Skyscraper: tall spikes of pink flowers; grows 14 to 28 inches tall. Black & Blue: true blue flowers on dark green stems; grows 42 to 48 inches tall.

Hollyhock (Alcea rosea) is a fitting rival to larkspur when it comes to candidates for a flower garden. Hollyhock flowers, growing up to six inches across, resemble those of hibiscus, a mallow ...

It's possible to confuse the tall larkspur with monkshood, but close examination can clear up any misunderstandings. Tall larkspur has a hollow stem and no hood on the flower.

Scientists from the University of Edinburgh and the University of Calgary, Canada, studied the flights of bumble bees as they collected nectar from wild tall larkspur flowers in Alberta, Canada.