Yarrow - Foods & Nutrition
ref: 120703 - http://www.offthegridnews.com/2012/06/25/mother-natures-first-aid-kit-10-backyard-plants-for-first-aid-and-general-wellness/
Yarrow is easily recognized, having thick stems, soft fern-like leaves, and white clusters of flowers. The cultivated version has bright pink flowers. Historically, yarrow has been used topically on wounds, having the ability to make blood clot faster. It also helps wounds to heal, due to the presence of azulene and its anti-inflammatory properties. The amount of azulene varies from plant to plant and with the time of year that the plant is harvested (something to be aware of when picking a plant for medical use). A third use is to reduce fevers and for pain relief, due to the presence of salicylic acid (the active ingredient in aspirin).
Use caution with this herb if you or the person you are treating is pregnant, as the plant can act as an abortifacient. The flip side of this coin is that yarrow can be helpful for other womanly complaints.
This is a mere sampling of the plants available to us for treating our ailments and improving general health. I would like to encourage you to read further and educate yourself on the uses of the plants around us. At the very least, pick up a book on herbal healing to have on hand for reference in case modern medicinals are not available to you sometime in the future.