What is Eupatorium sachalinense
Eupatorium sachalinense or Yotsuba-hiyodori (scientific name: Eupatorium chinense L. var. sachalinense) is a perennial grass of the Asteraceae native to China. It is a variety of (Eupatorium makinoi)the joe-pye weed and flower is similar and leaves's shape are different. The leaves of the joe-pye weed grow a pair to a stem, however Eupatorium sachalinense(Yotsuba-hiyodori ) have small jaggedness on leaves and do the leaves of 4 pieces of verticillation to a stem.
It resembles Eupatorium japonicum , , commonly called as the thoroughwort , or Fujibakama,but as for the thoroughwort( Fujibakama, E. japonicum), a leaf does 3 incisions
General name: Eupatorium sachalinense, scientific name: Eupatorium chinense L. var. sachalinense, aka: Yptsuba hiyodori , origin: China, Habitat: Hokkaido-Shikoku ,plant: 100-200 cm heigh, leaf: oblong, petiole: no, leaf: serrated, bisexual flowers and scattered bunch flower diameter: 15-20 cm, Corolla: 5-flower consists of six cylindrical flower heads, tubular flowers: top 5 lobed and pistil pops out and then to crack 2 pistil tip, flower color: white, light reddish purple,
Long tube-shaped flowers 0.5-0.6 cm, flowering period: 10 months from August.