'Sonic Bloom Pearl' reblooms reliably from spring until frost. Masses of white flowers have a pale pink flush, beautiful against the bright green leaves. A great complement to any color of perennial, and a striking contrast to blue conifers. This shrub grows 4-5' tall by 5-6' wide. May prune lightly after first heavy blooming in June, then again late fall. Hardy to zones 4-8.