For those who love patio tomatoes, take an empty wine bottle, fill it with water and a little bit of soluble plant food then shove the bottle spout down deep into the tomato pot, not so close to the root, though. This helps hydrate your plant as well as feed it, since tomatoes are heavy feeders. I get the most productive tomato plants this way. Of course you'll still water, but if you're in a drier climate, or like me, forget to water, this helps keep the soil moist, and the plant is not too stressed.