asterrific volunteer

We have a lovely wildflower blooming under the pine tree out front.

Some kind of wild aster growing under the pine tree

I believe it’s a variety of aster, but I’m not sure which one. Most of those I’m familiar with have a yellow center, and this one is definitely purple/pink. As you can see in this photo, there are also a ton of weeds growing under there (including a very spiny-looking dandelion of some kind) and we’ve just sort of been ignoring that area. I’m happy to see this volunteer, though!

If anyone knows what this plant is actually named, I’d love to know!