A reference for unusual edible plants — fruits, nuts and wild cultivars — indexed by the coldest hardiness zone each will tolerate.
Zones follow the USDA scale. The range shown is where a species can be expected to survive winter, which is not the same as where it will ripen a crop — jujube and pomegranate are hardy well beyond the point where summers are warm enough to produce fruit. Shelter, drainage and a warm wall routinely buy a zone; exposure and wet soil lose one.
Compiled from published horticultural references and cross-checked against Plants of the World Online for accepted botanical names. Nothing here is a substitute for a local nursery who knows your ground.
Each species lists nurseries known to carry it. Links go to that nursery's own search results rather than a specific product, because plant stock is seasonal and product pages come and go. No prices or stock levels are tracked. Some links may be affiliate links.
If something here is wrong, tell me and I will fix it.