Water stress resulting from a wet/dry/wet watering cycle can also lead to blossom-end rot, where the bottoms of the tomato fruits become discolored and sunken. The ideal amount of sunlight for tomato plants changes depending on the stage of growth. If growing indoors, tomato plants can grow without direct sunlight if you provide the right type of artificial light. Let’s be honest though – if you are doing all of the work that goes into a garden, do you want “some fruit” or “lots of fruit”? I hope you found this article helpful. you can learn all about how to harden off seedlings in my article here. In some cases, tomato plants can get too much sun, giving them too much of a good thing. Low or shade plants may need only a few hours of light a day while high or full sun plants need eight or more hours of light a day. Don’t settle for fewer tomatoes just because you didn’t choose a sunny spot! Staying attentive to the signs of sun and heat stress and treating the problem promptly can keep your tomatoes productive through the hot, sunny days of summer. In that case, you can use an arbor, trellis, or pergola instead. perhaps too much sun, which can burn the leaves, and too much water which causes the wilting...also, if you use miracle grow, make sure its organic since theres no chemicals in it. Mulching and watering properly won't stop blossom drop, although it will allow the plants to resume flowering and production immediately once temperatures drop below 95 degrees. © Copyright 2020 Hearst Communications, Inc. Avoid pruning out too much foliage if your garden receives intense sunlight. May 25, 2016 at 9:23 pm. According to the University of New Hampshire Extension, tomato plants grow best when they get full sun for most of the day. Finally, avoid over pruning your tomato plants! The sunscalded spots dry out and become tough, the skin turns white and papery, then the fruit begins to rot. “Shade accordingly.” Tomatoes thrive in full sun. Although tomato plants may still bear fruit with less sunlight, you may not get as many tomatoes as you were hoping for. Erecting sun protection near the tomato bed can prevent sunscald and other sun and heat problems. But morning is always the best time to water. A simple shade made by stretching thin white fabric between two stakes still allows sunlight through but protects from the most intense light, thus decreasing tomato plant sun damage. In some cases, too much sunlight will damage the fruit after it appears. Too much sun can kill them. Tomatoes can be overwintered in cooler areas by protecting plants against frost and freezing weather. Even if your fruit does form, it does not need light in order to ripen. If they are by a building, can you compensate for the extra … Don’t Let Your Tomato Plants Get Too Hot. So, do tomato plants need direct sunlight? The Ohio State University suggests that: “Tomatoes will not be as productive if they receive less than optimum sunlight exposure.”. Larger fruits that stay on the plants may resume ripening once temperatures cool. Let's solve your gardening problems, spend more time growing, and get the best harvest every year! head on over to my article where I explain them in more detail. Enjoy! This can happen to both young seedlings and established tomato plants. That way, you can easily move them into and out of the elements (sun, rain, wind). Tomato plants that receive too much sun and heat become stressed and fail to flower or drop the flowers and fruits. The name of the game is to find a way to provide natural or artificial shade for them. Check the soil and if it is dry to the depth of 1 to 2 inches, add water to the container until it runs from the bottom of the pot. Remember that you will always get a better harvest if your tomato plants get full sunlight. When days hit 85°F to 90°F and nights hover above 75°F, tomato flowers often fail to pollinate, then drop — which in turn puts new fruit production on hold. Of course, you cannot move a grounded plant around. Intense sunlight, especially in hot weather or on plants already experiencing stress, can cause problems, including sunscald on tomato leaves and fruits. The minimum recommended amount of sunlight for tomatoes is 6 hours. In short, hot weather can delay your tomato crop. However, they will grow better and produce more with at least some direct sunlight. Fortunately, deciding how to repair overwatered tomato plants is straightforward once you know the issue at hand. (Plus 7 Resistant Varieties). Too much sun may cause the soil to lose water quickly through evaporation, even if temperatures aren't too high. We tend to think of tomatoes as THE classic plants of summer, but most varieties suffer when daytime temps stay above 90° F. or nights don't drop below 75° F.