• Black Diamond Watermelon Seed pack ideal for canada planting Pack de graines de pastèque Black Diamond idéal pour la plantation au Canada
  • sliced fresh Black Diamond Watermelons backyard ground Tranches de pastèques Black Diamond fraîches au sol d'arrière-cour
  • Black Diamond Watermelon Seed packaging dimensions Dimensions de l'emballage des graines de pastèque Black Diamond
  • Black Diamond Watermelon plant with its fruit Plante de pastèque Black Diamond avec ses fruits
  • sliced and displayed Black Diamond Watermelon outside Pastèque Black Diamond tranchée et exposée à l'extérieur
1 5

JNB Seed

Black Diamond Watermelon Seeds

Black Diamond Watermelon Seeds

$4.50 CAD
$4.50 CAD
Sale Sold out
Seed Count

Black Diamond watermelons are a sought-after late-season open-pollinated variety cherished by both home and market growers alike. With a resilient dark blue-green rind that is resistant to bruising, and a vibrant red flesh bursting with sweet and firm flavor, these melons are a true delight. Typically measuring around 35 centimeters in diameter and weighing approximately 18 kilograms, they are particularly favored as shipping melons in the Southern regions. These melons reach maturity in approximately 85 days, making them a reliable choice for growers seeking a bountiful harvest.

Heralded as the quintessential watermelon, Black Diamond heirloom melons hold a special place in the hearts of enthusiasts, especially in southern climates where they thrive. In the town of Luling, Texas, these watermelons take center stage at the annual "Watermelon Thump" festival, a beloved event celebrating the local watermelon industry. It's a testament to their popularity that Black Diamond watermelons consistently steal the show at this festival. In fact, a notable achievement was reached in 2005 when a Black Diamond melon grown by Texans Allen and Shane Watts weighed in at a record-breaking 37 kilograms, securing victory in the contest.

The robust history and enduring appeal of Black Diamond watermelons have solidified their status as an old favorite among growers and consumers alike. Their exceptional flavor, combined with their impressive size and resilience, have made them a staple in many gardens and markets. Whether enjoyed fresh on a hot summer day or used in culinary creations, Black Diamond watermelons continue to captivate with their unmistakable charm and taste.

From their resilient rind to their succulent flesh, Black Diamond watermelons embody the essence of quality and excellence. Their legacy extends far beyond mere fruit, serving as a symbol of tradition, community, and the enduring spirit of agriculture. With each harvest, growers and enthusiasts alike revel in the joy of cultivating and savoring these exceptional melons, ensuring that the legacy of Black Diamond watermelons continues to thrive for generations to come.

    How To Grow

    Sowing: In regions with cooler climates, it's advisable to start Black Diamond watermelon seeds indoors approximately one month before transplanting. Plant three seeds per peat pot, burying them 6 millimeters deep. Ensure the soil remains consistently warm, ideally between 27-29 degrees Celsius. Once true leaves emerge, retain only the strongest seedling and transplant it about a week after the last frost. Space two or three plants in each hill, allowing for 1.8-2.4 meters of space in all directions. Alternatively, gardeners in warmer climates can direct sow watermelon seeds once the soil temperature reaches at least 24 degrees Celsius. Plant six seeds per hill, thinning to the two or three strongest seedlings upon emergence. Black Diamond watermelon seeds thrive in full sun and nutrient-rich, well-draining soil. Using black plastic can help warm the soil for young seedlings.

    Growing: Apply a generous layer of mulch as soon as the vines begin to develop to suppress weeds and protect the melons from direct soil contact. Keep the soil consistently moist until fruit development begins, watering only if the soil becomes completely dry thereafter. Be vigilant for insect pests, which may pose a threat to the plants.

    Harvesting

    While various methods exist for determining watermelon ripeness, knowing the approximate mature size of the melon aids in gauging ripeness. One approach involves tapping the watermelon with your knuckles and listening for a dull thump rather than a hollow sound. Additionally, check the underside of the melon where it rests on the ground; ripe melons typically exhibit rich yellow skin in that area. Another indicator of ripeness is the tendril closest to the stem, which begins to brown as the melon ripens. Once harvested, watermelons can usually be stored for several weeks in a cool environment.

    Seed Saving

    Given that watermelons have the potential to cross with other varieties, isolation may be necessary to maintain genetic purity. Once the melon is ripe, the seeds will also be mature. Cut open the melon, extract the seeds, and wash them to remove any residual pulp. Allow the seeds to air dry for approximately one week before storing them in a cool location for up to four years.

    Extra Facts

    Planting Methods: Indoor, Outdoor
    Blooming Season: Spring
    Planting Season: Mid to Late Summer
    Latin Name/USDA Zones: Citrullus lanatus/ 4, 5, 6, 7, 8, 9, 10, 11
    Sunlight Required/ Height: Full Sun/ 60-90 cm
    Shelf Life After Test Date: The shelf life of Black Diamond Watermelon Seeds after the test date is approximately 2-3 years if stored properly. Keep them in a cool, dry place away from sunlight. While they may still germinate after this period, using them within the first year ensures the highest viability for successful cultivation. Regularly inspect for any signs of damage, maintaining optimal storage conditions for the best results in growing these delicious watermelons.
    Can I Grow Melon Seed Sprouts: Yes, you can grow melon seed sprouts. Soak melon seeds in water for a few hours. Plant them in a well-draining tray or container with moist soil. Keep them in a warm, sunny spot. Water regularly and watch for sprouting in about 4-7 days. Harvest when the sprouts are a few inches tall. Melon sprouts add a fresh, crunchy element to salads or sandwiches and are rich in nutrients. Enjoy the process of growing these nutritious sprouts at home!
    Seed Type: Non-GMO, Heirloom, Open-Pollinated
    Soil Type: Loam Soil

    View full details