How do you make a seedles watermelon?

Answer 1

There is NOTHING that you can do to make it seedless. You have to buy a hybrid plant or seeds that says on the label that it is seedless. By the way, even "seedless" watermelon may have some white seeds in them (but none of the black seeds!).

Answer 2

They are hybrids....that is the seed for these plants is produced by crossing two known parents. The seed produces offspring that are sterile....seedless.