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Charleston Gray Watermelon


Charleston Gray Watermelon is an heirloom with greenish-gray exterior and sweet, red center. Flesh is crisp and fiberless. Fruits average 30-35 lbs. Citrullus lanatus. 85 days to maturity.

Treatment: Untreated


Charleston Gray Watermelon is an heirloom that originated in Charleston, South Carolina. Fruits are oblong and average 30-35 lbs. Vines are long and need plenty of room to grow. Charleston Gray Watermelon has a greenish-gray exterior and a bright red interior that's crisp and fiberless. This is a great variety for home gardens and market stands.


Growing Information

Watermelons may be direct seeded or transplanted. For direct seeding, we recommend planting seeds every 12" along the intended row to ensure a good stand. Once plants emerge, thin plants to one every 2 feet. Watermelons can be susceptible to plant diseases if excess leaf moisture is present. As a result, we recommend using drip irrigation on watermelons to reduce leaf moisture and feed plants more effectively. During periods of heavy rainfall, using a fungicide like Liquid Copper can help to alleviate disease pressure as well.

Watermelons also perform well when transplanted. In early spring, we recommend transplanting to get a jump start on the growing season. Watermelon prefers warmer temperatures for seed to germinate. By transplanting, you can have plants in the ground before the soil temperature warms enough to direct seed. We recommend starting transplants 4-5 weeks before the desired outdoor planting date. Watermelon transplants grow great in our heavy-duty seed starting trays, where they develop a solid root ball with roots that are trained to grow downward. Plants are ready to go in the ground when they can be easily pulled from the cells in the seed starting tray. Watermelons are ready to harvest when the tendril near the fruit completely dries. The tendril can be found between the fruit stem and the fruit. It is usually curly and green, but will dry when fruits are ready to harvest.

Charleston Gray Watermelon Planting Information

Planting Method: direct seed or transplant

When to Plant: after last frost

Planting Depth: 1/2"

Seed Spacing: 24"

Row Spacing: 5-6'

Days to Maturity: 85

Disease Resistance: Anthracnose and Fusarium Wilt

Be sure to check out our Watermelon Growing Guide for more tips & tricks on successfully growing watermelons at home.

Customer Reviews

Based on 1 review
Lee Shirey

90 % germination. They started sprouting on day 6 after direct planting