Sgt. Volkin is the author of The Ultimate Basic Training Guidebook. The Ultimate Basic Training Guidebook is available (as of this writing)) in both book and e-book format at www.ultimatebasictrainingguidebook.com.
Step 1. Plant watermelon seed during spring once all danger of frost has passed in a location that receives full sunlight. Spread 3 inches of organic manure over the planting site and use a garden tiller to incorporate it into the soil to increase drainage and fertility.
In the first hole, plant a regular or diploid watermelon plant. In the next two holes, plant the seedless (or triploid) plant. Continue to alternate until all your plants are in the ground. Mark the planting orientation so you can distinguish your seedless watermelon from your regular watermelon once they mature. Your job is done! Now you know how to grow seedless watermelons.