'Obsidian Sweet' – Premium Black Seedless Watermelon Seeds 

Overview:
The 'Obsidian Sweet' Seedless Watermelon is a premium variety that combines the elegance of a jet-black rind with the sweetness of crisp, ruby-red flesh. Early-maturing, disease-resistant, and highly productive, this seedless variety is perfect for growers seeking both quality and yield.

Key Features:
• Maturity: 95-100 days total growth cycle; fruits mature about 32 days after fruit set.
• Fruit Size & Shape: High-round fruits weighing 6-8 kg each.
• Rind & Flesh: Dark jade-green rind with faint stripes; firm, juicy red flesh.
• Sugar Content: Up to 12° Brix, ensuring a sweet and refreshing taste.
• Seedless Variety: Smooth eating experience with no mature seeds.
• Yield: High yield potential of up to 4,500 kg per acre under proper management.
• Adaptability: Performs well across suitable climates with strong disease resistance.

Cultivation Guidelines:
• Seed Preparation: Soak seeds in clean water for 6-8 hours; use shell-cracking and high-temperature sprouting at 30-33°C to enhance germination.
• Seedling Stage: Optimal nursery temperature 28-30°C for strong seedling growth.
• Grafting: Recommended grafting onto V90 rootstock for better resistance, larger fruit, and higher yields.
• Planting Density: 500-550 plants per mu (~7,500-8,200 plants per hectare); row spacing 2 m × 0.6 m.
• Pruning & Pollination: Three-vine training; set fruit on the 3rd female flower of the main vine or the 2nd on the lateral vine. Pollinate with diploid watermelon pollen in the morning.
• Fertilization & Irrigation: Apply ample organic base fertilizer; strictly control water and fertilizer before fruit setting, then enhance management after fruit stabilization.
• Pest & Disease Management: Monitor regularly and apply integrated pest management for optimal growth.

Why Choose 'Obsidian Sweet':
• Elegant Appearance: Striking dark rind with vibrant red interior.
• Premium Quality: Sweet, crisp, seedless flesh perfect for fresh eating.
• Commercial Value: Excellent storage and transport tolerance, high yield, and strong market demand.
• Grower-Friendly: Resistant, adaptable, and high performing across regions.