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Symptom

Flowers falling off

Flowers drop when conditions are wrong for pollination: heat, cold nights, dry roots, or no pollinators. The plant keeps flowering and sets fruit once conditions improve.

Think about the last week's weather and watering. Most flower drop follows a hot spell, a cold night or a missed watering.

Likely causes

Ordered from the usual answer to the less likely one. Each links to the full problem.

Recorded on Green beans

  1. A bean plant in hot sun with fallen flowers on the soil below Fruiting Common

    Blossom drop

    Flowers yellow at a joint in the stalk and fall.
  2. A tomato plant wilting in a hot, dry bed Light & temperature Common

    Heat stress

    Flower loss during hot spells.
  3. A drooping plant in dry, cracked soil Watering Possible

    Underwatering

    Flowers drop after pots dry out.

Less likely on Green beans

  1. A courgette with a withered flower and a shrivelling fruit Fruiting Possible

    Poor pollination

    Unpollinated flowers wither and fall.