On May 28th, a man named James Bryan planted 4 tomatoes around a garbage can with holes drilled in the bottom rim and a second row up about 10 inches. He buried the can to where the top holes were, around an inch above the ground and put in two shovels full of compost. He proceeded to pour water in the can every 2 days without watering the leaves. After less than a month and a half, these 4 plants grew 5 ft 4 inches, and were full with green tomatoes and more than a hundred sets of tomato blossoms.

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James Bryan said that on July 9th, after a week of very little rain and record high temps, the plants were full with tomatoes and blooms inside the cage. In order to grow the tomato plants, he used a 13 gallon kitchen garbage can, but later switched to using 5 gallon buckets because they are a lot easier and cheaper to find in quantities. But, if you provide each plant with 5 gallons of water per week, you could even use a larger can. For example, if you use a 5 gallon bucket to plant 2 tomato plants around it you fill the 5 gallon bucket 2 times a week. Or a 13 gallon can be filled twice yields 26 gallons, so you could plant up to 5 plants around it.
Mr. Bryan now also grows tomatoes for the market, and has a higher yield per plant than most other growers.

Source: makeyourlifehealthier