🥒 Why Are My Courgettes Not Producing Fruit?

Courgette plants can look big, green, and healthy—yet produce lots of flowers and no courgettes. This is a very common frustration and is usually caused by pollination, weather, or plant stress, not a serious disease.

Here’s a clear, practical guide to the most common reasons—and how to fix them.

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🌼 1. Male Flowers Only (Early in the Season)

This is completely normal.

What’s happening

• Courgettes produce male flowers first
• Female flowers appear later once plants mature

How to tell

• Male flowers have a thin stem
• Female flowers have a tiny courgette behind the flower

What to do

• Be patient — female flowers will follow
• Keep plants healthy and watered

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🐝 2. Poor Pollination (Most Common Cause)

Courgettes rely on insects to move pollen.

Why pollination fails

• Cold, wet, or windy weather
• Few bees around
• Growing in greenhouses or polytunnels

Signs

• Flowers open then drop off
• Tiny courgettes start then shrivel

What to do

• Hand-pollinate (transfer pollen from male to female flower)
• Grow pollinator-friendly flowers nearby
• Open greenhouse doors on warm days

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🌡️ 3. Temperature Stress

Courgettes are very sensitive to temperature swings.

Problems

• Cold nights stop fruit forming
• Heat stress causes flowers to abort

What to do

• Protect plants from cold with fleece
• Mulch to regulate soil temperature
• Water consistently during hot spells

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💧 4. Watering Problems

Inconsistent watering leads to stress.

Signs

• Flowers drop
• Small fruits rot or shrivel

What to do

• Water deeply and regularly
• Avoid letting compost dry out completely
• Mulch to retain moisture

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🧪 5. Feeding Issues

Too much or too little feed affects fruiting.

Too much nitrogen

• Lots of leaves
• Few or no flowers

Not enough feed

• Flowers form but drop
• Weak growth

What to do

• Switch to a potassium-rich feed once flowering starts
• Avoid high-nitrogen fertilisers
• Feed little and often

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🌱 6. Lack of Sunlight

Courgettes need full sun to fruit well.

Signs

• Weak flowering
• Slow growth

What to do

• Grow in the sunniest spot available
• Avoid shading from taller crops
• Space plants properly

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🐛 7. Pests or Disease Stress

Stressed plants drop flowers first.

Possible issues

• Aphids
• Powdery mildew
• Vine damage

What to do

• Check plants regularly
• Treat problems early
• Remove badly affected leaves

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🧠 Key Takeaway

Most courgette fruiting problems come down to pollination, weather stress, and watering—not a lack of effort.

If your plant is:

• Green and growing → pollination is usually the issue
• Leafy but not flowering → too much nitrogen
• Flowering but no fruit → poor pollination or stress

Fix the cause, and courgettes usually start cropping very quickly.

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