Seeds from Joe Pye Ivory Towers or Eupatorium fistulosum f. albidum. New form with ivory white flowers on stems nearly as long as its scientific name! Actually it grows to 6ft approx tall and flowers late summer into autumn. Flowering the first year from seed if sown early, but not reaching its eventual height of 6½ ft. , this architectural and eye catching plant bears generously clusters of ivory-white blooms which are long-lasting and beloved by butterflies. 5 to 6 ft. Zones 4-8.