Overview
The Large-Leaf Mulberry Tree (Morus alba var. multicaulis) is a cultivated variety of the white mulberry, distinguished by its exceptionally large, tender leaves. Native to East Asia, it has been selectively bred for centuries to support sericulture, as its foliage is the preferred food source for silkworms (Bombyx mori). The tree also produces edible, sweet-tart berries used in jams and beverages. Its rapid growth and adaptability to diverse soil conditions make it a practical choice for agroforestry and erosion control. In traditional medicine, extracts from its leaves and bark are valued for their purported anti-inflammatory properties.
Key Features
The Large-Leaf Mulberry Tree’s most notable trait is its foliage, with individual leaves reaching 15–30 cm in length—significantly larger than standard mulberry varieties. This characteristic maximizes leaf biomass for silkworm rearing, with high protein content promoting healthy cocoon development. The tree exhibits robust growth, often reaching 10–15 meters in height under optimal conditions. It is drought-tolerant once established and thrives in USDA hardiness zones 5–9. Unlike some fruit-bearing mulberries, this variety tends to have a longer leaf-retention period, extending its utility in sericulture operations.
Application Areas
Sericulture remains the primary application, with the leaves supplying 90% of global silkworm feed demand. A single hectare of mature trees can sustain approximately 30,000 silkworms through their larval stage. The tree’s fruit, though secondary to leaf production, is harvested for culinary uses or processed into nutritional supplements. In agroforestry systems, the tree’s deep root system helps stabilize soil, while its shade benefits intercropped plants like tea or medicinal herbs. Recent research explores its potential in phytoremediation due to its ability to absorb heavy metals from contaminated soils.
Precautions
While hardy, the Large-Leaf Mulberry Tree requires careful site selection. Avoid waterlogged areas, as prolonged soil saturation leads to root rot. Regular pruning (twice yearly) maintains leaf quality and prevents excessive height growth, which complicates harvesting. Farmers should monitor for pests like mulberry whitefly (Tetraleurodes mori) and fungal pathogens such as leaf spot (Cercospora moricola). Organic growers often use neem-based treatments for pest control. Note that pollen from male trees may trigger allergies—female or hermaphroditic cultivars are preferred for urban planting.
B2B Procurement Guide
Bulk buyers should prioritize suppliers with phytosanitary certifications to ensure disease-free saplings. For sericulture, request cultivars specifically bred for leaf yield—popular strains include ‘Kokusou’ (Japan) and ‘Jian Sang’ (China). Minimum order quantities typically start at 500–1,000 saplings, with discounts for 10,000+ units. Procurement timing is critical: dormant bare-root saplings (winter/early spring) offer highest survival rates. Verify shipping methods—saplings require moist packing to prevent desiccation. For international orders, confirm compliance with agricultural import regulations, particularly regarding soil restrictions.
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