Cannas add energy and excitement wherever they’re planted. These lush, tropical plants have big glossy leaves and exotic-looking flowers that are loved by hummingbirds. Cannas come on strong in late summer and fall when most annuals and perennials are starting to fade. Their bold foliage and brilliantly colored flower spikes keep gardens looking great right until frost. Cannas can be used to create a living hedge to define an entrance, hide an unwanted view or divide one garden area from …