Watermelons

Extra sweet, crisp and delicious seedless melons are now the preferred types for consumers. Novelty fruit such as yellow watermelons are growing in popularity. 

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' Watermelon Waiver

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

First cultivated in northern Africa, the watermelon is a warm weather crop, requiring hot days and warm nights to fully mature, most particularly in the case of the larger varieties. Start seed indoors at 85°F. soil temperature, 3-4 weeks before setting out. When is a watermelon ripe? There are several schools of thought on this subject. Many believe that the surest way to know is when the fruit makes a dull, hollow sound when tapped. Others, however, recommend looking at the bottom surface of the fruit. When the “ground spot” has turned bright yellow, it’s ripe and ready for picking. Still others insist that the twisted tendril nearest the fruit must have turned brown.

Red fleshed watermelons are the traditional favorite, but many customers are excited to try yellow and orange fleshed melons, especially when you offer samples at your farm stand. While customers still purchase seeded watermelons, many have discovered the convenience and great taste of seedless melons. Fortunately, today’s seedless watermelons can be raised successfully in both the Northern and Southern parts of the country. Read and carefully follow the cultural directions on this page for best results.

Plant seeds 1/2-1" deep into Jiffy Pellets or sterile mix in Jiffy Pots with a soil temperature of 75-80º F. They should germinate in about a week if kept moderately moist. Set plants into the field after the threat of frost has passed. Hot Kaps, row covers or plastic tunnels will provide protection from low temperatures or damaging winds. Plastic Mulch can be used to maintain soil temperatures, retain soil moisture and control weeds in the row. All melons prefer sandy loam soil with a pH 6.0-6.8 and set the best yields when beehives are added to pollinate flowers. Maturity dates are from transplanting and should be used only for variety comparison.

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. Harris Seeds’ new high temperature heat mat can be a valuable tool, but some growers contract with a professional seedling grower to ensure consistent results. Most Northeastern growers raise seedless watermelons using plastic mulch, raised beds, and drip irrigation. IRT green plastic mulches (like Harris Seeds’ 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.

Harris Moran’s seedless watermelon program has produced vigorous varieties like Millionaire, Millenium, Troubador, and Gypsy that perform well in a less-than-ideal climates. In particular, Vagabond and Crunchy Red offer outstanding quality. They have the high level of sweetness that consumers expect, along with a crunchy texture.

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.

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.

Average Seed Count:

30 per packet; 500/oz.; 5,000-15,000/lb.