Why Temperature is Important for cannabis growing?

Marijuana or Cannabis or hemp. Indoor growing room or greenhouse. They all need the right temperature to achieve the best growth and yield. Too high or too low temperature will reduce photosynthesis, which is the ability of plants to make food for themselves and promote growth. In general, the air temperature needs to be between 72 ° and 80 ° F, but if carbon dioxide injection and additional grow lighting are used, the air temperature may rise to 85 ° F. Soil temperatures of 72 ° to 75 ° f are also important for rooting clones. Using environmental control computer to control temperature is the most accurate, especially in large-scale planting operations.

Of course, the temperature of marijuana is also different in different growth stages. The temperature in the cloning environment should be between 70-78f and the relative humidity should be between 75-90%. Vegetative stage prefer a temperature in a range from about 68 to about 77 degrees F. When they are flowering, cannabis plants like a range of about 65 to 85 degrees F.

Temperature too low (cold)

The lower the temperature, the slower the growth rate. If the temperature is below 60 degrees Fahrenheit, marijuana will even grow at low temperatures. Some plants continue to grow in a cold environment without any signs of stress, but if there is sufficient light, their yield usually does not reach its due level.

When the weather is cool, plants are also more sensitive to certain types of mold, especially in wet conditions. Sometimes, when the frost melts and the plants are full of water, they will become moldy.

Colder temperatures and significant temperature fluctuations will lead to excessive purple of leaves and reduce photosynthesis.

The temperature is too high

Too high a temperature can cause plants to grow slowly.

Please note that temperatures higher than 80 ° f (26 ° C) during flowering will slow down the growth of buds and may cause buds to become ventilated and loose. High temperatures also reduce the potency and odor of flower buds. In the flowering / budding stage, it is particularly important to control the temperature of the growth chamber!

Cannabis is also more susceptible to many problems at high temperatures, including spider mites, powdery mildew (especially in wet conditions), root rot, nutrient burning (due to increased water transpiration), increased extension, and withering due to lack of oxygen in the root system