Zone 5-8
Height:  1-2m [3-6ft]
Spread:  50cm [18in] or more; easily divided
Bloom:  August-September, airy yellow dainty flat-top flower clusters top tall stems making a dramatic statement in late gardens
Foliage:  Ferny, mid-green leaves
Light:  Part shade to full sun
Water:  Moderate
Soil:  Average, but responds well to rich soil; good drainage
Maintenance:  Cut dead stems at season's end
Garden location:  Back of perennial bed, supported by other tall plants; may require staking if in open, windy area; interesting in mid-zone, where transparency invites texture play