Spit the pits. Most fruit pits enclose a poisonous seed, so it's best to spit them out. Teach children to do so as well.
Remember: Any plant is poisonous to people who are allergic to it. That means, for example, if you're allergic to stone-bearing domestic fruits, you should consider chokecherries off-limits.
Observe the first-try protocol. When you have positively identified a new plant and its edible parts, take just a little taste and wait to see how you react before you dive in. Also, know that some plants that are perfectly fine in reasonable amounts can cause problems in people who gorge on them.
Eat wild foods only when they're in season. Know which time of year a plant is edible and eat it only then.
Follow the rules. It is illegal to pick plants in some state and national parks.
Dayna Macy is Yoga Journal's communications director.