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What should you do if white spots appear on the leaves?

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There are several reasons why white spots appear on cucumber leaves. If it is caused by cold wind, you should ventilate with your back to the wind direction when airing out, and the vent should be opened gradually from small to large, or hang a piece of plastic film on the inner side of the vent. If it is caused by excessively low temperatures, insulation measures should be taken, keeping the daytime temperature between 25°C and 30°C, and the nighttime temperature should not fall below 10°C.

1. Avoid direct cold wind

Cause: If cold wind blows directly onto warm leaves, it will cause the leaves to lose their green color and form white spots.

Solution: When airing out, ventilate with your back to the wind direction, and the vent should be opened gradually from small to large; do not rush it. Alternatively, you can hang a piece of plastic film on the inner side of the vent, which can also prevent cold wind from blowing directly onto the plants.

2. Insulate in time

Cause: If the temperature remains above 0°C for a long time but below the temperature at which it grows normally, the leaves are prone to developing yellow-white chlorotic spots, and may even die off; there may also be slow growth or failure of the plant to root.

Solution: Identify the cause of the low temperature and take insulation measures, keeping the daytime temperature between 25°C and 30°C, and the nighttime temperature no lower than 10°C, preferably between 10°C and 18°C.

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