All Sweet Watermelon Guide

All Sweet watermelon is an heirloom favorite known for its sweet flavor and great texture!

TO SOW

Watermelon grows best after last frost date in temperatures between 65°F-95°F. They do great in containers and small gardens. Bank on Seeds recommends direct seeding.

If Direct Seeding

  • Direct seed outside 2-3 weeks after last frost date; or
  • Direct seed into a container 24 inches deep and 16 inches wide (half barrel) anytime of the year. It can be placed outside when the temperature is between 60°F-95°F; or

If Transplanting

Begin the growing season early and start the watermelon seeds indoors in trays or pods 2 weeks before the last frost date. Germination is best and fastest between 75°F-85°F. It can be transplanted outside 5 weeks later.

Sow seeds ½ -1 inch deep and an 24-36 inches apart with rows spaced 60 inches apart. Germination will take 5-14 days.

TO GROW

All Sweet watermelon likes well-draining sandy soil free of weeds and amended with plenty of compost. They also love full sun and plenty of watering when it is young and establishing. Water when the top 2-3 inches of soil are dry. Let dry between watering but do not let it sit dry overnight. Avoid watering from above the plant to deter rot and fungal diseases.

Use compost when planting the watermelon but 5-10-5 fertilizer can be applied when the plant starts to flower. Mulch can be applied to retain moisture and deter weeds.

TO REAP

All Sweet watermelons are full grown in 90 days. They are cold, crack, and drought resistant. Cut the stem close to the watermelon when they reach desired size (keep in mind this is a smaller variety). You can also tell they’re ready for picking when the tendrils nearest to the fruit are drying or the ground below turns yellow. Watermelon does not continue ripening once picked. Chilling before serving is recommended.

PESTS/DISEASES

Resistant to fusarium wilt and anthracnose

Aphids, leaf miners, borer, cucumber beetles – handpick or spray off, neem oil, row cover or plant collar, insecticidal soap

Anthracnose, wilt, mosaic virus, mildew, blossom end rot, leaf spot – crop rotation, ensure enough air flow, keep free of debris and weeds

*Companion plant watermelon with bush beans, peas, nasturtiums, marigolds, and borage. Avoid planting with cabbage, lettuce, cauliflower, and potatoes.*


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