WEll, I am glad to hear about not overhead watering. I grow several Butia varieties here in upstate SC zone 7b/8a. I overhead water always and lots in the summer. I have not had rot yet, but this is good to know.I also have Brahea armata(yes in this northerly zone). I grow Trachycarpus , Sabal palmetto and a few Butias from seed for sale. I have a few thousand Trachycarpus. They are becoming very prolific around here now, being sold in box stores, so I can really not compete. Not fair lol.