Been learning to garden for a few years. This year I'm focusing on perennials, specifically heirloom species that were staple food crops prior to the modern agricultural era.

Turns out pretty much every non native plant in North America is a food crop. These plants often have superiour nutritional content as well as being more drought resistant, hardy, and ecologically sustainable.

A few to google.

Bambara 'Beans' - West African Staple for 300 years. All 9 amino acids. Bio available B12. Grows like legumes. Nitrogen fixer

Bamboo - Edible varieties have lots of fiber and potassium, some protein and low fat.

Old King Henry - Edible shoots like asparagus, edible leaves like spinach, edible grainlike seeds similar to quinoa

Skirret - clumping root vegetable that looks like carrots. Has higher carb density than carrots.

Comfrey - Top Tier mulch/fertilizer.

Clover - Edible nitrogen fixer

Dandelions - Edible nitrogen fixer

Cat Tails - Indigenous, all parts are edible, winter survival crop.

Ashitaba - apparently this plant has insane nutritional benefits for the body and originates from an Okinawan island with the longes average lifspan in the world.