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Underground greenhouse lighting

Underground greenhouse lighting

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Good day. I want to build an underground greenhouse with heating. So that you can grow cucumbers all year round. I would like to know what lighting is needed and whether it is needed around the clock in the greenhouse?


Good day.

When building a greenhouse, we have it 2 meters deep and 1 above the ground, we were guided by the following lighting rules:

In the natural cultivation of vegetables and herbs, lighting and heating takes place from 10 to 13 hours. This is the optimal mode.

But the greenhouse, we completely do not leave without lighting, even at night. Additional illumination (40 W lamp, 2 pcs.), Remains at night.