Blooming stage in Marijuana plants: a guide for beginners


  • Author Darren Chan
  • Published August 19, 2020
  • Word count 1,004

In this write-up, you'll locate info concerning the Marijuana flowering, week by week, with images and images. The flowering phase in Marijuana plants is the duration when they expand their buds. After some weeks of vegetative growth, Marijuana plants will be able to flower when the photoperiod switches over. Learn how to take care of your plant in this stage to collect top-quality buds!

When does the Blooming phase start?

Flowering stage outdoors

Growing outdoors, plants will start the flowering phase when the days expand much shorter, usually when Autumn is coming.

Blooming stage indoors

For Cannabis plants to enter the blooming stage in indoor plants, the photoperiod must be changed to 12 hrs of light/ 12 hours of darkness timetable.

Autoflowering stress doesn't require a photoperiod modification to begin blooming, their vegetative phase lasts around four weeks, and afterwards, it switches stages instantly.

How much time does the blooming stage take?

The period of the blooming stage differs amongst different stress.

The blooming phase in Cannabis plants typically goes from 8 to 11 weeks, relying on the strain. It's typically split right into weeks or 3 steps. The blooming period for Indica strains is usually around eight weeks, yet it may use up to 10 weeks. Sativa stress might occupy to 10-12 weeks. Usually, crossbreed strains will use up to 6-10 weeks to create.

How do I recognize if my plant is male or female?

Right here's a quick aesthetic guide on how to inform if your Marijuana plant is male, women, or hermaphrodite. For more details and also ideas on just how to find out, read our full post on identifying the sex of a Cannabis plant.

Basic expanding requirements for blooming Cannabis plants


Light is essential in every phase in the Cannabis plant life cycle, but in the Flowering stage is vital maintaining a Photoperiod: 12 hrs of light/ 12 hrs of darkness. Do not disrupt the dark periods by opening "just for a sec" your expanding environment. Light contamination might create your plant to reduce the budding process or even to revegetate (return to veg phase) or begin generating hermaphrodite blossoms.

Temperature level

Marijuana plants in the flowering phase prosper in temperature levels around 18 °-- 26 ° C. Consequently, temperatures below this array might negatively impact the plant or even kill it if it's revealed to freezing temperature levels for an extended period. Temperature levels under 17 ° C might slow the plant's development as well as shallow temperatures (under 2 ° C? )may harm the plant irreversibly. On the other hand, heats additionally affect the plant adversely. Temperature levels over 28 ° C might cause problems such as stunted growth, burnt leaves, too heavy evaporation of water, extreme dryness, etc.


Moisture As well as keeping temperatures within those "warm" arrays, dealing with the relative humidity in the growing environment is vital. Family member humidity procedures just how much moisture is present airborne revealed as a portion.

Moisture should be maintained ideally between 40-50% in this phase Greater degrees of humidity might trigger troubles such as mold and mildew as well as fungi.

Nutrients for Marijuana plants in the blooming phase.

The major nutrients that the Marijuana plant needs to establish are Nitrogen (N), Phosphorus (P) as well as Potassium (K).

When the plant starts to bloom, the concentrations of P and K must be increased progressively, while the N concentrations are lowered. That is why there are specific fertilizers for vegetative growth and flowering.

Other secondary nutrients will be necessary for the correct development of the plant. These are Magnesium (Mg), Calcium (Ca), and Sulfur (S). Finally, the micronutrients are necessary but in a minimum concentration. These are Zinc (Zn), Manganese (Mn), Iron, (Fe), Boron (B), Chlorine (Cl), Cobalt (Co), Copper (Cu), Molybdenum (Mb) and Silicon (Si).

So which is the best feeding plan or nutrient application schedule for my plant? That's up to each grower, but bear in mind you'll need to add these nutrients via foliar, liquid, or solid fertilizers. Even when growing organic, usually having your plant in plain soil is not enough for the plant to produce big fat buds.

Several brands of fertilizers offer fertilizer kits specially formulated for each stage with the necessary nutrients. Start with the dose indicated by the manufacturer or even 1/2 lower to avoid saturation and gradually increase the amounts until the desired results are achieved.

Watering Water your plant regularly with clean, safe, and water. Certainly, using chlorine-free or filtered water leads to better results. Always avoid overwatering and watch for good drainage. How to know when to water a Cannabis plant? A good test might be to stick a finger down a few cms or an inch into the soil and if it's dry, then you'll know it is time to water.

Ventilation and airflow are key for Cannabis plants to thrive and grow healthy. In this stage, they need air not only to breathe and grow their bodies but also good ventilation to avoid the formation of mold, fungi, and rot. A good fan moving the air inside your growing environment helps a lot, but beware not to point it directly to the buds. An exhaust fan is great for increased ventilation and air movement, this also helps lowering humidity. If the exhaust fan is not enough, a dehumidifier is definitely the best and easiest solution for keeping humidity at the range.

pH levels must remain between 6.5 and 7 when growing in soil. Most nutrients are available for the plant in the growing medium only between this range of pH. pH levels out of this range may cause your plant to experience nutrients deficiencies and toxicities because the nutrients may be in the soil but the plant can not absorb them.

Container size The size of your container is always related to the plant's size. Are you growing in your garden soil? In pots with soil? In buckets? Hydro? The bigger the container is, the more chances of getting a bigger plant you have. Remember to transplant your tree before the flowering stage begins to avoid stressing the plant or accidentally damaging it.

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