Sericulture is the practice of raising silkworms specifically to produce raw silk, combining agriculture and manufacturing into a single, long-running process. It starts with growing mulberry trees to feed the worms and ends with reeling continuous silk filaments off harvested cocoons, and the entire cycle has remained largely unchanged for thousands of years despite modern advances in the textile industry.
Where Sericulture Began
The practice traces back to the Shang Dynasty in China, roughly between the 16th and 11th centuries BC, where silk production was treated as a sacred occupation rather than an ordinary trade. From there, the technique spread across Asia and eventually reached Europe, carried largely along the trade routes that would later become known as the Silk Road. That long history is part of why China and India remain the two dominant producers today, together accounting for more than 60 percent of the world's silk output.
The Silkworm at the Center of It All
Bombyx mori, the domesticated silkworm moth, is used in the vast majority of commercial silk production, since it spins a single, unbroken filament that produces exceptionally high-quality fabric.
These caterpillars feed almost exclusively on mulberry leaves, and the cultivation of mulberry trees for this purpose is known as moriculture, an inseparable part of the broader sericulture process.
A single female moth typically lays between 300 and 500 eggs, which hatch within roughly 9 to 14 days into larvae that begin feeding almost immediately.
The full life cycle, from egg to emerging moth, generally takes somewhere between 45 and 55 days, passing through four distinct stages: egg, larva, pupa, and adult moth.
How Raw Silk Actually Gets Made
Once the larva reaches full size after several molts, it stops feeding and begins spinning a cocoon, secreting a liquid protein called fibroin that hardens into a continuous filament as it hits the air.
A gummy substance called sericin holds the filament together within the cocoon, and a single cocoon can contain more than 900 meters of usable silk filament.
Before the moth can emerge and break the filament, the pupae inside the cocoons are killed using steam or dry heat, a step known as stifling.
The filaments are then unwound from the softened cocoons in a process called reeling, with several strands twisted together to create a stronger, usable thread of raw silk.
Beyond Mulberry Silk
Mulberry silk accounts for the largest share of global production, but it isn't the only type cultivated. Wild silk varieties such as Eri, Muga, and Tasar come from different species of silkworms and are typically processed with fewer chemical treatments, often skipping steps like degumming that are standard in conventional mulberry silk production. Each of these varieties carries its own texture, sheen, and durability, giving the broader silk industry more diversity than most people assume.
Why It Still Matters Economically
Sericulture remains a significant source of rural income in countries like India and China, generating employment through mulberry cultivation, silkworm rearing, and the reeling and weaving stages that follow. In India specifically, states including Karnataka, Andhra Pradesh, West Bengal, and Assam continue to run sericulture as an established regional industry rather than a fading craft.
Sources
Sericulture, Britannica: https://www.britannica.com/topic/sericulture
Sericulture, Wikipedia: https://en.wikipedia.org/wiki/Sericulture
What Is Sericulture? The Process of Making Silk, Biology Insights: https://biologyinsights.com/what-is-sericulture-the-process-of-making-silk/
Sericulture Process in India: Types of Silk, Steps & Production, Tractor Karvan: https://tractorkarvan.com/blog/what-is-sericulture-farming