I have been growing Spacecoast Seashells in my South Western Ontario Canada garden for the last 3 years . I love the bloom but I can't say this one is a prolific bloomer or even a prolific grower. We had loads of rain late last winter and the water stayed on the surface for weeks and we went through many cycles of freeze/thaw. It took a toll on the plant's increase but truth be told , I was surprised it even survived. We get little to no snow cover most winters so the fact that this plant survived all it was subjected to last year speaks to some kind of hardiness.
