When is a plant an unwanted weed, and when is it deemed a precious herb? Dandelions are "weeds" when they stifle your prize blooms, but they are used for tea and homeopathic remedies. Arugula (Rocket), a bitter herb, is a popular, spicy ingredient in European salads. Lavender, a common sight in parts of France, is sought after for its its aroma and oils.

So before anyone next stifles a "weed", make sure it really is unwanted and useless. Don't be guilty of killing what the farmers painstakingly cultivate and plant! Crop-killers, be warned! Farmers know best!