Agree that it is a Commelina but not sure about the species from these pics. C. communis has 1 clear or white petal. I can't see if the clear/white petal in these pics is single or split. Also compare to C. erecta.

I've got a whole field of them and every single one looks like this. All purple.

I often wondered what flowers ”Eric the half a bee” visited.

tj

OK, thanks. This reference calls out Commelina communis and the picture looks EXACTLY like what I have.

https://www.illinoiswildflowers.info/weeds/plants/asia_dayflower.htm

Well, maybe mine are an itsy bitsy more purplish. Close enough.

Commelina erecta, Whitemouth Dayflower also has a small whitish lower petal, but it's flowers are larger than C. communis. An easy way to tell if it's Commelina communis is it roots at the stem nodes, and Commelina erecta doesn't. The leaves are slightly different also, but if you have that many plants you can check to see if it's rooting at the nodes as it sprawls.

i walked by the ones ive been trying to kill for the last 22 years.. and thought to myself.. there really isnt a more sky blue flower around ... such stunning color on such a nightmare reseeding POS .. lol ...

it was high noon when i saw this.. on a clear blue sky day ... no clouds..

they do look more purplish at dusk ...

ken

C. communis has brown dots on the anthers, C. erecta does not. It's not about the exact shade of blue or purple but if you don't want to examine the defining characteristics, that's OK.