Smallish plant

Smallish plant

Observation - Smallish plant. Description: This is about 30-40cm across. It could be a weed but has grown where I scattered wildflower mix last spring so I'd like to know if I should keep it.

This is about 30-40cm across. It could be a weed but has grown where I scattered wildflower mix last spring so I'd like to know if I should keep it.