Thump Agri and Horti Tech (Shanghai) Co., Ltd.   : Henry 0086-15372315218    :
You are here: Home » News » News » Unveiling the Growth Rhythms: Does Cannabis Thrive More in Daylight or Darkness?

Unveiling the Growth Rhythms: Does Cannabis Thrive More in Daylight or Darkness?

Views: 2    

The cultivation of cannabis is an intricate dance between the plant's biological clock and environmental conditions. As growers seek to optimize their yields, a common question arises: Does cannabis grow more during the day or night? In this article, we will explore the nuanced relationship between cannabis plants and light cycles, shedding light on the factors that influence their growth patterns.

  1. Understanding Photoperiodism:Cannabis, like many other plants, exhibits photoperiodic behavior. This means its growth and development are influenced by the duration of light and darkness it receives. Cannabis plants are categorized as either short-day (flowering triggered by longer nights) or long-day (flowering triggered by shorter nights) plants. The type of cannabis you're growing—indica, sativa, or a hybrid—will determine its specific photoperiodic requirements.

  2. Vegetative Growth and Daylight:During the vegetative stage of growth, cannabis plants typically favor longer periods of daylight. This phase is marked by rapid foliage development, branching, and the establishment of a robust root system. Providing 18-24 hours of light per day is common during the vegetative stage, replicating the long days of spring and summer.

  3. Flowering and the Dark Cycle:Cannabis plants transition to the flowering stage when exposed to a certain amount of uninterrupted darkness. For most cannabis strains, this dark period should be around 12 hours or more. During flowering, the plant redirects its energy from vegetative growth to the production of flowers, ultimately leading to the formation of buds.

  4. Photosynthesis and Light Utilization:While cannabis plants do perform photosynthesis during the day, their ability to utilize light for growth extends beyond daylight hours. The dark cycle is crucial for the plant's metabolic processes, allowing it to convert stored energy into growth during periods of low light. This is particularly evident during the flowering phase when the plant channels energy into bud production during the dark hours.

  5. Optimizing Light Cycles for Maximum Yield:The optimal light cycle for cannabis cultivation depends on the specific goals of the grower. During the vegetative stage, providing longer daylight hours promotes vigorous growth. Once flowering begins, maintaining a consistent dark period is essential for the initiation and development of buds. Growers often use light timers to automate and control these cycles, ensuring the right balance for each growth stage.

  6. Temperature and Humidity Considerations:Beyond the light cycle, environmental factors such as temperature and humidity play a crucial role in cannabis growth. It's important to create a stable and favorable environment to support the plant's metabolic processes throughout its life cycle.


In the intricate dance of cannabis cultivation, the question of whether cannabis grows more during the day or night is inherently tied to its photoperiodic nature. Understanding the specific needs of your cannabis strain, whether indica or sativa, and tailoring light cycles accordingly is key to achieving optimal growth and maximizing yields. By striking the right balance between light, darkness, and environmental conditions, growers can unlock the full potential of their cannabis plants from seed to harvest.


Thump Agri and Horti Tech(Shanghai) Co., Ltd.

  No. 806-808, Building 3, Forte Pujiang Center, Lane 1505, Lianhang Road, Pujiang Town, Minhang District,  Shanghai, China

Copyright © 2020 Thump Agri and Horti Tech (Shanghai) Co., Ltd.
 No. 806-808, Building 3, Forte Pujiang Center, Lane 1505, Lianhang     
          Road, Pujiang Town, Minhang District, Shanghai, China
  Henry  0086-21-58109067  0086-15372315218