. It forms a rounded, dense crown.
The root system is strong and spreading, helping it anchor well in sandy or loose coastal soils, but it can also adapt to heavier garden soils with good drainage.
The bark is grey to light brown and slightly rough with age. When cut, the tree exudes a milky white sap, which is toxic and should be handled carefully.
The leaves are long, lance-shaped, and leathery, typically 15 to 30 centimeters long and about 3 to 6 centimeters wide. What makes this form stand out is its reddish to bronze-tinted young foliage, which gradually deepens while still keeping a reddish hue, especially in bright sunlight. The leaves are arranged in clusters near the ends of the branches, giving the tree a lush, layered look.
The flowers of the Red pong pong tree are very pretty, ranging in color from light pink, deep pink, maroon, and brown with beautiful light-colored margins. They are sometimes marketed as Plumerias because of the similarity between the flowers.
These flowers are about 4 to 5 centimeters in diameter and lightly fragrant. They are followed by smooth, oval fruits about 5-8 centimeters long. The fruits turn green and may develop a slight reddish tinge as they mature. All parts of the plant like leaves, flowers, and fruits are highly poisonus.
They are very closely related to Cerbera odollam or Suicide tree and Cerbera manghas or Sea mango, both known for their highly poisonous fruits.
Gardening Tips
Red pong pong trees grows best in full sun, which helps maintain the reddish color of the foliage. In partial shade, the leaves may become more green. It prefers warm temperatures year-round and should only be planted outdoors in frost-free regions. In cooler climates, it can be grown in a large container and moved to a protected area during cold spells.
This tree prefers well-draining soil but is tolerant of sandy and slightly saline soils, making it suitable for coastal gardens. Water regularly during the first year to establish a strong root system. Once established, it becomes moderately drought tolerant, though it performs best with consistent moisture.
Allow at least 3 to 4 meters of space around the tree for proper air circulation and canopy spread. Pruning is usually minimal and mainly done to shape the crown or remove damaged branches. Always wear gloves when pruning because of the toxic sap.
Fertilize lightly with a balanced fertilizer during the growing season to encourage healthy leaf color and flowering. The tree is generally pest resistant, but scale insects and aphids can occasionally appear. Because all parts are toxic, plant it away from areas where children and pets play.
Uses of Red pong pong tree
Red-leaved pong pong is primarily grown as an ornamental tree because of its copper-red foliage and showy flowers make it an eye-catching specimen in landscaped areas It works well as a standalone feature tree where its color can be fully appreciated.
Ecologically, it can help stabilize sandy soils in coastal areas. The dense canopy provides shade and shelter for birds, though the fruits are not widely eaten due to their toxicity.
Traditionally, related Sea Mango trees have been known for their highly toxic properties and have been used in some regions as fish poison or in traditional practices. However, extreme caution is necessary, as the seeds and fruits contain powerful cardiac toxins. It is not a plant for medicinal home use.
Propagation
Propagation is through seeds and semi-hardwood cuttings.
Fresh seeds germinate more reliably when cleaned and planted in warm, moist soil, while cuttings taken from healthy branches can root in a humid environment with bottom warmth, though they may take several weeks to establish.
Photographed at: Brigade Orchards, Bangalore
