Yellow Iron Weed is one of the tall, native beauties we have planted our gMuskogee garden to feed flying wildlife and to shelter crawling wildlife. We picked up ours from a plant sale someplace - it spreads with delight so many gardeners are happy to divide theirs for your garden, too.
If you enjoy learning about wildflowers, subscribe to the Arkansas newsletter, "Know Your Natives" at http://anps.org website where you will find the subscription form on the right side.
Here's their article about Yellow Iron Weed. Click here's a link to the article itself. Sid Vogelpohl's informative article and spectacular photos are worth congratulations. Tip of the Trowel to Sid!