Mammoth Mum Collection - Spring Hill's Hardy Mammoth Mum, a truly perennial mum that can withstand temperatures as cold as -30°F and comes back bigger and better each year! Butterflies love their perfect cushion shape and hundreds of beautiful, brightly colored flowers. Plant them in full sun to partial shade, either individually or as a hedge. They're hardy in warm climates (zone 9) or cold (zone 3), and are so easy to take care of - no pinching, pruning or deadheading required!
Pieris japonica 'Flaming Silver' The other two near the Kerria are Pieris - I wasn't certain. Not sure which cultivars you have, but it looked like they were happy were they were. Not suggesting you move them, just thought you might want the name.