Here's a research video I cut together after fellow Boot Esteban and I found an enormous, currently-unidentified vegetable growing just outside the Library.
Thanks for watching, and enjoy your day...!
"We carry a new world here, in our hearts..." --Buenaventura Durruti
"Don't wish it were easier. Instead, wish you were better." --Jim Rohn
I think your theory of mutant cross pollination is very likely here. I get all kinds of weird brassicas popping up like cauliflower + purple sprouting broccoli, and my broadleaf mustard appears to either crossed with a purple cabbage or spontaneously thrown out a bronze-leafed strain (which is really nice to have so I've been saving seed from it).
I used to grow a lot of daikon in my cool-season garden in Tucson. When we had rainy winters, like a couple of years in the early '90s, they went nuts and the root grew as much up out of the ground as it did beneath the surface. I would harvest some that stood up to mid-thigh height when I pulled them and the tips were snapped off so I know there was still more in the ground.