I’m in zone 6 and have had red spider lilies in my garden for more than 25 years, never dig them up, they seem to thrive under my Oak
trees among hostas and other shade to semi shade plants. They’re among the last blooms of the fall for me and a welcome brilliant splash of color as everything else contemplates hibernation. They’re on the south side of my house so perhaps protected
enough to survive our sometimes brutal winters.