![]() ![]() Most of the methods for preventing early blight and Septoria leaf spot infections will also help prevent late blight infections. Late blight can infect all parts of a tomato plant, including the fruit. A white downy growth may develop on the underside of infected leaves. Late blight infections first appear as small, water-soaked spots on leaves and stems that grow and turn dark brown or gray. Once a tomato plant is infected with late blight, the entire plant should be removed and destroyed. It spreads fast and can quickly kill all tomato plants in a garden. Late blight is another fungus that infects tomato plants. Spray plants to prevent and control the spread of Early blight and Septoria leaf spot. Tools used to remove diseased leaves should be disinfected before being used on a different plant. Do not put infected leaves or plants in a compost pile. If a plant is heavily infected, the entire plant should be removed and destroyed. This may help stop the spread if caught early enough. Remove and destroy or throw away diseased leaves, both off the plant and any that have fallen onto the ground. All pictures presented here were taken by S. Weak and stressed plants are more susceptible to disease. hibiscus, rosemary, lavender, basil, vinca, gazania, fan palm, dogwood, holly. Fungus can be spread more easily when leaves are wet. Wet leaves allow fungus to grow and spread.Īvoid working with plants when they are wet. Consider using a soaker hose or drip tape. Avoid getting leaves and stems wet as much as possible and avoid watering in a way that may splash soil onto your plants. As plants mature, remove lower leaves until there is about 8 to 10 inches of space above the soil without any leaves.ĭo not use overhead watering. Use only new or disinfected stakes and cages. Early blight and Septoria leaf spot can survive on stakes and cages. Stake or cage plants to keep them off the ground. A cover helps prevent the spread of fungus from the soil to your plants. At least 2 feet of spacing, more is better.Ĭover the ground beneath your tomato plants with mulch, plastic or landscape fabric. Give your tomato plants more space for better airflow.Early blight and Septoria leaf spot can persist for multiple years in areas where tomatoes were grown. Don’t plant your tomatoes in the same place each year. Some weeds, like nightshade, can host early blight and Septoria leaf spot and spread them to your tomato plants. How to Prevent and Control Early Blight and Septoria Leaf Spotįollow the 12 easy steps below to enjoy a long season of sweet cherry tomatoes, colorful heirloom tomatoes and richly flavored sauce tomatoes. Stems can also become infected but infection of fruit is rare. As infections progress, leaves can turn yellow, then brown and finally dry and dead. Small dark spots, the fruiting bodies of the fungus, will appear in the gray or tan centers. Spots typically have a dark brown edge with a lighter gray or tan center. The spots start out circular but change shape as they grow and can merge with other spots. Symptoms of Septoria leaf spot also start on the older, lower leaves of a tomato plant and spread upward to newer growth. Infections most commonly occur on leaves but can also appear on stems and fruit. The area around the infection commonly turns yellow. BlightBlue MoldLeaf MoldAngular Leaf SpotBlight/Late BlightBlight/Late. Spots are dark brown in color and form concentric rings, or a bullseye pattern, as they grow. AnthracnoseAnthracnoseAnthracnoseLeaf BlightLeaf BlightLeaf BlightLeaf BlightLeaf. Early blight infections appear as spots that may start out circular or irregular in shape. Over time, infections spread upward to newer growth. Symptoms of early blight typically begin on the older, lower leaves of a tomato plant. ![]()
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