> There is a perfectly viable market of seeds and such for non-biolumenescent plants.

I don’t understand what you’re trying to argue, but the patent laws aren’t designed to patent generic, pre-existing plants like generic watermelon.

How is that crazy? That's how plants work.

This is not a natural plant though.

That's not really true for most popular high-performance varieties, most are hybrids and growing them from the harvested seed will lose the characteristics. That's why most commercial farmers buy from a supplier every year instead of saving seeds, and that's the reason for a viable market.

Commercial farmers also sign agreements to not plant harvested seeds. Monsanto has successfully sued several farmers for not complying with that contract.