Verbena bonariensis (aka the plant with these gorgeous purple blooms) is ok for bumblebees, but really comes into its own when it comes to butterflies and hummingbird hawkmoths. It self seeds well and you can take cuttings in the autumn so it's the plant that keeps on giving! #homesfornature
Delphinium - Hummingbirds love delphinium, which blooms in early summer. Height for these perennials can average anywhere from 2 to 8 feet tall, depending on variety. Delphinium requires rich soil, and areas with relatively cool summers.