And low and behold, within 10 minutes of posting, I got 2 people answering it, and 1 with a link! I am excited, because I want to use it to edge a sidewalk that runs from our driveway, along the side of the house, and up to the front of the house. I think it'd be a really pretty edge flower.
Anyway, it's called Silver Lamium, for those who also wanted to know. Here's a link to a page where it can be purchased:
http://www.bluestoneperennials.com/b/bp/LAPDP.html
And here's another picture of it, for those who are interested.


Comments: 18
Thanks for the help, everyone, and the comments. I'm hoping that I can find this plant at the nursery near us. I want to do the edging (or start it) this summer, so it will fill in a lot over the next year. :)