Original miniature greenhouse you get when you use discarded car tires and plastic bottles. Last filled with water, with salt and are placed inside the tires. The sun, they accumulate heat and keep it cold at night, especially if in the middle to put another one the same bottle and cover everything with plastic, crushing it with a second lid. Bus in the future will serve in good stead: that appears the fruit will lean on her and not on the ground where they are prone to pests.