Black Diamond watermelon is a magnificent heirloom variety admired for its massive fruits, deep nearly black rind, and exceptionally sweet ruby-red flesh. The striking dark exterior creates a dramatic contrast against the vibrant juicy interior, making this classic watermelon one of the most visually stunning varieties grown in home gardens.
Slice into a fully ripened Black Diamond watermelon and discover crisp refreshing flesh bursting with rich sweetness and abundant juice. Every bite delivers cool refreshing flavor perfect for hot summer days, picnics, fresh desserts, fruit platters, and family gatherings. Beyond its incredible flavor, this variety is also highly hydrating and packed with valuable nutrients.
Growing Black Diamond watermelon is a rewarding experience for gardeners of all skill levels. Vigorous sprawling vines thrive in warm sunny conditions with fertile soil and regular watering, producing large glossy fruits that continue developing throughout the season. Watching the vines spread and mature into massive beautiful melons is one of the great pleasures of summer gardening.
Beautiful, refreshing, and wonderfully productive, Black Diamond watermelon remains one of the finest heirloom watermelon varieties for gardeners seeking enormous fruits, dependable harvests, and outstanding sweet flavor.
Black Diamond Watermelon Seed Details
- Quantity: 30 Seeds
- Plant Type: Heirloom Watermelon
- Fruit Exterior: Deep Near-Black Rind
- Flesh Color: Ruby Red
- Flavor: Exceptionally Sweet and Juicy
- Best Uses: Fresh Eating, Desserts, Fruit Platters, Summer Gatherings
- Seed Planting Depth: 1 Inch
- Germination Temperature: 75-80°F
- Days to Germination: 3-10 Days
- Row Spacing: 6 Feet
- Plant Spacing: 3 Feet
- 100' Row Yield: 55 Pounds
- Sun Requirements: Full Sun
- Harvest Time: Approximately 80 Days
- Special Features: Massive Fruits, Dark Rind, Sweet Ruby Flesh
How to Save Seeds
Watermelons readily cross-pollinate with other watermelon varieties, so isolation by approximately one-quarter mile is recommended for maintaining seed purity.
Allow fruits to fully ripen on the vine before harvesting seeds. Mature watermelons typically develop rich color, a dull rind finish, and a dry tendril near the fruit stem.
Once harvested, cut open the melon and scoop out the seeds from the ripe flesh. Rinse seeds thoroughly to remove pulp and sugars before drying.
Spread cleaned seeds out in a single layer and allow them to dry completely before storing in a cool dry location for future planting.