giant hyssop

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Noun1.giant hyssop - any of a number of aromatic plants of the genus Agastache
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
Agastache, genus Agastache - giant hyssop; Mexican hyssop
Agastache nepetoides, yellow giant hyssop - erect perennial with stout stems and yellow-green flowers; southern Canada and southeastern United States
Agastache foeniculum, anise hyssop - much-branched North American herb with an odor like fennel
Agastache mexicana, Mexican hyssop - erect perennial of Mexico having rose to crimson flowers
References in periodicals archive ?
Other blue bloomers you might want to try would include Veronica species, with dense arrays of blue flower spires; Geranium 'Johnson Blue' and other true geranium cultivars, whose flowers and foliage are more delicate and understated than the coarser and flashier ivy and zonal geraniums; bluebeard (Caryopteris incana), whose ethereal blue inflorescences surround the stem; butterfly flower (Clerodendron ugadense), so-named because of its flowers' exact resemblance to porcelain blue butterflies, antennae included; and 'Blue Fortune' giant hyssop (Agastache), with robust flower spikes reaching nearly a foot in length.
Her best bets include several varieties of giant hyssop (Agastache).
I have seen a blue garden that featured plumbago, lobelia, delphinium, Johnson's blue geranium, forget-me-not, caryopteris, blue bearded iris, veronica, giant hyssop (Agastache), Australian bluebell creeper (Sollya heterophylla) and ceanothus.