Dramatic and tall, blazing star (Liatris) has showy flower spikes filled with vibrant purple blooms, says Phillips. They have a pretty lengthy blooming period, from mid-summer to the fall, and are both heat and drought-tolerant. "They're ideal for the back of sunny beds, adding vertical dimension," Phillips says. Blazing star also attracts lots of pollinators, like butterflies, bees, and hummingbirds, providing a nectar source for them in the summer, while its seedheads provide food for birds in the winter.