“Lettuce is great in a salad and lettuce plants are conducive to being grown this way, but what about other crops?”
Iceburg has little nutritional value. But Romaine is very high in Vitamin A/K and folate and to a lesser extent another dozen vitamins and minerals. That is all I buy unless a little Iceburg is needed for Burgers.
Still, I might use this method.
I grow my own lettuce, but where I’m at in southern Alabama, lettuce season is over by early May. Too dang hot.
I can start again in October, but I do not have lettuce for summer salads.
I could use this method to grow lettuce indoors but not at the article’s scale!
I never grow iceberg. Romaine’s, butter heads and loose leafs for me. Heading lettuce is too finicky and takes too long.