Wood sorrel has been eaten by humans for millennia. In Dr. James Duke's "Handbook of Edible Weeds," he notes that the Kiowa Indian tribe chewed wood sorrel to alleviate thirst on long trips, that the Potawatomi Indians cooked it with sugar to make a dessert, the Algonquin Indians considered it an aphrodisiac, the Cherokee tribe ate wood sorrel to alleviate mouth sores and a sore throat, and the Iroquois ate wood sorrel to help with cramps, fever and nausea.
Harvesting and Using Dandelion Roots - Dandelion roots are best harvested from late fall through early spring, when the plant is dormant and has stored up energy in the root. For medicinal use, most sources say fall harvest is best. This is because the levels of inulin (insoluble fiber) are higher and the fructose levels are lower.
Lambsquarters, pigweed, goosefoot: METHOD OF PREPARATION: Young leaves raw, older leaves sweated or boiled, seeds after soaking overnight and rinsed well to remove saponins on surface. Chenopodium is a nitrogen holding plant and high in oxalic acid. Best avoided by those with kidney stones, gout or related issues. Seed is 49% carbohydrate, 16% protein, and 5.88% ash. Water the seeds are soaked in can be used as soap. - via Green Deane on Eat The Weeds