giant hyssop

/ˌdʒaɪənt ˌhɪsəp/

Definitions of giant hyssop

1. noun

   any of a number of aromatic plants of the genus Agastache
   types:

   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

   type of:

   herb, herbaceous plant

   a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests