I have 3 things that are bad for hostas: pure sand soil, trees with invasive roots and voles. Still I love big hostas so I grow them all in pots. I've been ordering them the last few years from Gilbert H. Wild. They switched to potted plants a couple of years ago so named varieties are now small where they used to be very large, but varities increased. I take advantage of their giant hosta offer each year plus ordering their hosta by the handful ten pack (each with 5 unnamed varities which doesn't bother me) which in the spring are still bare root and with 3 or 4 eyes, plus always more than 10. This year's are up and looking good. Anyway, they seem to do great in pots. I'll post some photos when I'm using the computer rather than IPad.