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I read that a single tomato plant can need up to 4 gallons of water a week in a pot. That seems like a lot for a balcony setup.
I was looking at a gardening guide from the county extension office online last night, and it said that for container growing, a full sized tomato plant might need that much, especially when it's fruiting in the heat. My balcony only gets about 6 hours of direct sun, and I've been watering my two plants maybe a gallon each per week. Now I'm worried I'm under watering them, but giving them that much seems like it would just run right out the bottom of my 5 gallon fabric pots. Has anyone actually measured their water for pots this size? Is the guide overstating it for smaller spaces?
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