Seedless Watermelon

An extensive listing of some of the finest seedless watermelon varieties you can grow. Our seedless watermelon seed selection offers red, yellow or orange fleshed varieties to choose from.

REQUIRED SIGNED WATERMELON WAIVER: A completed watermelon waiver is required before your order can ship! Due to the potential liability of Watermelon Fruit Blotch (WFB), Gummy Stem Blight (GSB), Cucumber Green Mottle Mosaic Virus (CGMMV) and Anthracnose diseases with watermelon seed, we require a watermelon waiver form be signed and returned for all purchases of 1/4 lb. or 500 seeds or more of seeded varieties and for all purchases of seedless varieties and seedless pollinators. A new disclaimer must be signed each year. Signed disclaimers from previous years are not valid for the current sales year. No orders for watermelon seed will be accepted that originate from or ship to the state of South Carolina. If you do not send in the release with your order, the form will be mailed to you. If we do not receive the completed and signed release within 30 days, your order will be canceled from our system.

Download Harris Seeds/GardenTrends Watermelon Waiver

Return your form: E-mail customercare@gardentrends.com, FAX (877) 892-9197, or Mail (Harris Seeds, PO Box 24966, Rochester, NY 14624)

SEEDLESS WATERMELONS FOR NORTHERN GARDENERS
Although we think of watermelons as a Southern crop, they grow as easily as cantaloupe in the North, offer more consistent quality, and are increasingly sought out by consumers. It is critical to start seedless melons as transplants at high soil temperatures, as described here. A high temperature heat mat can be a valuable tool, but some growers contract with a professional seedling grower to ensure consistent results. Most Northeastern gardeners raise seedless watermelons using plastic mulch, raised beds, and drip irrigation. IRT green plastic mulches (like SRM Olive Mulch) are very beneficial in cooler or shorter growing seasons. Since watermelons are tropical plants, it’s best to transplant them after weather is warm, not just frost-free. Don’t forget bees; one hive per acre is the recommended minimum. Bee activity is adequate when one bee is present for every 100 blossoms between 6:00 and 10:00 am.

SEEDLESS WATERMELON CULTURE:
Germination:
Water a sterile seed starting mix and allow it to dry for 24-48 hours before seeding. Seeds need a soil temperature of at least 90°F for germination, so make sure media is heated before planting and maintains a 90°F temperature for 48-72 hours after seeding, or until germination begins. This soil temperature may be achieved in a germination room or by using our high-temperature heat mat. After germination begins, reduce soil temperature to 80°F and water only as needed for the first week. DO NOT OVER WATER! Once the seedlings are established, temperature and watering may be adjusted to achieve sturdy plants.

Pollination:
You will need to purchase a pollinator for use with the seedless varieties. We highly recommend that you use Side Kick or Accomplice for this purpose, as they flower early and continuously throughout the pollination period. To ensure proper pollination it is recommended that you plant one pollinator for every three seedless plants. Plant in the row with the seedless variety. Tests indicate that bees will tend to work up and down the row, rather than from one row to the next. Planting in this way will help to improve pollination, thus increasing yield potential. Please note: The use of bees, plastic mulch and drip irrigation are highly recommended. Seedless melons grown under stress will produce hard, dark colored seeds.