See that. That is a mini watermelon. Special seeds? Nope, it is just a plain old watermelon vine grown in a container. In this case the container is an old plastic watering can that cracked at the bottom. I couldn't make myself throw it out, so it was given a second life as a container. The watermelon variety is not a small variety at all. It is Crimson Sweet. The seed package says the fruit can weigh up to 24 pounds. It is quite easy to stunt its growth, obviously.
This is the vine and the watering can. The little melons on the vine are ready, but they only have a couple of tablespoons of edible flesh. So what, it's fun. I will clean up the vines and give them a shot of fertilizer and compost. That should get them going again producing more little fruits. The vines are already blooming again.
This is a fun way to grow little melons if you don't have the space for sprawling vines.
Please forgive the messy deck in the background. I promise to go clean it up right now.