Jane, Thanks for correcting the end of the name of that Acis species. I didn't look it up for accuracy and unlike you and Jim McKenney don't have the language background to know which endings need to be changed. I've never tried L. vernum. It was L. aestivum that is successful with me. Maybe Acis autumnalis doesn't like redwood roots since it was in the shade of my trees I planted it? Mary Sue