yarrow. Right now, it's blooming in full force in this part of Nova Scotia. As a kid, I would pick it along the roadside, pull it apart, put the flowers in my hair - you know, all of those things that kids do.
Nature Guide to Atlantic Canada. It's concise, well-written, and is packed with fascinating information and detailed colour pictures. (No one is paying me for that plug - it's just a great book.) I can't wait to learn more about so many of the plants that I've grown up with but had no name for.