Wild food is seasonal. The harvest season arrives when the crop is ready. If it's a productive year, there may be more than can be eaten before it goes bad. You can stretch the season through different methods of storing the plants, making them available for use even when they're out of season. Otherwise, you won't have another opportunity until next year. There are a number of methods that you can use to store wild foods, and the one you use will depend on what you're storing and the climate where you live.