Black Diamond watermelon (Citrullus lanatus) is a variety of watermelon that is known for its large size, its sweet, juicy red flesh, and its black rind. The fruit can grow up to 30-35 lbs, and it's considered one of the largest watermelon varieties. This variety is known for its high yield and its resistance to common watermelon pests and diseases.
To grow Black Diamond watermelon, you will need:
Well-drained, fertile soil
Watermelon seeds or seedlings
Sow the seeds in the spring, after the last frost date, or start the seeds indoors about 4-6 weeks before the last frost.
Transplant seedlings to the garden after all danger of frost has passed and the soil has warmed up. Space the plants about 6-8 feet apart.
Water the watermelon regularly, keeping the soil consistently moist but not waterlogged.
Fertilize the watermelon with a balanced fertilizer every 4-6 weeks.
Provide support for the watermelon as they grow, such as a trellis or a cage, to keep them off the ground and prevent rotting.
Harvest the watermelon when the fruit is fully ripe, and the tendrils near the stem have turned brown.
Start seeds indoors or sow seed directly into the ground after the last frost date
Transplant seedlings to the garden or direct-sow seeds into the garden
Water the watermelon regularly, keep the soil consistently moist
Fertilize every 4-6 weeks with a balanced fertilizer
Provide support for the watermelon
Harvest the watermelon when the fruit is fully ripe, and the tendrils near the stem have turned brown
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