Watercress (Nasturtium officinale) Watercress (Nasturtium officinale) is one of the oldest plants known to man.. A Greek proverb went "eat cress and gain more wit" because it was thought to be a brain stimulant. Watercress has been used not only to sharpen mental acuity, but as an...

Oh, the Variety! The plant kingdom is much more diverse than most people think. Many people just assume, well, they're all green and leafy-what's the difference? There are many differences in the plant kingdom, like reproduction methods, structural individuality, and locations. ...