What does blight look like on tomatoes

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We and our partners process data to: Actively scan device characteristics for identification. Septoria Leaf Spot. Like early blight, the first symptoms of septoria leaf spot often begin on the lowest leaves of plants after fruits appear.

Rather than showing as a few lesions per leaf, septoria leaf spot appears as many tiny, brown spots on leaves. Lesions continue to grow and spread before causing leaves to fall off. This type of blight does not usually affect fruits. Early blight and septoria leaf spot spores survive the winter in the ground, causing the disease to return next year. Once blight is positively identified, act quickly to prevent it from spreading. Remove all affected leaves and burn them or place them in the garbage.

Mulch around the base of the plant with straw, wood chips or other natural mulch to prevent fungal spores in the soil from splashing on the plant. When planting tomatoes, make a plan to prevent blight. Incorporate these simple steps to keep your plants healthy. Inspect the plants in your garden every few days for signs of damage. Fast diagnosis and a quick response are the keys to a healthy, tasty harvest.

Toggle navigation GardenTech. It is important to alternate between different chemical families to avoid the development of pathogen insensitivity to particular active ingredients. Some insensitivity to the chemical family 11 has become more common in some areas, so particular care should be taken to rotate these with other chemical families.

Also, if insensitivity is already present in a given field population of early blight, fungicides in chemical family 11 will not provide good control. All rights reserved. The University of Minnesota is an equal opportunity educator and employer.

Home Fruit and vegetable farming Vegetables Disease management Early blight of tomato. Quick facts Early blight is one of the most common tomato diseases, occurring nearly every season wherever tomatoes are grown. It affects leaves, fruits and stems and can be severely yield limiting when susceptible cultivars are used and weather is favorable. Severe defoliation can occur and result in sunscald on the fruit.