Identifying edible plants involves knowing the distinct features of each plant, such as the color, shape, and texture of their leaves, stems, and flowers. It's also important to know their growth habits and habitats. In some cases, time of year and seed or fruit characteristics can also be helpful. Some common edible weeds include dandelion, chickweed, and lamb's quarters. However, it's essential to ensure that you're not confusing these plants with toxic lookalikes. Consult a reputable plant identification guide, or even better, learn from an experienced forager or botanist.