Found this in a local park. I believe it is garlic mustard. It does not have a square stem and has a long white tap root (I broke the bottom portion off). Could it be henbit deadnettle or blue/yellow violet?
I also think it is a viola; the purple stems help give it away. If it's garlic mustard, it should smell like garlic when you crush it.
Turns out it is garlic mustard. I was thinking viola as well. Of course I forgot to do the crush and smell test- that gave it way. Thanks Vienna.
Matt, I know this thread is solved, but my curiosity got the better of me so I did some googling and found photos that look like your garlic mustard on this site: http://www.yougrowgirl.com/2009/04/16/. Now that you know it's garlic mustard, see how much you can yank out of your local park! It's a terrible "alien invasive" that, alas, deer won't eat, and it prevents stuff they will eat from growing. Susan
When I read the original upload and the associated message, I was to write why not Garlic mustard?, Alliaria petiolata, very common in area of my research in Kashmir. Thanks it was so as confirmed ultimately.
Thanks for finding those pictures. I was worried when I couldn't find pictures or info that matched what I saw. I guess it is considered a "1st year plant" since it isn't growing upright yet. I will definitely get rid of some of it now.
Thanks also to growin and singhg for confirming!
Matt, you could notify Arlington County that you found the garlic mustard if you found it in a county park, and they might send volunteers to help eradicate it - see https://www.arlingtonva.us/Departments/ParksRecreation/scripts/parks/ParksRecreationScriptsParksInvasive.aspx. Fairfax County Park Authority has a website for use in reporting alien invasive plants; perhaps the Arlington County site has a similar link.