Yellowing on Outer Edges of Tomato Plant

16 Apr

Yellowing on Outer Edges of Tomato Plant

Rumors are among the most frequent vegetables in the home garden and often the first food-bearing plants that a new gardener tries. Although tomatoes are simple to care for, they can sometimes develop unusual issues that are hard to diagnose. Yellowing on the outer edges of tomato leaves or on the outer border of the plant is just a symptom which usually can be handled. More often than not, the problem is caused by something wrong in the surroundings — when that’s corrected, the plant must grow normally.


Rumors are sensitive to changes in the environment and can often let a gardener understand if there is a problem. Newly transplanted tomatoes that develop yellow to white edges around their leaves might be experiencing sunburn when they were planted directly in the backyard without being hardened off very quickly. Providing a shade for your plant which you can slowly remove will make it better stitch to direct sunlight.

Drought Stress

A lack of water during drought may cause yellowing as leaf margins due to the plant’s inability to offer water into your cells furthest away from its origins. Lower leaves may curl upward in the first stages of drought stress. You can help strawberries rebound from watering affected plants at least once per week, more often if they seem to wilt during midday.

Nutritional Deficiencies

Depending on the exact symptoms that your tomato plant exhibits, yellowing can signal a variety of nutritional deficiencies. For instance, a lack of nitrogen may cause older leaves to yellow, where boron deficiency affects just the tips. Fertilizer burn may cause similar symptoms, yellowing leaf margins. When a tomato that has been getting lots of water shows yellowing leaves, then it is time to check the soil.

Chemical Burns

Chemical burns may occur after therapy with a pesticide which leads to phytotoxic reactions or when herbicides are applied close strawberries. Pesticides often make plants more sensitive to sunlight, affecting the outer leaves first because they receive more sunlight than internal leaves. Always analyze plants for signs of burning two days prior to applying any type of pesticide, insecticidal soap or horticultural oil. Herbicides developed to kill grasses might blow into neighboring tomato crops if implemented during windy conditions, causing inconsistent yellowing on outer leaves.

Vascular Wilts

Vascular wilts like fusarium and verticillium are common tomato issues. These fungal pathogens work their way throughout the plant’s water-transporting tissues, often affecting one side or part of the plant prior to invading another. Symptoms are similar between the wilts. Frequently, the first symptom is the yellowing of leaves between the significant veins, but eventually the entire plant will wilt, collapse and die. There’s not any treatment, but immune plants are offered for potential gardens — look for tomatoes using the letters “V” and “F” following their names at your garden center.

Plant Viruses

The whitefly, a flying, sap-sucking tomato bug, is in charge of transmitting a variety of viruses to tomato crops which cause yellowing of leaves in various patterns. The feeding habits of whiteflies can cause leaves to yellow and curl, making it hard to tell if the damage is in fact in the insect or a plant virus it left behind. The most important tomato viruses these insects carry are the tomato infectious chlorosis virus and gemini viruses like the tomato yellow leaf curl virus. There’s not any remedy for tomato viruses, however you can manage whiteflies by using aggressive cultural, mechanical and chemical methods collectively.

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