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Simply so, what do plants do at night?
While the sun shines, plants perform photosynthesis. In this process, the plants convert sunlight, water and carbon dioxide into stored energy in the form of long chains of sugar, called starch. At night, the plants burn this stored starch to fuel continued growth.
Then, do plants Photosynthesise at night?
Photosynthesis doesn't occur at night. When there is no photosynthesis, there is a net release of carbon dioxide and a net uptake of oxygen. If there is enough light during the day, then: the rate of photosynthesis is higher than the rate of respiration.
Watering plants in the late afternoon or early evening also cuts down on evaporation and allows the plants several hours without sun to take up water into their system. This is because damp leaves at night encourage fungus problems, such as powdery mildew or sooty mold, which can harm your vegetable plants.