how much water do tomato plants need per day
Tomatoes in gardens have an advantage over container plants -- they can spread their roots out far and deep in search of water. Even so, the same rule of thumb about even soil moisture applies. Tomato plants need about 1 to 1 1/2 inches of water each week to fruit, according to Ohio State University. There's no need to measure, so long as you maintain an even soil moisture. At the beginning of the growing season, this may mean watering in the morning until the soil is thoroughly damp and remains damp all day.