How Much Water Do My Tomato Plants Need?

Imagine having a successful, bountiful tomato harvest every season — juicy, red tomatoes ready for the kitchen.

The good news? You can! Tomato care isn’t hard.

When it comes to growing tomatoes in your organic vegetable garden, the secret is in the soil. Maintaining consistent soil moisture is crucial for a successful harvest.

When, and how frequently, you should water your tomato plants depends on the variety, size and location.

Start Your Seedlings

When starting tomatoes from seed, the soil can dry out quickly since seedlings are typically in small containers or trays. Check soil daily to ensure it has not dried out.

However, seedlings require very little water. Use a spray bottle to mist seedlings and keep just the top of the soil moist.

If the soil becomes too wet, move the seedlings to an area with increased air flow and hold off on watering again until needed. Never let seedlings sit in a puddle of water.

As seedlings begin to sprout and grow, they will need more water. If the soil in the tray dries in less than 24 hours, it might be time to move your seedlings to the garden or a larger container.

Growing in the Garden

When you plant tomatoes right in the ground, the roots can extend deep into the soil as they seek out water. Water newly planted tomatoes well to make sure soil is moist and ideal for growing.

Early in the growing season, watering plants daily in the morning. As temperatures increase, you might need to water tomato plants twice a day. Garden tomatoes typically require 1-2 inches of water a week.

Container Tomato Plants

Tomato plants grown in containers need more water than garden tomatoes. Soil in containers heats up faster which leads to more water evaporation.

A good rule of thumb for containers is to water until water runs freely from the bottom. Water in the morning and check the soil moisture levels again in the afternoon. If soil feels dry about 1 inch below the surface, it’s time to water again.

Keep Tomatoes Well Fed

Adding organic mulch to tomato plants reduces evaporation in the soil. That means less watering, so you can save time and resources.

Add Espoma’s organic Tomato-tone, a slow release premium plant food, for bigger, healthier roots that can withstand a little drought and excess heat.

There are many factors that affect how much water tomato plants need, such as weather conditions and the size and growth rate of the plant. Every plant is different! The best way to give your tomatoes the care they need is to closely monitor the plants and the soil moisture weather.