Flowering Stage

Learn the secrets of the last growing stage…

How To Marijuana Grow – The Flowering Stage

After the germination of your marijuana seeds and following the vegetative state. Your plants will enter the flowering stage. During this stage the little white “pistils” that appeared at the end of the vegetative state will begin to evolve. And buds or “flowers” will flourish at the nodes of the plant.


How Long is the Flowering Stage?

Similar to the vegetative stage, the flowering stages time may vary depending on the strain being grown. The average flowering time is 2-3 months. However some may take as little as one month, while others 4 months.

The plant size is dictated mainly by the marijuana strain chosen. There are two visual cues to watch for that indicate the flowering stage to begin. Those cues are little white hairs growing where the branch and stem intersect, and when the plant is 20 inches in height.



Light Schedule for Flowering Stage

Before using your lights, ensure that they are correctly placed, no more than 2 feet above the plants top. Keep an eye throughout the flowering stage and throughout your plants life that the lights remain a distance of 2 feet from the top of the plant. This distance ensures the safety and happiness of your plants. Plants too close to the lights run the chance of overheating or burning the plant.

With the exception of only auto-flowering varieties, the flowering stage is triggered by adjusting the marijuana plants light schedule. In the vegetative state, the plant should have received 18-24 hours of either high intensity artificial light, or natural sunlight a day. To trigger the flower stage, the light schedule is adjusted to 1:1 ratio. 12 hours of both sunlight and darkness.

Although it is up to the growers personal preference. Some growers prefer to ease their plants into this new light schedule. For example, they will extend the initial time of 6 hours by 2 hour increments allowing the plant time to adjust. No matter the method you choose to adjust your lighting schedule for the flowering stage. The lighting time must be absolute. Should you need to do any work during the dark time, use green wave length bulbs. Any other light used during that time will confuse the growing plants, causing them stress and possibly harming the plant.

Experienced growers will tell you to keep the “dawn” time the same when adjusting the lighting schedule. For instance, if your lights came on at 7am for the 18+ hours of vegetative state. Then your lights will still come on at 7am for the flowering stage.



Nutrients for Flowering Stage

The nutrient plan should be revised for the flowering stage from the vegetative stage. This is to adjust to the new nutrients needed, and nutrients no longer needed.

Nutrients before Flowering Stage 

While the plant is in the vegetative state, the nutrients needed will be compiled mainly of nitrogen, phosphorus and potassium. As soon as the flowering stage has commenced, nitrogen levels will be reduced. While phosphorus and potassium levels will be increased. Bloom fertilizers (phosphorus + potassium) provide the marijuana plant with what it needs most during this stage.


Less Nitrogen, More Phosphorus and Potassium

While the marijuana plant is in the flowering stage, most of its efforts are going to those future buds growth and progress. Though some of that effort in the initial 2 weeks is still directed at overall growth. Now some growers choose to still provide their plants with a nitrogen, phosphorus and potassium mix until the third week of the flowering stage. While others immediately switch to a phosphorus and potassium mix as soon as the flowering stage begins. If the latter is chosen, your plants won’t see much more growth at this stage. Which, if your running out of room, could be a good thing to switch right into that phosphorus-potassium mix when flowering begins!

Take care with the addition of fertilizers. Over fertilizers can affect the taste of your marijuana, leaving an undesirable taste in the buds. There are instructions on the bottles for good reasons. Follow them. And should your plants experience any discomfort during the flowering stage, eliminate any possible factors before you increase the nutrient supply.



Air Quality 

A little secret, the more c02 accessible to the marijuana plant, the more tolerable they are to the heat in the room and the faster they will grow!

Alongside c02, constant airflow must be considered (or reconsidered). Since the plants are larger in size, and probably getting into close proximity of each other. It is essential that air containing both c02 and oxygen be able to circulate like a natural breeze throughout the plants. You can get an air flow mimicking a natural breeze by situating fans around the room containing the plants. Please note fans should never be pointed directly at a plant.

Fans also aid in reducing the humidity in the room. While the plant is in the vegetative state, you want the humidity to be around 60-70%. However in the flowering stage the humidity should be lowered to 40%. This can also be done in increments, slowly lowering the humidity level each week. Or another route is to do this quickly with the help of a dehumidifier. This quick method gently stresses the plant, supporting resin production on the buds.



Flowering Stage Chapters

The Flowering Stage may be broken up into 4 chapters: 

Chapter 1

The flowering stage begins when little white hairs are growing where the branches of the marijuana plant and stem intersect. This stage of early development show cases that bud development has commenced.

Chapter 2

The second chapter focuses on the development of those tiny white hairs over the next 1-3 weeks. You will find them begin to flourish in the nodes that grow from the corners of the branches. Here the Calyxes (the actual flower of marijuana) begins to grow. A surplus of supportive leaves grow, as well the resin glands, known as trichomes begin their development.

Chapter 3

The third chapter sees dense, thick buds, loaded with trichomes. The attractive cannabinoids, THC, CBD and others are encompassing the bud inside and out. Plants will put on a considerable amount of final weight during these 2-5 weeks. Again, keep an eye on your lights. Are they too close to the top of the plant? Overheating your plants will cause them to “fox tail”. Leaving your buds airy and the overall potency reduced.

Chapter 4

And the fourth chapter is getting close to harvesting time. With the flowering stage coming to an end, you will see that the white hairs are deteriorating, beginning to curl and turning dark in colour. Trichomes will turn white, and resin coating the leaves and buds will turn amber. When about 70% of the hairs have turned white, and most the resin is amber, it’s time to harvest your crop. If you wait much longer, the buds will over ripen.

Experienced growers will tell you to cease the supply of nutrients to your plants about 1-2 weeks before harvesting. By supplying your plants with only neutral PH water for the remaining time, you are flushing out any remaining nutrients the plant may contain. Thereby only improving the taste of your buds!

How To Grow Marijuana

Learn how easy it is to grow marijuana in your home. Our marijuana grow kits have everything you need to get started today.

Marijuana Seed Germination

Learn how to germinate marijuana seeds to grow beautiful marijuana plants right in your home. Remember, its all about the ladies.

Marijuana Nutrient Schedule

Learn how to keep your babies strong and healthy during both the veg state and the flower state. Remember to flush your babies.

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