I've added both centaurea cineraria dusty miller 'Colchester White' and artemisia stilleriana Wormwood 'Silver Brocade' to my plant list, because I have them both. In the centaurea entry I find only one example of Colchester White. In the artemisia entry I find the wormwood also referred to as duty miller, and a few photos of 'Colchester White' being shown as artemisia 'Silver Brocade'. Or at least that's what I think I'm seeing. The most sophisticated reference I have is the Sunset Western Garden Book, and it clearly shows the two genus (pl?) as separate plants altogether. I'm just not plant-educated enough to figure it out for myself. Should dusty miller be considered an artemisia as well as a centaurea? Can someone explain, please?
