Connect with us


What’s the Best Temperature for Flowering Stage of Cannabis?

The entire life cycle of your cannabis crop depends on its exterior environment. Plants are extremely sensitive to the amount of temperature, light, and humidity they receive. If any of these aspects are lacking slightly, the plants may end up being stunted in their growth process. If there is an excess of any of these …

What’s the Best Temperature for Flowering Stage of Cannabis? Read More »



The entire life cycle of your cannabis crop depends on its exterior environment. Plants are extremely sensitive to the amount of temperature, light, and humidity they receive. If any of these aspects are lacking slightly, the plants may end up being stunted in their growth process. If there is an excess of any of these features, the plants could end up not making it to harvest time. This is why it is crucial to provide your cannabis plants with the prime environment for thriving and abundance. Maintaining the best temperature for flowering cannabis will either make or break your entire crop.

The Importance of Temperature for Cannabis Plants

Achieving optimal temperature levels will ensure that your cannabis plants have the best chance at an abundant life cycle. A temperature that is too low may wilt your entire crop and cause you to have to begin growing all over again. On the other hand, too high of a temperature may limit the amount of flower your plants produce. The resulting flower might also not be as powerful as it could be.

Any cannabis connoisseur knows that reaching an ideal temperature in your cannabis’ grow area is necessary in order for the cannabis to photosynthesize. Photosynthesis can be thought of as a macro-process that consists of many other micro-processes. Temperature is one element that is crucial in order to initiate photosynthesis. A plant’s surrounding temperature can either accelerate or decelerate the overall rate of photosynthesis. The internal reactions spurred by photosynthesis are spawned by enzymes that require specific temperatures to work optimally. In other words, plants that are provided with optimal temperature levels will grow more effectively because they will be able to photosynthesize more effectively.

Growers often tend to overlook the dangers of hot temperatures, as cannabis plants can survive longer in temperatures that are too hot than they can in temperatures that are too cold. However, a hot environment provides a perfect breeding ground for pests and disease. Mold can grow on your plants in a hot, humid environment, making your plants toxic. Pests can also contaminate or eradicate your entire cannabis crop. Alternatively, cold temperatures can kill your cannabis plants rather quickly. Cold temperatures can also diminish the rate your plants photosynthesize. Your plant’s outcome truly depends upon achieving the ideal cannabis flowering temperature.


When Does The Flowering Stage Begin?

Even though “flowering” is in its name, actual flowers are not required for your cannabis crop to be considered to have entered into the flowering phase of its life cycle. It is important to note that during this time, your plants will experience an increased sensitivity to external factors. Cannabis that is grown indoors will begin to enter the flowering stage when the plants notice alterations to the amount of light they receive, simulating the onset of winter. During this time, plants will begin to receive 12 hours of light and 12 hours of darkness each day. Shorter days will signal your cannabis plants to start making their buds. The increased amount of darkness can increase the plants’ growth, sometimes even rapidly. Some cannabis crops may grow twofold during their initial stages of flowering.

The Best Temperature for Flowering Cannabis

More generally speaking, your flowering cannabis crop should be kept at a temperature between 77–82°F (25-28°C) during the day. Other stages of the growth cycle may require you to keep your crop at around 85°F or more. However, lower temperatures during the flowering stage will encourage more potent, aromatic, and faster growing buds. At night, cannabis plants should be kept at cooler temperatures 73-78°F (22-26°C) in order to mimic the temperature fluctuations they would experience outdoors daily.


Some certain cannabis strains might also begin to take on slightly deeper, colorful hues when grown at a lower temperature. This can end up producing some pretty eye-appealing buds when it comes time for the harvest season. The color of the hues, however, mostly relies on the genetic components of certain cannabis strains. For example, indica-dominant strains like Blue Knight can produce deep blue or purple hues.

Maximize Cannabis Plant’s Terpene Content

Terpenes are compounds made within the same glands that produce Tetrahydrocannabinol (THC) and Cannabidiol (CBD), the cannabinoids we all have come to know and love. Terpenes originally formed as an adaptation to predation. These oils are responsible for the aroma and characteristics associated with your individual cannabis crop. Some terpenes elucidate feelings of relaxation, while others promote energy and focus. In order to preserve your plants’ terpene content, the temperature of your environment around week eight should be pretty close to perfect. This time is when terpenes will enter into an important phase of their development. Too high temperatures will reduce or altogether eliminate your plants’ terpene content.

In order to maximize your cannabis’ terpene content, lower the external temperature accordingly during the dark cycle of your plants’ entire light cycle. Having naturally cool night time temperatures will ensure your cannabis flowers achieve their ideal terpene content. Terpenes can be attributed to both your cannabis flowers smell and taste. More terpenes means more potent bud. To ensure this, do not let the surrounding nighttime temperatures drop below 73°F (22°C).

purple cannabis strain

The Impact of Temperature on Your Plant’s Color

A cannabis plant’s terpenes also affect the resulting color of both the buds it will produce. These oils require adequate flowering phase temperatures, so that they can activate vivid colors in the cannabis plants like deep purple, blue, or even light pink.
This underlying colors of your cannabis will always vary from strain to strain. If you want to bring out the best in your cannabis crop, ensure that you provide them with the best temperatures possible. A cannabis crop is only as good as its grower!

Tips For Maintaining Ideal Temperature During the Flowering Stage

The entire flowering stage typically takes about a two months, give or take a few weeks depending on the plants. Most plants will not be ready for harvest before month two, but this varies. You may need to play around with the temperature a bit to see how your plants respond, especially if you are a first time grower and are still figuring things out. It is also worth mentioning again that temperature does not work separately from the amount of light, humidity, and other external environmental factors your cannabis plants will depend on for their growth. The amount of carbon dioxide you will need to expose your plants to will also vary depending on temperature. Be sure to invest in some quality tools that will accurately measure these levels so you know exactly what conditions your plants are being exposed to daily.


During the flowering stage, look out for signs of excess heat or light like foxtailing. In order to maintain ideal temperatures during the flowering stage, be sure you are up to date on research surrounding the optimal temperatures for cannabis’ different stages of life. Air on the cooler side for the second half of the crop’s flowering phase to ensure the preservation of terpenes. This will guarantee you a potent and colorful bud well worth all of the effort you put into it.

Continue Reading