Tunnel farming helps South Dakota farmers extend growing season by up to 4 months

[hunter]

3. Here's a project using high tunnels in California:

Could empty lots be growing food, economic opportunity?

The vacant lots around your neighborhood could be growing fruits and vegetables and making local produce more accessible – while reducing energy needed to transport and distribute the food. Could turning those empty lots into small farms also become opportunities for economic development?

To answer this question, a team of researchers from University of California Cooperative Extension in San Diego County are investigating the economic feasibility of growing high-value specialty crops in urban settings like vacant lots. The project – led by Eric Middleton, UCCE integrated pest management advisor for San Diego, Orange and Los Angeles counties – is currently in progress at The Flower Fields in Carlsbad, a seasonal attraction for locals and tourists.

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https://ucanr.edu/blog/food-blog/article/could-empty-lots-be-growing-food-economic-opportunity

I live in an agricultural community and commonly see these used for growing cane berries.

They are also used by commercial cannabis growers in many places.