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Blossom End Rot in Tomatoes: Causes, Symptoms, and solution

Blossom End Rot is a common disorder in tomatoes where the bottom (blossom end) of the fruit turns black, sunken, and leathery. It’s not a disease but a physiological problem caused by calcium deficiency in the developing fruit.

Causes:

• Calcium deficiency in fruit, even if soil has enough calcium.

• Irregular watering – dry spells followed by heavy watering.

• Rapid plant growth due to high nitrogen or warm weather.

• Root damage or poor root uptake.

Symptoms:

• Dark, sunken spot at the bottom of the tomato.

• Usually appears on green or early-ripening fruits.

• Fruits become unmarketable.

Prevention & Control:

1. Maintain consistent watering – avoid drought stress.

2. Apply calcium fertilizers like calcium nitrate or calcium chelated sprays.

3. Mulch the soil to keep moisture steady.

4. Avoid over-fertilizing with nitrogen-rich fertilizers.

5. Use balanced nutrients – ensure good root health.

Blossom End Rot can be frustrating, but with good watering habits and timely calcium management, it can be easily prevented.