White Jute

Corchorus capsularis is believed to be native to the Indo-Burmese region and possibly southern China.

• Cultivated primarily in Bangladesh and the Indian states of West Bengal, Bihar, and Assam
• Also grown in China, Thailand, Myanmar, Nepal, and Vietnam
• Likely domesticated independently from C. olitorius in the Ganges delta region
• Cultivated for fiber since at least the 3rd century BCE
• The British East India Company massively expanded jute cultivation in Bengal during the 19th century
• First described by Linnaeus in 1759
• Jute was one of the most valuable exports of British India, second only to cotton

An erect, annual herb growing 1.5 to 3.5 meters tall when grown for fiber.

Stems:
• Erect, slender, green to reddish, 1 to 2 cm in diameter at base
• Branches sparse in dense plantings, more numerous when widely spaced
• Inner bark yields long, strong bast fibers (white jute)

Leaves:
• Ovate-lanceolate, 5 to 12 cm long and 2 to 5 cm wide
• Serrate margins with characteristic stipular appendages at the base
• Bright green, glabrous to slightly hairy

Flowers:
• Small, 1 to 2 cm in diameter
• Yellow petals, typically 5
• Born in small cymes in leaf axils

Fruit:
• Distinctively globose (spherical) capsule, 1 to 1.5 cm in diameter
• Wrinkled or ribbed surface when dry
• Contains numerous small, brown, angular seeds
• The globose fruit is the key distinguishing feature from C. olitorius (elongated capsule)

Corchorus capsularis plays an important ecological role in the Ganges-Brahmaputra delta and tropical Asian agricultural systems.

Habitat:
• Believed native to the Indo-Burmese region, possibly southern China
• Cultivated primarily in Bangladesh and the Indian states of West Bengal, Bihar, and Assam
• Found at elevations from sea level to approximately 600 meters in tropical alluvial floodplains
• Thrives in warm, humid conditions with annual rainfall of 1,500 to 2,500 mm
• Prefers fertile, moisture-retentive clay loam soils in river delta environments
• USDA zones 10–12 (strictly tropical, highly frost-sensitive)

Growth Habit:
• Erect annual completing its lifecycle in 90 to 150 days depending on variety
• Daylength-sensitive — flowering triggered by shortening days in the monsoon-to-post-monsoon transition
• Full sun crop requiring warm temperatures (25 to 35°C) throughout the growing season
• Tolerates seasonal waterlogging common in delta agriculture

Pollination:
• Small yellow flowers are primarily self-pollinating (cleistogamous tendencies reported in some cultivars)
• Insect pollinators including bees and flies may improve cross-pollination rates
• Flowers open early in the morning and are relatively inconspicuous

Ecological Role:
• Important rotation crop in Bengal — grown during the monsoon season between rice crops
• Fiber crop prevents soil erosion on riverbanks and embankments when grown in dense stands
• Crop residues (jute sticks) are used as fuel, fencing, and building material, reducing deforestation pressure
• Green manure value — leaf fall during growth returns organic matter to the soil
• Provides habitat for beneficial insects including ladybird beetles and lacewings in agricultural landscapes

Invasive Status:
• Not invasive — tightly bound to agricultural cultivation
• Some escaped populations reported near cultivation areas in Bangladesh but not problematic
• Declining in some areas as farmers switch to synthetic fiber alternatives

White jute leaves are edible and nutritious.

• Per 100 g fresh leaves: approximately 40 to 50 kcal
• Good source of protein (3 to 4 g per 100 g)
• Contains beta-carotene, vitamin C, and some B vitamins
• Provides iron, calcium, and phosphorus
• Moderate dietary fiber content
• Leaves are less commonly eaten than those of C. olitorius but similarly nutritious

Propagated by seed directly sown in the field.

• Sow seeds broadcast or in rows during the warm, wet monsoon season
• Requires moist, warm conditions: 25 to 35°C and high humidity
• Prefers alluvial, fertile soils with good moisture retention; tolerant of seasonal flooding
• Germination in 3 to 5 days under optimal conditions
• For fiber: thin to 5 to 8 cm between plants in rows 25 to 30 cm apart
• Plants reach fiber maturity in 100 to 130 days
• Harvest by cutting stems near ground level before seed pods mature
• Retting (soaking stems in water) for 8 to 20 days separates fiber from woody core
• For leaf production: harvest tender tips at 30 to 45 days, similar to C. olitorius

Culinary uses:
• Young leaves are cooked as a potherb in parts of Bengal and Southeast Asia
• Used in soups and stews similar to molokhia preparations
• Leaves can be dried and stored for later use
• Young shoots are occasionally eaten boiled or steamed
• In China, leaves are sometimes added to congee (rice porridge)
• Seeds can be roasted and used as a condiment in some traditional cuisines