Black Diamond Watermelon
Black Diamond Watermelon is a classic heirloom variety known for its large size, deep green rind, and exceptionally sweet, juicy red flesh. A longtime favorite for backyard gardens and roadside stands, it delivers impressive yields and old-fashioned summer flavor.
Type: Heirloom / Open-Pollinated
Days to Maturity: 85–95 days
Growth Habit: Vining; 6–10 foot runners
Plant Details:
Plants produce large, round to slightly oblong melons averaging 30–50 pounds with a dark green, almost black rind. The bright red flesh is firm, crisp, and loaded with sweetness. Vigorous vines require ample space to spread and perform best in full sun.
Flavor & Use:
Very sweet, juicy, and refreshing. Perfect for slicing, summer gatherings, fresh juice, and chilled desserts.
Growing Tips:
Direct sow after danger of frost when soil temperatures reach at least 70°F. Plant seeds 1 inch deep in hills spaced 4–6 feet apart, allowing plenty of room for vines to run. Keep soil consistently moist during fruit development and harvest when the underside turns creamy yellow and the rind resists scratching.
A bold, old-time watermelon variety delivering massive fruits and classic summertime sweetness.