The seedless watermelon plants are now up in our greenhouse. Seedless watermelons are strange, unatural kind of things. Seedless watermelons are a triploid plant - they have three sets of chromsomes. They are created by crossing a more standard diploid (2 sets of chromosomes) watermelon with a a tetraploid plant (having four sets of chromosomes), which itself was created by another crossing of two diploid plants. The seedless watermelon seeds are hard to germinate, needing special care for humidity and temperature. You have to plant a normal seeded watermelon to fertilize the seedless watermelon flowers so that they will produce fruit. That fruit will have few seeds, mostly soft and white that you can hardly notice when you eat. It’s convenient not to have to spit out seeds, but sometimes I wonder at the bother we go to for convenience! I even think the seeded watermelons have better flavor.