Anise hyssop (Agastache foeniculum) is a midwestern native that can reach a height of 4 feet with a spread of 3 feet. It blooms from June through September with lavender flower spikes that attract hummingbirds and butterflies; the seeds are attractive to birds. Anise hyssop is not fussy about soil types or conditions, as long as it is well-drained. It will tolerate partial shade but does best in full sun. The crushed leaves smell of licorice.