Tomato Leaves Turn White: How to Treat Tomato Plants with White Leaves

The tomato, one of the most commonly cultivated garden plants, is very sensitive to cold and excessive sunlight. Because of their extremely long growing season, many people start their plants indoors and transplant them later in the growing season, once the soil has become progressively warmer. The transplanting of tomato plants is the area where a problem can be encountered. Their sensitivity to extreme temperatures and light often makes them vulnerable to white tomato leaves. Let’s explore this white leaf colour in tomato plants.

Why do tomato leaves turn white?

If you are unlucky enough to find a silvery or white leaf in your tomato plants, it is probably the result of sun damage, vulnerability to cold or some kind of disease (probably a fungus).
The most common cause of leaf whitening on tomatoes, especially on recently transplanted young plants, is exposure to intense sunlight. Although tomato plants need full sunlight for healthy growth, a sudden change in location from indoors to outdoors can surprise the plants and cause tomato leaves to turn white. Usually, sun damage appears as a white border on the leaves of the tomato plant. The leaves may curl and break, leaving minimal foliage on the plant. Winds in the transplant area also aggravate this condition. Ripe tomato plants suffering from heat stroke will have blistered or paper-like fruit.
In retrospect, the solution for white-leaved tomato plants due to overexposure to the sun is simple. In the future, I will let the grafts languish in the shade for a few days, move them outside on cloudy days, and then gradually place them in the sun for a few hours each day for a week or two. This is called hardening. Either of these two methods gives the plant time to acclimatize to its more radical environment.
If hot, dry winds are an additional problem, try placing a windbreak around the grafts or moving them to a protected area. In either case, if the wind or sunburn is not too strong, the plant will probably recover; remove all affected leaves to discourage disease.

Mushroom Reasons for White Leaf Tomato Plants

In addition to environmental exposure, another explanation for white leafy tomato plants is disease. The disease is primarily a fungus on the variety and results from the same cause, over-watering. Excess water in the soil stimulates the spores of the fungus and causes root rot, the Alternaria or Septoria leaf spot, which has dark edges surrounding the white leaf spots.
The grafts must be watered thoroughly for the first three days and then, depending on the weather, once a week or every two weeks. This promotes deep root development and prevents fungus spores from gaining the upper hand. If a fungal disease has taken root, so to speak, try a fungicide for tomato plants to repair the leaves that whiten your tomatoes.

Nutrients that whiten the leaves of tomatoes

Finally, a potential cause of tomato leaf bleaching is a lack or excess of nutrients. Plants that lack nitrogen or phosphorus may experience leaf bleaching or yellowing. A tomato fertilizer that contains appropriate amounts of these nutrients is a likely solution.
In addition, deficiencies in calcium or magnesium also lead to leaf bleaching as the leaf veins remain green. Again, applying the right fertilizer is the right thing to do. In addition, garden lime will contribute to calcium deficiency.

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