Reclaimed empty lot's and urban farms/gardens

Anyone familiar with these.

They beat blight that's for sure but are they usually in lots that are owned by the city. I see on six figure lots routinely.

Also the fruit an veggies, can I grab me a fresh onion for my burger?

Also do poppy plants grown well in Nola? Prettty sure one ljytlr fsfk has about a bedroom sized area of him some.poppy bulbs with a couple flowers.