Welcome to GW, nolabum! One suggestion before I offer a reply: we are better able to help you with your questions if you add your general area and your zone (as you will see after my name). Climate, soil, etc., can make a big difference in the answer to a problem.

Anyway -- looks like your little plant could be a young dead nettle (Lamium purpureum) but if you have one, you likely have a LOT of them. :-) It is very common in disturbed ground.
I can see that the leaves appear to be opposite; is the stem square? Lamium is a member of the mint family but has no minty odor.
I should think dead nettle would be blooming soon if not already in northern Louisiana (I assume that is what NOLA means!) and you may see fields of purple such as that in the picture at the link I have included below. It can be a real bugaboo to control, but with patience and persistence, it may be done!

Here is a link that might be useful: Dead nettle & henbit

Thanks weedlady - I took your advice and updated my profile. Thanks for the etiquette pointers!

The stalk was round if i remember correctly, and that was the only specimen I have come across. Looking at your link, and it looks like a good candidate.