When you understand what tomatoes use water for, then it setting up a schedule for watering tomato plants makes sense.
Tomatoes are fast-growing, heavy-producing plants. They make a lot of food (sugars) in order to grow blossoms, develop fruit, and put out more branches. It takes a considerable amount of water to convert sunlight into energy for a tomato’s many branches and blossoms.
Here’s a quick review from high school biology class about what happens with water in a tomato plant. You can see why water is incredibly important to growing healthy tomatoes.
As a gardener, watering is one factor that you can control!
It’s simple when you know when, where and how to water them.
Water regularly. Consistent watering produces stronger plants and larger fruit. In the height of summer, water 2-3 times a week. (Rainfall counts.) Later when temperatures cool, scale back to once a week.
Water at the soil line. You’ll help build your tomato’s root system. Avoid overhead watering, which spreads diseases. That goes for watering tomatoes in pots, too.
Water slowly. Let water sink into the ground to help plants develop strong root systems. When the soil surrounding your tomato plant is moistened 6-8” deep, you’ll know you’ve done your job well. Try different tomato watering techniques to see what works for your garden.
Drip irrigation is one of the most effective ways to water tomatoes. You an use soaker hoses (also called drip hoses) which you can modify easily to fit your garden. Or do one better and install a drip irrigation system. They're not expensive -- and you will have watering set up for a whole season. You can use a water timer to make watering even more consistent and convenient.
|blossom-end rot||calcium imbalance caused by irregular watering: over watering followed by under-watering means calcium can’t be absorbed consistently into tomato|
|cracks, splits in fruit||irregular watering, over watering after drought: leads tomato skins to expand, contract, and split|
|small fruit, stunted growth, reduced production||irregular watering, under-watering: to stay cool, plants limit the exchange of oxygen and carbon dioxide through leaves, which slows growth|
|susceptibility to tomato fungus||overhead watering or watering at night, which allows fungi to rest on the leaves|
|tomato root rot, root loss||overwatering: soggy soil prevents roots from getting oxygen
light watering, sprinkling: roots reach to the surface in search of water
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By Kathy Widenhouse, award-winning writer and owner of Tomato Dirt, a leading online source for growing tomatoes and using them.
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