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How to prune cucumber plants
Prune your cucumbers when they grow 1-2 ft (0.30-0.61 m) tall.
For best results, prune your cucumber plants after they grow to a decent size. On average, you can prune them 3-5 weeks after they start to grow.
Pick from:
(i) They will be tender and healthy until they get larger. Once they are 4-5 ft (1.2-1.9 m) tall, it can be beneficial to prune them again on a post-spring basis.
(ii) If you prune a cucumber too early, it may not develop properly and the vine may get damaged. This ensures the plant can support cucumbers later in the growing season.
(iii) Cut your cucumbers at the beginning of their blooming season. As the cucumbers are beginning to flower, it's important to cut each cucumber down to a length of 5 feet (1.8 m) or less.
(iv) Cut ends with a gardening spade to mark them off. Choose a tape measure and a plant shape you want to work with.
(ii)