Joe Pye Weed is Eupatorium purpureum or Eutrochium fistulosum or angustifolium
Most botanists put Joe-Pye-Weeds in the genus Eutrochium but most of us know it as Eupatorium. I've never seen plants for sale locally, but the seeds are fairly easy to start. And, once started, the plants last for years. Plant them for the pollinators and for the sheer joy of their tall stemmed-beauty. Swallowtail Gardens sells both pink and white varieties - 50 seeds for $3. Jelitto Seeds is their source and Jelitto offers many more varieties at http://jelitto.com/index.php?lang=0&cl=search&searchparam=Eupatorium If Jelitto is new to you, be brave and order from them. They are the provider of seeds to many perennial growers including Pine Ridge Gardens . Kansas State Extension Service has a great online reference called "Farming a Few Acres of Herbs: An Herb Growers Handbook" at http://www.ksre.ksu.edu/ksherbs/farming_a_few_acres.htm . On The Deep Middle blog they agree, even in August in a drought, Joe Pye continues to fe...