Cannabis is a high-value plant that has come to be primarily cultivated indoors due to its high sensitivity. Each stage of cannabis growth requires a specific kind of tune-up to achieve optimum growth and obtain high-quality yields. Humidity not only plays a roll in the growth of this incredible plant, but also in the proper curing of cannabis, and in proper storage containers and conditions while in storage.
What Factors Affect Relative Humidity Control For Cannabis?
The sugars produced in the photosynthesis process must be converted to energy used to support plants’ growth. To convert the sugars, mainly glucose to energy and oxygen, later released to the environment, the cannabis plant must acquire carbon dioxide from the environment.
Why Is Humidity Important For Cannabis Plants?
In conclusion, it can be said that humidity is an essential condition in the growth of cannabis plants. Always start with a high relative humidity of about 70% for your cannabis seedlings and reduce the moisture gradually until the plant is ready for harvest, where the humidity should be around 40%.
You may be tempted to speed up the drying process but it has been shown that slow and steady wins the race. Rushing the process and exposing your crop to high temperatures will almost certainly reduce the quality, and result in diminished flavor and even potentially a “poor and uncomfortable high.” Good luck explaining that to your investors or to a discerning dispensary that has numerous growers vying for their shelf space.
Widely regarded as the preferred method, “wet trimming” offers the most control and quality assurance. It also has the added benefit of allowing you to collect the “sugar leaves” which contain lower cannabinoid levels and can be stored separately to be processed into edibles at a later time. Remember that “High THC; low Cannabinoid level oil” states list from before? This is where that product comes from.
Depending on your lighting solution, season a specific crop is grown in (assuming year-around production), the outdoor air vented in (as it will vary in temperature and its own relative humidity), controlling temperature and humidity in your growing space will be one of the tougher challenges you will face on a day-to-day basis.
Here again is the equipment you can use to help you attain these levels:
Investors are flocking to the marijuana industry, seeing it as one of the safest long-term bets in recent history. Many of them are directing their investments toward dispensaries rather than growers, according to Scott Greiper, president of Viridian Capital Partners.
The increased humidity levels allow seedlings to take water in through the leaves while their root systems are developing.
Pure n Natural Systems specializes in the sale of commercial and industrial humidifiers, dehumidifiers, drying fans, air movers, and portable heating and cooling solutions. We have the equipment you need to make your growing operation a consistent success. And as we’ve already discussed, consistency is king.
Wet Trimming versus Dry Trimming
Again borrowing from Royal Queen Seeds expertise, here’s a how-to on drying your valuable crop:
To get started, you’ll want to buy a hygrometer and a thermometer. With these tools, you can accurately monitor and then alter humidity and temperature conditions in an attempt to strive for repeatable quality levels time and time again.
Evidence in archeologic records show the domestication of Cannabis started as long as 8,000 years ago in both East Asia and Europe. Despite the long history Humans share with the Cannabis plant there is still dispute about the taxonomy and whether it is one species: Cannabis Sativa or three: C. Sativa, C. Indica and C. Ruderalis. Regardless of this dispute, one thing is clear about Cannabis; there are over 3,000 different genetic varietals and it has an astounding amount of tapped and still untapped potential in the medicinal, nutritional, industrial and recreational markets.
What is the ideal temperature and humidity for an indoor grow room?
Because of this incredible genetic diversity, ideal growing conditions depend on the varietals that are being cultivated, what characteristics the grower is looking to achieve (maximum biomass creation, specific cannabinoid or terpene expression) and the facility design that is utilized (lighting type – LED vs HPS/CMH, single tier vs vertical racking, indoor vs greenhouse, etc).
Temp and Humidity Settings by Grow Room Type
Based on our experience working with growers across the US and Canada, here is our general rule of thumb for temperature and relative humidity set-points we recommend for Cannabis cultivation and manufacturing processes. Bear in mind there are many factors at play – lighting choices, genetics, budget and risk tolerance, just to name a few – that can change these recommendations.