Me three. I love them and did manage to get them to over winter one time. Then they died. I was so disappointed. I think my soil is too heavy. I should devote a bed to them and amend the soil to lighten it up. I don't know if mulching in the fall would help or hurt. It might rot under the mulch in the spring. But there are so many other beautiful flowers that do grow that I won't lose sleep over these.
