One of the last autumn wildflowers left standing is the tough cookie yarrow, Achillea millefolium. I wish it were a cookie, because then I would eat it, yum yum. As it is, I don’t put crazy plants in my mouth.
This plant is sometimes called common yarrow or western yarrow, but as there are several subspecies it may be difficult to determine between them. One variety is still hanging on in my back yard, with its ferny leaves and numerous white (sometimes pinkish) ray flower with yellowish central disks.
This wildflower grows throughout the U.S. (it can be found in every state) in a wide range of environments and elevations from spring through fall. In Wyoming, it can be found anywhere from 4,600 to 11,000 feet (according to the U.S. Forest Service). Incidentally, the lowest point in Wyoming is the Belle Fourche River near the South Dakota border, at 3,101 feet, and the highest is Gannett Peak in the west at 13,809 feet. So yarrow fills most of Wyoming nicely.
It’s good to have such a consistent friend, even if it does lack tasty snack potential. You could use it as a poultice to staunch a bloody wound, though, so, bonus points there.