You can make a Baking Soda and Water Solution that will change the alkalinity of the leaf surface. Since blight is caused by a fungal disease you need to use a spray that can help prevent it’s spread to other parts of the plant. A layer of mulch will interrupt that process! Straw, woodchips, pine needles, leaves, and grass clippings are all good mulches to use around your tomatoes. When it rains or you water the droplets can bounce back on the leaves and introduce the diseases from the soil. As an added benefit reducing the suckers will help to make for larger tomatoes! Mulch to Prevent Fungal Diseasesįungus diseases can persist in the soil so adding a protective layer of mulch can help prevent the introduction of the fungus on your leaves. The suckers can create too much foliage which can contribute to poor air flow. If you have too many branches it will slow the evaporation of water that fungal diseases need to grow. Prune out the canopy of the plant and limit the suckers to help improve airflow.Essentially you open the lower are of the plant up so that it can dry out after watering and you make the environment less hospitable for fungal diseases. I talk in detail about doing this in this post: Pruning the Lower Limbs off of Tomato Plants. Clear the lower area of your plant of branches and leaves.There are 3 things you can do when pruning to make your plants less hospitable for fungal diseases like blight: Good pruning practices are the number one way to reduce and prevent it’s spread to healthy areas of your tomatoes. How do You Treat Early Blight on Tomatoes? It may even remind you of tree rings.Įarly blight is a fungal disease that can overwinter in plant material, compost, and the soil and when it rains or irrigation water splashes up on the plants and allows the blight to infect the plants. The brown spots resemble a “bull’s eye” pattern of circles. Early blight can be identified through brown spots on the lower leaves of your tomato plants. One very common problem that may appear on your tomato plants is early blight (Alternaria solani).
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