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what temperature does cannabis grow best at

What temperature does cannabis grow best at

Marijuana plants can grow and survive practically anywhere regardless of the climate, hence the nickname “weed.” However, they will struggle and likely not produce desirable effects if the temperature is too hot.

About Too Hot for Pot?

During the flowering stage, however, the ideal temperature to grow marijuana plants can be a little colder. The temperature should be kept between 65-80 degrees Fahrenheit (18-26ºC). The second half of the flowering stage is when the temperature should be at its coolest. This helps your marijuana plants produce flowers with rich color, as well as increased trichomes, denser buds, and more potent smell.

How to grow marijuana in extremely high temperatures

If you are growing marijuana in a grow room, keep in mind, the maximum temperature for marijuana grow tent success is 85 °F. Temperatures higher than this will result in the plant’s death.

What temperature does cannabis grow best at

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.

Again borrowing from Royal Queen Seeds expertise, here’s a how-to on drying your valuable crop:

As you probably already know, after choosing a substrate (the material you’ll be growing your plants in/on), the strain(s) of cannabis you’ll be growing, lights, watering mechanisms and nutrients needed, the most important element of your day-to-day operation will be managing temperature and humidity.

Dry Trimming

To start with, relative humidity is determined by how much water vapor the air can hold at a specific temperature. Warm air can hold more water than cold air, so the warmer the air is, the higher the relative humidity will be .

On behalf of their customers, dispensaries are looking for consistent quality and a range of products. So while the opportunity to run a lucrative and stable growing business has increased dramatically, there is more and more pressure for growers to produce a consistently high-quality product in order to turn increased demand into increased dollars.

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.

Curation

While not strictly a necessity, the following can have a direct impact on yield, flavor and appearance:

Though it may be exciting to see the fruits of your labor as you begin harvesting, the work is far from done. Correctly processing your crop helps prevent any chances of it becoming damaged or rendered non-smokeable. Proper drying and curing are essential to minimizing the risk of mold contamination and it also greatly improves the taste when smoked.

What temperature does cannabis grow best at

Flowering Stage: 65-80°F (18-26°C)

Cannabis generally prefers slightly cooler temperature at night, and warmer night temperatures will tend to slow down upward growth. But… you can occasionally use this knowledge to your advantage to help control plant growth!

How to Control Temperature in the Grow Room Step-By-Step

That model works pretty well, but next is the temperature and humidity monitor that I use primarily. The humidity number is more prominent on the screen because it was initially made for incubating chicken eggs (humidity is critical to egg hatching rates). I’ve found that many thermometers slowly die from the heat of a grow light, but this particular one seems to keep on trucking despite the extreme environment. I bought my first one over 5 years ago, and it still works great.

7 Essential Concepts About Temperature Control

LED Grow Lights

Tip: Use Temperature to Help Control Growth!

But, if you do have the height to accommodate an MH/HPS light, I highly recommend going for that over CFL grow lights. In my opinion, CFL grow lights a best in very short/tight spaces where ultimate stealth is the biggest goal.

Temperature & Humidity Adjustment Cheat Sheet

For a lot of indoor growers, that is all you need to worry about. If it feels too hot or too cold for you in your grow area, it’s probably too hot or too cold for your cannabis plants as well.

Although those are general guidelines, plants can thrive at different relative humidities depending on the temperature of the air.