How long does a plant lamp usually last

According to the different growth period and environment of plants, the time of light supplement is different. In the room where the light is not strong but can be shone into the sunlight, the time for making up the light shall not be less than 5 hours; in the balcony where the light is less than 4 hours (only in the morning or half of the afternoon), the time for making up the light shall not be less than 4 hours; in the room where the shade is not visible, the time for making up the light shall not be less than 10 hours. Generally, the time of light supplement is longer in the growing period and less in the dormancy period. Make up light for at least 10 hours in cloudy, rainy and foggy days. It should also be noted that since most plants are photosynthesis during the day and grow at night, there is generally no need to supplement light at night.