Chinese Knotweed

This one is going to be incredibly hard to beat, and it just so happens to be the first post.

This is the Chinese Knotweed, also known as Chinese Fleeceflower:

Nothing at all weird about that, right? How about this?

Or this?

The roots of Chinese Knotweed typically grow in these patterns that looks like perfect little people. Chinese Knoweed is used mostly as a substance in herbal medicines.