In brief: Courgettes thrive in a warm, sunny spot with nutrient-rich, loose soil. Sow the seeds directly outdoors from mid-May or start them indoors from April. Keep the soil evenly moist and fertilise regularly. Harvest the fruits while young so the plant keeps producing. A good location and regular picking are the keys to a successful harvest.
How to Grow and Care for Courgettes: Tips for a Bumper Harvest
Courgettes are among the most rewarding vegetables to grow in the garden. With little effort, they provide fresh fruits for months. Success depends on choosing the right variety, selecting the ideal location and providing consistent care.
How do I choose the right courgette variety?
There is a wide range of courgette varieties to choose from. They differ in colour, shape, growth habit and flavour. Classic, long green courgettes are robust and high-yielding. Round varieties are ideal for stuffing.
Yellow courgettes add colour to the vegetable patch and your plate. They are often slightly more delicate in flavour. Pay attention to the growth habit: bush courgettes need plenty of space, while climbing courgettes save room but require sturdy support.
For a home garden, I recommend a mix of classic green courgettes and one yellow or round variety. This gives you more variety in the kitchen and reduces the risk of all your plants being affected by a disease at the same time.
Young plants raised under glass or on a windowsill are practical for getting an early start. You can find a wide selection in the vegetable seed range. A reliable round variety, for example, is
.
What do courgettes need for the perfect start?
Courgettes love warmth and sunshine. Choose a spot in full sun that is sheltered from the wind. The soil should be deep, rich in humus and well drained. Improve heavy soils with sand and mature compost.
Prepare the bed well in advance. Work in well-rotted manure or compost. This provides the plants with nutrients over the long term. Sow outdoors only after the last frosts, once the soil has warmed up.
Expert tip
Sow courgettes in small groups. Place three seeds about 2 cm deep at each planting site. Once they have germinated, leave only the strongest plant. This method ensures reliable germination and allows you to select the best plant.
To raise plants indoors, sow the seeds in pots from mid-April. Use seed compost and keep it evenly moist. Place the pots somewhere bright and warm. Before planting them outdoors, gradually acclimatise the young plants to outdoor temperatures.
How do I care for courgette plants properly?
Care focuses on three things: water, nutrients and protection. Courgettes need plenty of water. Water regularly and thoroughly at the roots. Avoid wetting the leaves to help prevent fungal diseases.
A mulch layer made from grass clippings or straw keeps moisture in the soil and suppresses weeds. Fertilise sparingly at first after planting. Once flowering and fruit formation begin, the plants' nutrient requirements increase significantly.
Important note
Avoid over-fertilising with nitrogen-rich fertilisers. They encourage lush leaf growth at the expense of fruit production. Instead, use a potash-rich vegetable fertiliser or nettle feed.
Check the plants regularly for pests such as aphids or squash beetle larvae. At the first signs of mildew, a grey-white coating on the leaves, remove the affected leaves. Ensure good air circulation by leaving enough space between plants.
Why is the right harvest time so important?
Harvest courgettes when they are young and 15 to 20 centimetres long. At this stage, the flesh is tender, the seeds are soft and the flavour is at its best. Regular picking is the key to a long harvest period.
Every fruit you harvest signals to the plant that it should produce new flowers and fruits. If you allow the fruits to grow too large, the plant often stops producing. Oversized courgettes become woody and fibrous and contain large, hard seeds.
The greatest joy of growing courgettes is the continuous harvest. Walk through the vegetable patch every two days and pick everything that is ready. You can also use the large yellow male flowers in the kitchen—they are a delicacy.
Cut the fruits from the stem with a sharp knife. A practical helper for harvesting is the
. It is gentle on the plants and keeps the vegetables clean during transport.
How can I make the most of my harvest and store it?
Freshly harvested courgettes will keep in the fridge for about a week. Do not store them next to ethylene-producing fruit such as apples, which will make them wilt more quickly. Courgettes are excellent for freezing.
To do this, cut them into slices or cubes, blanch them briefly and freeze them in portions. A glut of courgettes can be used to make soups, ratatouille or chutney. Pickling them in vinegar or oil is another good method.
Additional advice
Plant a few
next to your courgettes. Basil is not only a good match in terms of flavour; according to some gardeners' experience, it may also help keep pests away from courgettes. Give this companion planting combination a try.
What are common problems and how can you solve them?
Powdery mildew is the most common fungal disease. Prevention is the best strategy: water at the base, leave enough space between plants and choose resistant varieties. If plants are affected, you can spray them with a milk-and-water mixture (1:9).
Fruit rot at the tips indicates a calcium deficiency or irregular watering. Keep the soil evenly moist. If many flowers drop without producing fruit, the problem is usually poor pollination.
Insects are often not active enough. Hand-pollinate with a paintbrush. Barriers or regularly collecting slugs in the evening can help protect your plants from voracious slugs. For more plant protection solutions, you will find suitable products in our shop.
Conclusion: How to enjoy a bumper courgette harvest
Growing courgettes is easy and rewarding. Start with the right variety in a sunny spot. Make sure the soil is rich in nutrients and water regularly. The most important trick is to harvest consistently while the courgettes are still young.
With these basics, nothing stands in the way of a bumper harvest. For your next gardening project, also browse our Seeds category. There you will find inspiration for the entire gardening season.
Frequently asked questions
- When is the best time to plant courgettes?
- Plant courgettes outdoors after the last frosts, from mid-May onwards. To get a head start, you can sow them indoors on a windowsill or in a greenhouse from April. The germination temperature is 20-22°C. Only plant out young plants once there is no longer any risk of night frosts and they are strong enough.
- How much space does a courgette plant need?
- Allow at least one square metre of space per courgette plant. Bush varieties spread out considerably, while climbing courgettes need a sturdy trellis. The generous spacing ensures good air circulation, helps prevent fungal diseases and allows the plant to reach its full potential.
- Why are my courgettes producing flowers but no fruit?
- Pollination is often the problem. Courgettes produce both male and female flowers. In poor weather or when there are not enough insects, hand-pollination can help: use a paintbrush to collect pollen from a male flower and transfer it to the stigma of a female flower. You can identify female flowers by the immature fruit at their base.
- Can you grow courgettes in a pot?
- Yes, for growing courgettes in pots, choose compact bush varieties. The container must hold at least 30 Liter and have a drainage hole. Use high-quality vegetable compost and feed regularly, as the nutrients in the limited volume are depleted more quickly.
- How often should you water and feed courgettes?
- Water regularly and thoroughly, especially when the plants are producing fruit. The soil should never dry out, but avoid waterlogging. Feed every two to three weeks with a potassium-rich liquid fertiliser or incorporate well-rotted compost before planting. Too much nitrogen only encourages leaf growth.
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