Greenback on tomatoes

Question ...

What causes Greenback on tomatoes?

Answer ...

Greenback is a condition where the stalk end of the fruit fails to ripen, remaining green or yellow. It is usually caused by excessive heat in the greenhouse. Next year ensure that there is adequate ventilation in your greenhouse, shading and damping down to reduce temperatures.

A shortage of both potassium and phosphorous may also be a contributory factor, but don't be tempted to overfeed. Tomatoes need a regular feeding and watering regime.

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