UK, don't want to bump this down, but have an observation. I was googling "tetraploid hosta" and guess what showed up ALREADY, just 9 hours after you posted this, your entry was indexed in Google. Fantastic coverage for GWeb! Maybe just for the Hosta Forum.

Here we sit chatting away, and there is a set of BIG EARS broadcasting our conversations to the entire online community.

Oooooooooooooooooo. I hope it stabilizes for you. A beautiful plant in its own right, with thicker leaves. Oh my! Next year you might be rich and famous.

-Babka

I don't know your answer, but I'm going to bump this back up to the top so some of the smarter people will notice and reply. I know that in the daylily world, tetraploids only happen through genetic engineering with chemicals. Some smarter people will know if that's true of hosta. Nance