Q. Why are my seedlings turning yellow?
Answer
There could be a number of reasons for seedling to turn yellow:
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The most probable cause is over watering, although, confusingly, under watering can also be a problem. With your finger, feel the soil an inch or so below the surface and only water if it feels dry.
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Too strong light from sunlight or artificial light can also be a cause.
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Seedlings do not usually need fertilizer. In older plants you may have a nutrient deficiency. If you have applied a chemical fertilizer then you may have “fertilizer burn”. Use an organic fertilizer instead.
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Moist conditions can also lead to a very common issue -- “damping-off’( a fungus disease). Provide better ventilation and less water.
Courtesy of NYBG Plant Information
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