I have some also, including a tiny yellow one. I was so thrilled to have them survive here (Alaska) that I just make sure they spread seed. I bought several varieties a year or so ago, but most didn't survive. Maybe wrong spot. I keep trying to add to the tiny space they have done well in. Morning sun, then shade from the house, until last afternoon. I have primroses (tiny rock garden plants) at the other end of a 4' x 18" bed, curved around a large rock.
