Giant Green Hyssop!, green/yellow flowering Agastache, very tall, 4-6', hardy perennial in zone 5 or colder, great pollinator plant and holds interest late into the fall with its terrific seed heads, tolerates any soil, low maintenance, sun/part shade
Giant Green Hyssop!, green/yellow flowering Agastache, very tall, 4-6', hardy perennial in zone 5 or colder, great pollinator plant and holds interest late into the fall with its terrific seed heads, tolerates any soil, low maintenance, sun/part shade