Helenium 'Helena'

helenium sp sneezeweed helenium sp helenium immortal asteraceae perennial plant sneezeweeds helenium sp immortals asteraceae long lived plants multiannual plant multiannual plants long lasting plant long lasting plants long lived plant perennial plants perennials perennial compositae / sunflowers asterales order dicotyledon flowering plant spermatophyte flora compositae / asteraceae asterales dicotyledoneae angiospermae spermatophyta / phanerogamae tracheophyta embryophyta chlorobionta archaeplastida eukaryota growing cycle species particularity species