why are my tomato leaves turning dark?
83094
Black spots on tomato leaves can be caused by early blight, late blight, bacterial speck, and sooty mold, among other things. Black spots on tomato stems can be caused by bacterial wilt, alternaria stem canker, or tomato pith necrosis.
113630
The problem you are experiencing is probably due to inconsistent watering. If the soil dries out too much the tips of the leaves will turn brown. Of course, you don't want to over water either, especially in winter when growth has slowed, because this can lead to root rot.
201752
Depleted soil, incorrect soil pH for the plant or the wrong fertilizer can cause nutrient deficiency. Extremely low phosphorus initially causes the plant's leaves to look bright green, but eventually the older leaves turn necrotic.
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The leaves on the bottom of my tomato plants are turning yellow, then brown. ... But if half of your plant has dead leaves at this time of year, it's probably because you under-watered it, over-watered it, or dumped too much fertilizer on it, she said.
1079520
2) Lack of Sunlight: Since plants differ on how many hours of direct sunlight they need, lack of sunlight is another common reason leaves turn yellow. If you know you're watering your plant correctly, it might be time to adjust the location of the plant if possible.
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It is caused by the fungus Sclerotinia sclerotiorum. This disease can present itself while the plants are still small or during bloom. It can originate in the soil and form black areas on the roots and plant crown after the plant dies.
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Tomato leaf roll can also be caused by inconsistent watering, especially during hot spells. ... If plants stay too wet, they will have a hard time absorbing the calcium they need from the soil and will end up with tomato leaf roll. The leaves will start to curl over upside down, and may get kind of leathery.
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A lack of light can also cause the leaves to turn brown: if the lower leaves are dying off while new growth at the branch tips appears to be reaching for the window or light source then you have insufficient light and you need to move the plant to a brighter window or supply supplementary light from a grow light.
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High winds, blowing dust and low humidity can damage the leaves and stems on tomato plants. Heat and low moisture can cause the edges of the tomato leaves to die back, then twist and curl. Hot dry weather may also cause a symptom called physiological leaf roll.
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When tomato leaves are curling downward, this normally is the result of a lack of nutrients due to root rot. Root rot occurs when overwatering causes the plant to stop water uptake. The roots of the plant will contract and close to halt water uptake to prevent the plant from dying.
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What causes tomato plant leaves turning brown and curling? Septoria leaf spot, caused by a fungus (Septoria lycopersici), attacks tomatoes, eggplants, potato and several other plants related to tomatoes. The pathogen thrives when the weather is warm and humid with lots of moisture.
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Answer: This can be a sign of over-watering, overly cold conditions, overly hot conditions, or too much wind. Or, for most pepper plants and some tomato plants, it's a sign of anthocyanin. ... Answer: If the purple is slight and veiny, you don't need to do anything except stop worrying about your pepper plants.
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Problem: A cannabis nitrogen deficiency will cause the older, lower leaves on your plant to turn yellow, wilt away and eventually die. ... The light-colored leaves are a sign the plant needs more Nitrogen (and nutrients in general). On the flip side, plants that are receiving too much Nitrogen turn dark.
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Tomatoes need consistent night temperatures between 55°F and 75°F to set fruit. (A few varieties will set fruit at lower or higher temperatures.) Later in the season, the fruit will not color properly when night temperatures stay above 85°F, and plants will quit growing when temperatures go above 95°F.
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One of the most common issues with spider plants is water stress. ... Plants should not be standing in a saucer of water and they need high enough humidity to avoid leaf tip burn. Overwatering is a cause of spider plant leaves turning black or dark brown. The soil should dry out slightly between irrigations.
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Why are my basil leaves turning light green? Good luck! Probably either not enough sun, too much water or if they are potted plants, your pots may be too small. If they are in pots ,try re-potting them in fresh soil.
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Cucumber leaves can turn yellow for various reasons. Some of them are water levels, light, pests, disease or a potassium, iron or nitrogen deficiency.