How to Plant a Watermelon With its Seeds


Watermelons are the fruit of summer, and their chilled fruit can provide juicy refreshment during a hot day. Instead of buying watermelon vines from a garden store or regional nursery, save yourself money by planting watermelon seeds. Give the watermelon seeds the basic care they need and you'll soon have rows of this hardy vine.

Step 1

Prepare the gardening site once the outdoor temperatures reach a daytime low of 70 degrees Fahrenheit and a minimum evening temperature of 65 degrees Fahrenheit, according to Ohio State University. Break up the soil to a depth of 6 to 8 inches and mix in 3 inches of compost followed by a single application of an all-purpose garden fertilizer, like a 5-5-10 or 10-10-10 product.

Step 2

Bury each watermelon seed an inch deep and 36 inches away from the next, according to the University of Illinois. If you're growing more than one row of the melons, separate the rows by approximately 10 feet.

Step 3

Water the garden two times a day, in the morning and evening, or as needed to keep the top 3 to 4 inches of soil moist. The watermelon seeds will usually germinate within three weeks.

Step 4

Reduce watering once the plants are 5 to 6 inches tall, after which the vines should only be watered when they show slight signs of drought stress like curling foliage or wilting. Watermelon plants have very deep root networks and rarely need watering unless it doesn't rain for extended periods of time, according to the University of Illinois.

Things You'll Need

  • Watermelon seeds
  • Spade
  • Compost
  • All-purpose fertilizer
  • Water


  • "Melons for the Passionate Grower"; Amy Goldman and Victor Schrager; 2002
  • University of Illinois: Watermelon
  • Ohio State University: Growing Watermelon in the Home Garden
Keywords: plant watermelon seeds, grow watermelon seeds, start watermelon seeds

About this Author

Josh Duvauchelle is an editor and journalist with more than 10 years' experience. His work has appeared in various magazines, including "Honolulu Magazine," which has more paid subscribers than any other magazine in Hawaii. He graduated with honors from Trinity Western University, holding a Bachelor of Arts in professional communications, and earned a certificate in applied leadership and public affairs from the Laurentian Leadership Centre.