Cures for Tomato Plant Fungus

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Backyard tomatoes are a summer treat.
Image Credit: Will Heap/Dorling Kindersley RF/Getty Images

Tomatoes (​Solanum lycopersicum​) are easy to grow in your home garden, and the tomatoes always taste best when plucked fresh from the stem. The downside to growing tomatoes is that they can develop various types of fungi or diseases that may harm the plant, resulting in a smaller harvest. If you notice that your tomato plant has developed a disease, don't lose hope, as there is most likely a cure to get your tomato plant back to its healthy state.

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Signs of Tomato Plant Fungus

Tomato plants can develop diseases known as early blight, late blight and septoria leaf spot. You should be on the lookout for these diseases throughout the growing season. The disease that is easiest to spot right away would be the septoria leaf spot, as the visual signs are quite obvious. You will notice dark spots on the leaves, usually on the lower ones first, and these dark spots are usually settled in the middle of a yellow stain on the leaf.

Early blight and late blight are also easily noticeable, however, with late blight, you must check the undersides of the leaves. This is where the visual proof will be, as the underside of the leaf will have a white velvety appearance. Late blight can rapidly develop and cause your entire crop to die, so it must be taken care of as soon as it's discovered. Early blight resembles septoria leaf spot. The leaves develop rings that look like bulls-eye targets.

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Cures for Tomato Plant Fungus

Treating your plants is a necessary step if you notice any signs of fungal disease. You can choose the fungicide route; however, it is always advised to try home remedies first to avoid any type of chemical product coming into contact with the food that you will no doubt consume later. Luckily, creating a home remedy is rather simple and can be done with products already found in your home.

There is a quick concoction that can be made to fight and treat the fungus. This mixture can be applied often since there are no harsh chemicals. In 1 gallon of water, the U.S. Department of Agriculture advises mixing 1 tablespoon of baking soda, 1 teaspoon of vegetable oil and a bit of soap. Fill a spray bottle with the mixture and liberally apply it to the leaves to treat any visible fungus. Spray the mixture onto the plant as often as desired to help treat the disease as well as ward off any future diseases.

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Preventive Measures to Take

There are ways you can help avoid diseases in your plants, and prevention is accomplished by the way you garden and care for your tomato plants. Many may not know this, but it is best to water your tomato plants at the base of the plant since water that remains on the leaves is a factor in the development of the above-mentioned diseases.

Watering with a sprinkler system or from the top is not a bad way to care for your plants. However, if you choose this watering method, then it is best to water in the morning so that the tomato plants have time to dry their leaves throughout the day, ridding the leaves of any bacteria that might be in the water. If you notice any initial signs of disease, treat the plant and all plants as a preventive measure. Remove any leaves or even entire plants that show symptoms so they do not infect the surrounding foliage.

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Taking on the role of the household's 'handyman' was a natural path for me. Watching my dad as a child be able to fix anything made me want to be just like him. Now with a toolbox of my own I tackle any task that my home throws my way. If the task can be accomplished with my own two hands, I have never been the type to hire someone else to do it. There is nothing more satisfying than staring at your completed project while you brush some dirt from your hands.