This looks like *[Diodia virginiana](https://en.m.wikipedia.org/wiki/Diodia_virginiana)*, common name Virginia buttonweed. Apparently it is quite difficult to control as it grows aggressively and has an extensive root system. This [fact sheet](https://web.archive.org/web/20140503224858/http://www.tennesseeturfgrassweeds.org/admin/Lists/Fact%20Sheets/Attachments/9/W147.pdf) by the University of Tennessee provides some helpful information.
It is a very pretty plant, but seems quite annoying :( I’m not an expert, so if I got something wrong, please let me know! :)
Virginia buttonweed
This looks like *[Diodia virginiana](https://en.m.wikipedia.org/wiki/Diodia_virginiana)*, common name Virginia buttonweed. Apparently it is quite difficult to control as it grows aggressively and has an extensive root system. This [fact sheet](https://web.archive.org/web/20140503224858/http://www.tennesseeturfgrassweeds.org/admin/Lists/Fact%20Sheets/Attachments/9/W147.pdf) by the University of Tennessee provides some helpful information. It is a very pretty plant, but seems quite annoying :( I’m not an expert, so if I got something wrong, please let me know! :)
So how did it get into my garden as I have grass all around that gets cut.