Fleabane grows well in rocky and full sun spots, usually found along tracks or in ditches. It is hardy to Zone 2 in Canada so that's pretty darn hardy for -35 weather. There are medicinal uses for this plant however the tincture that is made from the flower in use for kidney problems is so bitter that there are probably better choices if you have them.
The Cherokee used this plant by using the dried stalk of the fleabane when starting a friction fire. They called this plant "firemaker".
Perhaps the reason it has "flea" in its name is that Starlings would line their bird's nests with fleabane to keep mites away. Also, people in the past mixed the dry flower with bedstraw to keep bugs out of their mattresses.
Personally, I don't like bitter tinctures...I don't have a nest to line or fleas to get rid of in my mattress so my preference is to use it in wild flower bouquets for my bedside table. It reminds me that small can be mighty.