Why Lights is so important for cannabis growing?

Marijuana is a light loving crop. The influence of sunlight on marijuana includes two aspects: one is the total light exposure received by marijuana during the growth cycle, and the other is the daily sunlight exposure received by marijuana.

In general, sunlight exposure has a greater impact on the dry weight of hemp than the total exposure, but the total exposure has a greater impact on the fiber quality (strength of primary fiber). In seed retention or oil cultivation, strong light is conducive to axillary bud germination and inflorescence development of hemp plant, so as to improve seed yield. During hemp picking and cultivation, weak light can inhibit axillary bud germination and reduce the growth of branches into the top, which is conducive to improving fiber yield and quality. The sun is abundant, the aboveground and underground parts grow well, and the dry weight and yield increase. But the sunlight is too strong, the fiber development is slow, and rough and hard. Therefore, in terms of fiber quality, it is appropriate to take cloudy days or cloudy weather with weak light. Marijuana is a crop with short sunshine, which can promote flowering, but the plant is short and the fiber yield is low; Prolonged sunshine can delay flowering, and prolonged sunshine can delay flowering. Due to the extension of vegetative growth period, the plant grows tall and the fiber yield is high. There are also varieties that bloom under long sunshine.