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How do I grow cucumbers in my Polytunnel?

Cucumbers are a warm-loving vegetable that can be grown successfully in a polytunnel. Here are some tips on how to grow cucumbers in a polytunnel:


  1. Start seeds indoors 6-8 weeks before the last frost date in your area. Use seed trays or pots and a good seed compost.

  2. Transplant seedlings into the polytunnel when they are big enough to handle. Space the plants 18-24 inches apart.

  3. Keep soil consistently moist, but not waterlogged. Cucumbers prefer a pH between 6 and 7.

  4. Provide support for cucumber plants as they grow. Trellising or growing on a vertical support system is recommended. This will save space and keep the fruit off the ground.

  5. Cucumbers require high temperatures and high humidity, so a polytunnel is an ideal growing environment. Aim to maintain a daytime temperature of around 70-75°F and a nighttime temperature of around 60-65°F.

  6. Provide adequate light. Cucumber plants require at least 8 hours of sunlight per day.

  7. Fertilize cucumbers regularly throughout the growing season with a balanced water-soluble fertilizer.

  8. Cucumbers are generally harvested when they are around 6-8 inches in length. Keep an eye on the fruit and harvest them when they are at the right stage.

  9. Remove the male flowers that appear early in the season, as they will not bear fruit.

  10. Cucumbers are commonly affected by pests and diseases, so it is important to monitor them and take action if needed.

You can grow different types of cucumbers, like vining or bush type, but in a polytunnel vining is most suitable.

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