My husband has told me that in Texas there is a store where there are a kazillion kind of peppers and the employees must be fluent in two languages and neither need not to be English. Houston, for example, is a major city with many many immigrants, and a wise business understands that many non-English speakers who live there love those peppers. He said he often brought visitors there because it was fun to play “Name The Vegetable” since the produce department had global selections.
Today, the regular supermarket has selections that sometimes even a new cash register clerk does not recognize. This is a sad but perfect example of how many people no longer cook from scratch and so they do not know the appearance of “whole food” .
Recognizing a plant that is growing is the next step for many. For example, I am not a farmer. No green thumbs. I do everything I can to support them by buying locally from farmers I know to working with them to use surplus in our recipes so they can have another income stream with shelf-stable foods to offer to their customers. Farmers work hard, long days, no time off in season or if they have animals, all year. The LEAST any of us can do is support American farmers! But I grew up in suburbia and can recognize those few plants my dad grew in our garden.
Several years ago I wrote a blog for Huntingon, West Virginia’s Wild Ramp Market. Visiting a farm I snapped photos of plants in the garden and posted the pictures asking people to Name That Veggie. Many people were able to guess just about all of them. 
Today I saw something online that provided photos of some common things we eat (and some I personally have never seen let alone had a chance to taste) like coffee and capers. Check it out! See how many you can identify.
And after that, if you can try to eat one you’ve never tasted, let me know!