Fresh cucumbers are perfect for salads, soups and refreshing snacks. Home gardeners or large scale farmers increase fruit production by growing cucumbers in greenhouses. Cucumber plants greatly benefit from bright light, high humidity and nutrient-rich soil. When growing cucumbers out of season, it may be necessary to heat your greenhouse in order to provide ideal temperatures. With the proper care, you can grow your very own fresh greenhouse cucumbers.
Plant one cucumber seed per container. In the center of a peat, clay or plastic pot full of rich potting soil place a single seed 1 inch below the surface. Optimum germination temperature is 84 degrees Fahrenheit.
Mix in manure to the soil before planting and apply a starter fertilizer solution (10-52-17) after seedlings are several weeks old.
Spread mulch along the base of the plants to aid in moisture retention and root warmth. Straw, hay or peanut hulls are an affordable alternative to store-brand mulch.
Provide 5 to 7 square feet of floor space for each plant. Greenhouse cucumbers grow vigorously with large leaves and should be kept from contact with each other.
Install additional lighting in your greenhouse.Extending the day to 12 to15 hours with supplemental lighting can be beneficial for young seedlings. Once germinated, temperatures should not fall below 70 degrees Fahrenheit.
Use warm water (65 degrees Fahrenheit or above) to fully soak the soil on a regular basis. Roots should never be left dry.
Train vines upwards for maximum fruit production. Hang a wire from the ceiling of your greenhouse 6 to 7 feet above ground. Tie growing vines to the wire with twine until it is large enough to reach the wire.
Prune your vine to encourage rapid, upward growth. Remove all lateral branches until the main vine reaches the overhanging wire. Lateral growth is then allowed on the main stem as long as it is 30 inches above the base.
Harvest mature cucumbers frequently. Greenhouse cucumbers will quickly become overripe and should be removed as soon as they are the desired length.This will aid in the development of younger fruit and limit stress to the plant.