Growing Marijuana:How to Manage Temperature in the Environment
Growing marijuana plants indoors offers a whole range of possible benefits. For one, it allows you cultivate strains for which you have always had a preference. But outside your choice of strains, you have no significant control in terms of plant genes. What you can control, however, is the environment, including temperature.
As any expert marijuana grower would tell you, temperature is crucial to the plant’s ability to thrive. Even with just the right levels of light, your cannabis can still get spindly if temperatures are not right. Ideally, your grow room should be from 73 to 82 degrees Fahrenheit, or 23 to 28 degrees Celsius). To help you in monitor these levels, you need a thermometer of decent quality. From time to time, make sure to take note of the highest and lowest temperatures in your grow room: these fluctuations are highly important, being the main factor in internode growth. The more the temperatures fluctuates, the more the cannabis will sprawl.
The adjustment of day and night temperatures for the control of plant growth is known as the DIF technique. If day temperature is higher than night temperature, you get a positive DIF. As the DIF becomes more positive, the distance between the nodes of the leaves and stems grows bigger as well. You have a negative DIF when night temperatures are higher. This will delay growth, and limit internodular distance. To ensure that plants continue to grow, albeit at a slower pace and with short distances between the nodes, you need to maintain a positive DIF.
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A negative DIF can, in fact, completely obstruct growth. Commercial growers and farmers use this method from time to time to make certain crops “wait” so they can harvest everything at once. You may not wish to do this, but the information is nonetheless of valuable. If you do decide to stall your plants’ growth by applying a negative DIF, do it very carefully, as : humidity can rise very in a room with lights off. Your grow room should be well ventilated to prevent the growth of mold.
The ‘morning pulse’ is an alternative option you have. This is done by allowing the temperature in the room to go down drop by a couple degrees within the first two to three hours of turning the lights on, then maintaining a positive DIF later on. This will bring an effect that is similar to the negative DIF, but without worries about increasing humidity.
The easiest way of applying this technique is by using an air conditioning unit or a temperature-controlled fan. The bottom line is, if you set the temperatures right, you can stop the steps from stretching too much and being damaged.