Why Is My Courgette Not Producing Fruit?
A healthy-looking courgette with plenty of flowers but no harvest is usually dealing with timing, pollination or weather rather than a permanent failure. Early plants often make male flowers first. Cool, wet spells can also limit pollinating insects, but you can help the plant and often turn the season around.
Start by telling male and female flowers apart. Male flowers sit on a thin stalk, while female flowers have a tiny courgette-shaped swelling immediately behind the petals. It is completely normal for a new plant to open male flowers first for a week or two, especially in June. Do not remove them all, because they provide pollen for later female flowers. Wait for female flowers to appear before assuming the plant is unproductive. Check in the morning, when flowers are open and easiest to inspect. If the plant has only male blooms, continue steady care and allow time; it is usually establishing its root system before setting fruit.
Poor pollination is common during cool, wet or windy weather, when fewer insects visit flowers. If female flowers open but the tiny courgettes yellow, shrivel and rot, hand-pollination can help. On a dry morning, pick a newly opened male flower, peel back its petals and gently touch the pollen-bearing centre to the centre of an open female flower. One male flower can pollinate several females if pollen is visible. Alternatively, use a soft small brush, moving pollen between flowers. Repeat whenever female flowers open during poor weather. Stop hand-pollinating once bees and other insects are visiting reliably and fruit begins to enlarge normally.
Give courgettes warmth, light and room to grow. Plant outdoors only after the general risk of the last spring frost has passed, usually later in cooler northern and Scottish gardens. Choose a sunny, sheltered spot and protect young plants with fleece or a cloche during chilly spells, removing covers on warm days so insects can reach flowers. Each plant needs generous space, commonly about 90 cm from its neighbours, because crowded leaves shade flowers and trap damp air. In a small garden, grow one plant well rather than several cramped plants. Containers should be large, at least 40 cm wide, with free drainage and a stable position out of strong winds.
Keep the root zone consistently moist and well fed without making it waterlogged. Courgettes have large leaves and can wilt dramatically in sunshine, yet a plant that repeatedly dries out may abort young fruit. Check soil 5 cm down and water slowly at the base when it is beginning to dry. In hot weather, containers may need checking twice daily. Mulch beds with 3 to 5 cm of garden compost, well-rotted manure or leaf mould, keeping material clear of stems. Once flowering begins, feed regularly according to the label after watering. Avoid fresh manure and excessive feeding, which can produce masses of soft leafy growth at the expense of flowers and fruit.
Look for physical problems hidden beneath the foliage. Slugs can damage young plants and flowers, while grey mould can spoil flowers in persistently damp, crowded conditions. Remove rotting flowers and failed tiny fruits promptly, then improve airflow by taking away only damaged or old leaves with clean secateurs. Do not cut healthy leaves heavily, as the plant needs them to fuel fruit production. Check that the crown is not buried under mulch or compost, which can keep it too wet. If leaves are pale and growth is weak, reassess light, watering and feeding. A vigorous plant in a shaded spot may still flower poorly, so moving a young container can be worthwhile.
Harvest regularly once fruit begins, ideally when courgettes are young and tender rather than enormous. Picking every two or three days tells the plant to keep producing; missed oversized fruit can slow new flowers. Use a knife or secateurs to cut the stem cleanly, rather than twisting and risking damage to the crown. In warm southern gardens, the main challenge may be keeping water steady; in cooler regions, warmth and pollinator activity may be more limiting. Keep flowers accessible by avoiding dense companion planting around the base. With consistent care, a delayed plant often catches up quickly in July and August.
Frequently asked questions
Why does my courgette have flowers but no fruit?
Early in the season it may simply be producing male flowers first, which is normal. If female flowers are present but tiny fruits rot, inadequate pollination is likely, especially in cool or wet weather. Hand-pollinate open flowers in the morning and keep plants evenly watered until insect activity improves.
How do I hand-pollinate courgettes?
On a dry morning, use a freshly open male flower. Remove its petals and gently touch the pollen-bearing centre to the centre of an open female flower, identified by the small fruit behind it. A soft brush also works. Repeat on each suitable day until fruits begin to grow.
Should I remove courgette leaves to get more fruit?
No, not routinely. Large healthy leaves are needed to make energy for fruit, and heavy pruning can weaken the plant. Remove only yellow, damaged or diseased leaves with clean secateurs. Better light, steady watering, pollination and regular harvesting are more useful ways to increase production.
General guidance for UK home gardens and allotments. Conditions vary by region, soil and season; the RHS or a local garden centre can give site-specific advice. Page updated 19 Sep 2026.