For years, I coveted this late spring flowering daisy that I saw in gardens around my neighborhood. The name was difficult to find because it is not sold in garden centers. But I finally found it is a weed/wildflower called an “Oxeye Daisy”…with most opinions falling on the weed side. I got my own clump two years ago by scavenging it from atop a pile of parkway plants dislodged by road construction. This is the first year it looks robust. As I researched it more recently, I confess to having a few second thoughts about its invasiveness. Then again, I’ve struggled with many an invasive perennial that I purchased from a legitimate garden center. All new plants need watching, not just this.
Cait's Garden 
I like these neat little mounds in my flowerbeds. They don’t take over the garden like lilies of the valley but you never know where they will show up. I mainly try to keep them out of the lawn.