The primary factor that influences how long it takes cannabis to grow is the strain. Choosing a fast-growing strain can shorten the time considerably.
Length Of Each Stage Of Cannabis Cultivation
The flowering (or bloom) stage begins when you switch your lights to a 12 hours on and 12 hours off schedule and continues until harvest. As mentioned, your plants will double in size during this stage of growth.
Let’s break the time it takes cannabis to grow down into the different stages, so you can get a better idea of how long each stage takes.
As you probably know, the life cycle for all marijuana plants is separated into two parts: the vegetative stage and the flowering stage.
With a well-chosen strain and a good setup, one can harvest several ounces of buds in less than 4 months indoors, which is nearly impossible to do outdoors in the same timeframe.
2.) Choose A Quick-Finishing Strain of Marijuana
Now if you're starting with a good soil (Fox Farms Ocean Forest soil is a proven choice), you may not need to supplement any nutrients for the first 3-4 weeks, as the nutrients you need are already in the soil.
5.) Grow Indoors
Plant strain – strain has the largest impact on growing time.
The complete guide…
There is no point in adding the ideal amount of nutrients if your plants cannot absorb them fully. You must check the soil regularly to ensure it is at the right pH level. Keep the soil between 5.8 and 6.5 on the pH scale; the perfect pH for cannabis is 6.0. The soil’s pH level impacts your cannabis plant’s ability to absorb nutrients. In most cases, a pH imbalance is the cause of toxicity or nutrient imbalance.
The sheer array of equipment available to cannabis growers means it should, in theory, be easy to produce a bountiful harvest. New technology means you can grow dozens of plants in a small area, assuming you have a commercial license. Otherwise, you need to get the most out of a handful of plants, or the time you invest will amount to very little.
4 – Lighting
Above all, make sure there is never more than an 18 degree Fahrenheit difference between day and night temperatures. For example, if the temperature is 72 degrees during the day, it should not go below 54 degrees at night. Also, use the lower end of the temperature scales above if you live in an area of high humidity.
Keep an eye on your plants during the growing season. Increase your feeding schedule if the plants have light green leaves. Cut it back if the leaves have brown edges and its tips start to curl back. Home growers can also add compost tea to plants to aid bud growth.
2 – Achieving the Perfect pH
For reference, you can expect to grow up to two ounces if you use a 200-watt CFL lamp in a standard grow cabinet measuring 3.5 x 1.5 x 6.5 feet. However, experienced growers may receive double the yield. If you use a 250-Watt HPS lamp in a room of the same size, you could get up to five ounces or double that amount if you have prior experience.
For the record, the ideal scenario would include the following: