gani et se wrote:Make sure you know the difference between water hemlock and anything else. It can be confused with wild carrot, I hear.
Miner's lettuce is tasty in the early spring. Fern fiddleheads too, if you cook them.
Not really...the hemlocks and wild carrot are quite different. You just have to make sure that you NOTICE the differences.
Get a good foraging book or two for your area. Don't just identify the plant from the picture, although that's a good start. You have to read the description carefully and make sure the plant you are considering meets the description in every way. Hemlock has a smooth stem and often the stem is splotched with purple and smells rather foul. The wild carrot has a hairy stem and SMELLS like a carrot. There are other differences, but please don't try to make the plant fit the description you want because that could very well get you poisoned. If it has a smooth stem, it isn't a wild carrot, no matter how it looks otherwise. All foraging books have a good description of the plant for a reason.
You don't have to know all the plants there are to know...there are too many for most of us amateurs to know. You just have to absolutely know the one you hope to eat! That's easy...you already know more than you think. You know dandelions, mints, day lilies, sunflowers, clover, cattails, stinging nettle maybe, chicory maybe, maybe wild onions, acorns and other nuts, many fruits...a whole lot of foods already familiar to you. Start with them and learn how to prepare them so they taste good...some are truly delicious, others good but not so special, and others you won't want to eat except in a time of real emergency. But emergencies do happen, and it would be helpful if you've already prepared them once before the emergency so you don't have to try to remember what you've read. Then spread out from there, learning first of all the plants in your own yard and garden, and later take more far ranging field trips. Observe these plants through all the seasons so you can recognize them as they grow. Then you will be able to find them from then on. Plants don't move like animals do, if they are perennials they will be in about the same place every year. Look for those same plants later in a similar environment...most have definite preferences.
I go to amazon.com to read the descriptions of wild plant books and what the customers say about them. Often you can take a look at the pictures inside and table of contents. You might also want to see if the local library has them or can order them for you before you buy them. My favorite authors are Samuel Thayer, Linda Runyon, Euell Gibbons (for his humor and inspiration as well as good recipes but he has no field guides to identify plants), John Kallas, Darcy Williamson, and Linda Kershaw. There are many, many more, and some might be better for your area. If you live in New Mexico, no sense buying a book for the Eastern US., but many plants are fairly universal throughout the nation. Get a book with the best detailed pictures, preferably more than one photo each.
Wild plants may never make up your entire diet, but they can help fill it in. (One thing I like about the author, Linda Runyon, is that she does indeed live entirely on wild plants, and she lists far more plants than others do. You will still need a field guide though with better photos.) The economic picture is not encouraging at the national level, and we all see what is happening in Venezuela and other places. Food here may also be in short supply. You cannot rely on wild game to be available, as they would be quickly harvested. Learn the edible plants and you at least might survive!