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Black Diamond Watermelon Seeds, 50+ Premium Heirloom Seeds, ON Sale!, (Isla's Garden Seeds), Non GMO, 85-90% Germination Rates, Highest Quality

3.6 out of 5 stars 11 ratings

Price: $7.99 FREE Shipping on your first order. Details & FREE Returns
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  • Fantastic addition to your home garden! Black Diamond Watermelon can grow to be 50 lbs. Some level of previous experience comes in handy when growing this plant. Ensure that you are aware of the soil, sun, ph and water requirements for this plant and keep an eye out for pests.
  • These watermelons are so perfect for your home garden! A must buy and try! Seeds are great for Planting in Garden or for storing in a seed safe for emergency.
  • Annual. 85 days. 6-12" height. 5-6' spacing. Produces nearly round 25 lb. average striped green watermelons with crimson flesh.
  • USDA Zones: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 Latin Name: Citrullus lanatus Type: Open Pollinated, Warm Season
  • For more of Isla's Garden Seed products, enter Isla's Garden Seeds into your search bar on Amazon! Please submit a 5 star review to help the continued success of our Garden Seed Company! Please post pictures of your plants and review us! These are high quality seeds, be sure to fully research proper germination instructions for optimal germination rates.

Frequently bought together

  • Black Diamond Watermelon Seeds, 50+ Premium Heirloom Seeds, ON Sale!, (Isla's Garden Seeds), Non GMO, 85-90% Germination Rates, Highest Quality
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  • (FWBD)~"BLACK DIAMOND/YELLOW FLESH" WATERMELON~Seeds!!!!~~~~~~Super Tasting!
Total price: $12.88
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Product description

Black Diamond Watermelon - In cool climates, watermelon seeds should be started indoors, but no sooner than a month before transplanting; plant three seeds per peat pot, 1/4" deep. Provide heat to keep the soil at least 80-85 degrees F. Cut off all but the strongest seedling as soon as true leaves appear, and transplant about a week after frost; put two or three plants in each hill with a 6-8' space in all directions. Gardeners in warm climates will be able to direct sow watermelons as soon as the soil temperature reaches at least 75 degrees F, planting six seeds per hill with 6-8' of space in all directions. Thin to the strongest two or three plants as soon as the seedlings appear. Watermelons should be planted in full sun and rich, loose soil. Young seedlings may benefit from black plastic to warm up the soil.


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3.6 out of 5 stars
3.6 out of 5
11 customer ratings
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Reviewed in the United States on May 25, 2020
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Reviewed in the United States on December 19, 2019
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Reviewed in the United States on July 22, 2018
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Reviewed in the United States on April 27, 2019
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