Whats wild,purple,not clover and grows inthe grass

Whats wild,purple,not clover and grows in the grass?

Today I cut the grass,you have to sometimes,but I like mine to look a bit on the wild side,thats why I like to see Daisys in it.But its not untill things have been chopped down a bit that you can see other things,So whats purple, wild,not clover and grows in the grass?