I have 3 lovely variegated perennial wallflowers in my front garden that flower from spring right thru to autumn so I am guessing they will not seed. I have "googled" but can find nowhere that stocks them. I cannot remember where I got them from and would like more. Can anyone give me any clue as to where I might buy them or propogate them. I am new to the GW forum so this is my first post. Hopefully someone out there can held.