Flower drop
Symptoms
Tomatoes start to drop flowers when the night air temperature exceeds 24 degrees.
Control and prevention
Ventilate the greenhouse, reduce night temperature, choose more heat-resistant varieties.
Related problems
Similar symptoms might indicate a different cause — compare them.
Irregular fruit shape
Fruits with an irregular shape are sometimes found — scarred, divided into lobes (when this is not characteristic of the variety). This happens due to the effect of low temperature on the flowers, so it usually occurs in early fruits.
Fruit cracking
Scars appearing around or across the tomato. The fruit cracks if it ripens during a hot period and at the same time receives too much water — cracks appear due to too rapid water uptake.
Sunburn
A yellow or white area on the side of the fruit facing the hot sun. Happens due to sparse foliage, when the fruits are not protected from harsh rays. Symptoms can also be a sign of bacterial or fungal disease.