Hi! Over the past few years I have boughten several Parade mini roses. I know they are quite hardy, as they come up bigger and more beautiful in my garden each year. I would like to know, are the Kordana series mini-roses equally as hardy as the Parade? I just bought two at the grocery store, and saw several more there that I liked; I want to make sure that these will do well before I go and buy any more. Thanks in advance!

CMK