Tomatoes are luscious and well-to-do to grow in your nursery or backyard , but they are susceptible to a numeral of problems . When troubleshooting your Lycopersicon esculentum , keep in intellect that many disease and gadfly infestations share the same or similar symptom . just identify the movement of the symptom is key to successfully treating the problem .

Septoria Leaf Spot

This fungous disease announces itself with small black spot on the leaves that recrudesce lightsome - coloured centre . finally the spots turn whitened or gray with a dark - colored margin and a pitch-dark Lucy in the sky with diamonds in the middle . You ’ll see them first on the bottom leaf before they progress up the plant . A mild case may turn stern in smashed conditions . To control septoria leaf spot , ensure honest air circulation between plants by space them well . Overhead irrigation should be ward off . Remove infected leaves from living works . Clean up all morbid plant tissue from the soil to prevent the fungus from overwinter on the debris . Do n’t compost any infected parts . In the causa of a heavy infestation , sulfur junk may help to protect new leaves .

Leaf Mold

The fungus Fulvia fulva causes a circumstance name " leaf cast , " which begin as lily-white spots on the upper surface of older leafage . These spots rapidly enlarge and yellowed , and the lower control surface of the foliage underneath the fungal spots acquire a velvety , olive - brown growth . sizable ventilating system and good air circulation in the nursery can avail keep foliage mold under control . keep a temperature of between 60 and 65 degrees Fahrenheit . At Nox , when air temperatures drop below this range , wake the glasshouse to combat the nighttime humidness addition .

Stink Bugs

When reek glitch feed on your tomatoes , they leave unerasable marks just underneath the skin of the yield . On green fruit , these set about as dark pinpricks surrounded by light discolored areas . As the yield ripens , the region may turn icteric or cloudy white , or they may rest green . Underneath the spots , the yield tissue will be white and spongy , and cavum may make . Control Mary Jane growth tightly near your tomato plant . That ’s where stink bugs overwinter . fleece them of their weedy habitat and they ’ll be less likely to nibble at your crop .

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