Genus: Campanula persicifolia Zones: 3-7 Bloom time: June; then six weeks later. To prune: Snip spent flowers promptly, without removing developing buds. Good to know: In hot regions, this one fares best in partial shade.
Most hydrangeas bloom from midsummer to fall, making them ideal partners for mixed flower borders. In this garden, a large 'Annabelle' hydrangea anchors a border packed with perennials and annuals. Other flowers here include begonia, sweet alyssum, Oxalis, phlox, sedum, Lythrum, Torenia, and marigold.