With the arrival of summer, amid the harshness of nature, one striking sight often appears—clusters of golden Sonalu flowers. Hanging in long, cascading bunches, these yellow blossoms look like nature’s own ornaments. From a distance, the trees appear draped in golden arches, silently welcoming passersby with their natural elegance.
The Sonalu tree (Cassia fistula) is widely known for its spectacular floral display. It is commonly called Sonalu or Bandarlathi in different regions. In English, it is known as the Golden Shower Tree—a name that perfectly reflects its appearance when golden flowers fall like rain.
Tree characteristics and distribution
The Sonalu tree typically grows between 15 and 20 meters in height. It has relatively few branches and a straight, upright trunk. It grows well in both high and moderately elevated lands. Though its origin is believed to be in the Himalayan region, it is now widely found across Bangladesh, India, Pakistan, and Myanmar.
In Bangladesh, most Sonalu trees grow naturally without cultivation, often thriving in neglected conditions. Yet even in such circumstances, they bring life and vibrancy to the dry summer landscape.
Flowers and fruits
The most captivating feature of the Sonalu tree is its hanging clusters of flowers. Amid green foliage, the golden blossoms create a breathtaking visual contrast. After flowering, long pods develop on the tree, resembling drumstick vegetables in shape. These pods can grow nearly one foot long. They start green and gradually turn dark brown as they mature. In some regions, these pods are also referred to by the same local name as the tree.
Medicinal value
Beyond its beauty, the Sonalu tree also holds medicinal value. Its leaves and bark have traditionally been used in herbal treatments for ailments such as diarrhea and diabetes.
Natural beauty across regions
Sonalu trees add charm to various parts of Bangladesh. In districts such as Gazipur, large numbers of these trees enhance the beauty of resort areas and outdoor filming locations.
They are also visible along the Cox’s Bazar Marine Drive and within the campus of Cox’s Bazar Government Girls’ High School, attracting nature lovers and visitors alike.
In the intense heat of summer, when nature often appears dry and exhausted, the Sonalu flower offers a refreshing contrast. These naturally growing trees remind us that beauty in nature unfolds on its own—what it truly needs is attention and preservation.
By Abdu Rashid Manik
Photo: Abdu Rashid Manik
