Ideal Growing Conditions for Cannabis Plants


What is marijuana?

Cannabis is an annual, dioecious, flowering herb with palmately compound leaves with serrated leaflets. We smoke the flower buds of the female plants, which are rich in THC and CBD. Cannabis plants are generally divided into 3 categories: Indica, Sativa, and Hybrid. The life of cannabis goes through 4 stages, namely: Germination, Seedling, Vegetative, and Flowering, which takes about 10-32 weeks, depending on the method you choose and how big you want the plant to grow.

Cannabis growing conditions:

Before we start growing marijuana plants, we need to understand the general growing conditions of the plants. When we control the key conditions needed for plant growth, such as temperature, light, nutrients, and water, growing plants becomes quite simple.

1) Growth Medium

Marijuana plants are best grown in loose, breathable, highly-absorbent soil. The growing medium provides physical support for the plant, allows the roots to breathe, and maintains available water and nutrients for the plant. Generally, the cultivation media that can be selected are mixed potting soil, coconut peat, rock wool, peat, perlite, etc.

2) Lighting

Cannabis, like other plants, promotes healthy plant growth through photosynthesis. The more light a plant receives, the better its growth and yield. When growing cannabis indoors (under grow lights) – with the exception of autoflowering varieties – plants are typically kept in 18 hours of light and 6 hours of dark during the vegetative phase and 12 hours of light and 12 hours of dark during the flowering phase. 

3) Temperature

The best light-on (daytime) temperature range for cannabis is 70-85℉ in the vegetative stage, 65-80℉ in the flowering stage, and the light-off (night) temperature is about 10℉ lower than the light-on temperature. Using a temperature meter to check the data. 

4) Humidity

Humidity is an important part of plant growth. Dry conditions slow down the rate of photosynthesis; excessive humidity encourages pests and hinders transpiration, ideal humidity levels for optimal growth are 40–70% RH. Using a hygrometer to check the data. 

5) Airflow

Air circulation and ventilation create uniform airflow throughout the grow space, helping to regulate CO2, relative humidity, and air temperature. Plants need fresh flowing air to ensure a certain CO2 concentration during photosynthesis.

6) Moisture

Any plant needs water, and the frequency and amount of watering depend on many factors, including temperature and light, the age, size, and growth stage of the plant, and the water-holding capacity of the medium. Please adjust the pH value to between 5.5-6.5 when watering. 

7) Nutrients

The growth and development of cannabis plants are inseparable from fertilizers, including macroelements N-P-K and other medium and trace elements

Whether you are a growing expert or a beginner, as long as you master the above plant growth parameters, you can grow high-yield and high-quality cannabis buds.

If you have any questions, please don’t hesitate to reach out to us!

And be sure to check out our other blog posts for useful tips on becoming a great grower!

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