How Long Does Flowering Stage Take

Understanding the

cannabis flowering stages
can be catchy, but with practice information technology becomes more (dare I say information technology) natural.

Take the time to acquire the fundamentals and practice; once you know what yous are doing, information technology gets easier over time.

I can’t say this plenty:

The marijuana flowering phase is essential to the life cycle of a marijuana plant.

The Marijuana Flowering Stages:

  • The Stages of Flowering Week by Week
  • When to Flower Cannabis: How to Trigger the Flowering Stage
    • Autoflowering Cannabis Strains
  • What Do Buds Look Like When They Commencement to Grade?
    • The First Signs of the Flowering Phase Outdoors
  • Maintaining Salubrious Plants While Flowering Cannabis
    • Do not overfeed your plants
  • The Second Calendar month of the Cannabis Flowering Phase
    • Support your favorite lady
  • Identifying the Sex of Your Plants
    • Female First Signs of Flowering Phase
  • Conditions in Your Grow Room
    • Signs of a Problem While Flowering Marijuana
  • Pruning Your Plants During Flowering
    • Cannabis Defoliation
  • Watch those pH levels While Flowering Weed
  • Preventing Nutrient Burn
  • The Last 2 Weeks of Flowering: What to Expect
  • Preparing Your Plants for Harvest
  • Know When to Harvest
    • A quick guide to harvesting
  • Frequently Asked Questions Nigh Cannabis Flowering Stages

This guide volition teach y’all about this stage so that y’all tin exist a better grower.

It will also explain each heady milestone and provide tips on how to optimize this time to produce potent buds and high yields.

Keep reading or jump alee to your favorite department.

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Subsequently an unabridged season of caring for your marijuana plants, it is reasonable to think you can relax during the flowering stage of their life cycle.

This, nonetheless, is one of the worst things you lot could practise, every bit this stage needs just as much attention – perhaps even more than the earlier stages.

During the vegetative stage, a cannabis institute grows just like its common proper noun – a weed! It was simply concerned with growing new stems and leaves and did so quickly.

The vegetative stage is straightforward, and perchance one of the easiest times for a grower.

During that time a marijuana found can recover from just about annihilation.

If you happen to run into problems (such every bit an infestation or injury), you lot can nurse your plant dorsum to wellness with a niggling TLC.

But the cannabis flowering stage is not equally like shooting fish in a barrel.

Not just do cannabis plants grow differently, just they are as well a lot more than sensitive.

Here is when all your preparation is going to be put to the test considering there is very piddling room for error.

You’ve already invested so much time and effort into your plants, don’t ruin the harvest this late in the game.

When Does the Flowering Stage Begin?

Despite the name, the cannabis flowering phase doesn’t offset with the formation of flowers.

Flowering occurs a few weeks into the flowering stage. In fact, it doesn’t even correlate to when y’all induce flowering.

In fact….

The flowering stage begins when the cannabis plant notices a change in lite. This is how it knows wintertime is coming.

Many people mistakenly retrieve that this modify ways a decrease in light.

Actually, the change is measured by an increase in the amount of continuous darkness.

Before long after the strain’s threshold of darkness is met, the constitute will abound rapidly, gaining height and stretching.

Some weed plants may fifty-fifty double in superlative during the starting time two weeks of the flowering stage.

The Stages of Flowering Calendar week by Week

‘In most strains, the first signs of female flowers appear one to 3 weeks later on introducing flowering with the 12-hr photo menstruation.’ ~ Jorge Cervantes

In the first 1-3 weeks a plant volition produce new stems and leaves, simply at the end of the month that growth shifts to bud formation.

The beginning of the flowering stage is dedicated to growing all the necessary parts for a bountiful harvest; any problems during these crucial weeks volition impact a plant’southward yield.

Flowering Stage Begin

If plants are grown outdoors, when your weed plants blossom depends on the time of the twelvemonth and your location.

Some strains may start the flowering phase earlier, while others may have an extra-long threshold for darkness, causing them to stay in a vegetative country longer.

If you lot are growing indoors, changing your abound lights will trigger the change.

At the showtime of the flowering stage, the internodes (those spaces between the leaves) decrease, and the plant’s growth slows downward.

It will go on to grow upwards. Information technology may seem like your weed plant stopped growing, but in that location is a lot of growth occurring in those starting time few weeks.

Pay conscientious attention and give your cannabis plants the right amount of nutrients at this time.

When to Flower Cannabis: How to Trigger the Flowering Stage

If you lot are growing outdoors, the flowering stage will begin naturally. However, sometimes you might want to induce flowering.

Why would y’all do this?

Perhaps, you need your cannabis plants to terminate growing sooner (for whatever reason).

Inducing the flowering phase tin help you harvest sooner.

In this case, you volition merely simulate darkness for 12 hours a day so that your cannabis plants know it is fourth dimension.

A blackout canvass over your plants or greenhouse tin be used outdoors to simulate darkness.

Trigger the Flowering Stage
Trigger the Flowering Phase

Growing indoors is unlike.

In an indoor setup, the flowering stage will not brainstorm naturally. You provide sunlight via artificial lights and change the lighting schedule to showtime the phase.

A wheel of 12 hours of darkness and 12 hours of light will tell the plant that information technology is time to bloom.

But there’s a catch.

You lot’ll need to ensure your plants receive admittedly no low-cal for 12 uninterrupted hours.

If that darkness is interrupted for even a few seconds, your plants may delay flowering, or become hermaphrodites.

You may also need more or less than 12 hours of darkness, depending on the strain. Some strains need equally much equally xiv hours of darkness!

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Autoflowering Cannabis Strains

Autoflowering strains are the exception to this procedure.

They don’t demand continuous darkness to brainstorm the flowering stage. Instead, they start subsequently a predesignated amount of fourth dimension.

That’due south not all …

These strains grow faster equally well.

The vegetative stage of these types of strains typically lasts for iii-four weeks, pregnant their flowering stage should brainstorm after around 1 calendar month of growth.

What Do Buds Await Like When They Starting time to Grade?

Not sure if the flowering stage has begun?

If information technology has, you’ll first to notice some interesting changes in your plants. It may take a couple of weeks, merely your plant will stop growing and start flowering.

You’ll run into that it is no longer producing leaves, but instead, pocket-size white pistils begin to grow rapidly along the surface of the plant.

You’ll besides start to detect flowers growing on the buds.

Here’due south the deal:

Now is the time to pay special attention to these flowers.

This is when your plants start to conspicuously reveal their sexual activity.

During this fourth dimension, males create a pollen sack, while females brainstorm to develop pistils.

The male person plants may as well continue to grow taller while the females do non. This is and so they tin can driblet their pollen onto the female person pistils.

Spotting the First Flowers

The First Signs of the Flowering Stage Outdoors

Let’s talk near sexual practice.

During this time, both male and female plants volition produce flowers.

Male flowers are smaller with a yellow, scarlet, purple or pale green colour while female flowers will take ii hairy, white stigmas.

If you want your cannabis plants to produce potent, THC-rich marijuana, pay attention during this time.

This is when y’all should look for those male plants and remove them from your garden. If they fertilize your females, information technology volition be too late.

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Only that’s not the only thing to look out for.

In addition to the emergence of flowers, y’all’ll also notice that the internodes have extended.

You may too see some leaves covered in a thin, transparent resin. It will wait like your plants are stretching and covered with dew.

This resin is a teaser of what’s to come but isn’t worth sampling nonetheless, so don’t become likewise excited only withal.

I can’t say this enough:

Exist patient!

By the end of the first month of the cannabis flowering stage, a transition stage where you enter the flowering stage, you lot may discover small clusters forming from the female flowers.

These clusters are called buds.

They are the same buds that you lot will eventually harvest (yay!), simply they are not quite ready.

You’ll need to exercise a bit more work earlier information technology is harvest time.

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Nutrients During the Start of the Marijuana Flowering Stage

You’ve entered the flowering phase, so pay attending.

Your plants volition need a unlike set of nutrients then before.

Phosphor and potassium are now the priority, and your plants volition need enough of it to keep up with all the rapid changes that occur during this time.

Unfortunately, many growers mistakenly increase these nutrients likewise rapidly while decreasing the nitrogen besides shortly.

Phosphor and potassium are of import, but so is nitrogen. If your plant does not get enough nitrogen, information technology could develop a deficiency.

Keep in mind,

The cannabis flowering stage is hard on marijuana plants.

Your plants are going to be very sensitive to both their nutrients and the surround, so go on an centre on them.

Pests and diseases could be fatal at this point, and there’south still at to the lowest degree a month to go.

Maintaining Healthy Plants While Flowering Cannabis

Here’s the deal,

Your plants should be full, lush and green when trying to form buds; otherwise, the quality of your harvest will endure.

Any discoloration (such as yellowing leaves from a nitrogen deficiency) or other signs of stress should exist nursed back to health before beginning the flowering stage.

If you use nutrients, utilise a flowering formula during the first month of flowering.

Do not change your nutrient solution until there are obvious signs of flowering. You should meet many stamens and pistils.

Use the right nutrients

Flowering formulas are designed to meet the high demands of the flowering menstruation, but a vegetative formula will make sure that your plants have the nutrients that they need to blossom successfully.

And so use the vegetative formula until you know yous are flowering for certain. Then one time you attain the flowering period only use them for the kickoff month, if possible.

Ensure the best nutrients for the flowering stage, check out my Bergman’s Plant Food fertilizer set for an all-in-i solution. Including a feeding schedule from seedling to flowering!

Do not overfeed your plants

Nutrients should not be used in the concluding weeks of flowering.

If you notice a few leaves falling off, do non be alarmed. This is normal, but just in areas where the establish is shaded (such every bit lower leaves).

These leaves practice not affair as your establish is now diverting its energy to the top of the plant and the formation of buds.

However, if you notice discolored leaves or a rapid loss of leaves, you may be giving your plants too much fertilizer, or information technology may accept a disease that needs firsthand attention.

Learn to recognize common marijuana diseases

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Grooming During the Get-go Signs of the Flowering Stage Indoors

If y’all’re growing indoors and program to train your cannabis plants, the starting time month of the flowering phase is the fourth dimension to exercise it.

Why would you do this?

Preparation helps maximize the space in a abound room, and it can also increment your final yield.

During the showtime of the flowering stage, the stems are flexible and tin can be bent without breaking. However, as the stage continues, they volition become woody and unable to exist trained.

Training during the beginning of the flowering stage
Preparation; get-go of flowering phase – Paradigm powered past

This technique of gently angle stems is called low-stress training. During this procedure, stems are aptitude and trained to grow outward instead of just up.

When practiced, it provides a apartment even canopy for cannabis plants so that more of the plant is exposed to its lite source.

People who successfully abound know how to train their cannabis plants.

Low-stress training can increment your yields by as much equally xl%. But remember to only railroad train during the commencement month of the cannabis flowering phase, while the plants are stretching.

The Second Month of the Cannabis Flowering Stage

As the flowering wheel continues, you’ll begin to see more leaves, branches, and buds. Everything will grow wider and thicker.

Your plant may even kickoff to look like a Christmas tree with the lesser leaves growing out farther than the pinnacle.

This is a adept sign of a healthy mature plant.

What’s actually going on?

The second calendar month is when cannabis begins to look ready for harvesting. The number of calyces on the plants continues to rise.

That transparent resin from the first month darkens and develops a strong odor. The buds expand and extend. My gratis niggling Harvest Guide PDF gives a perfect thought of when to cut your plants.

The Second Month of Flowering
The Second Month of Flowering – Image powered by

Support your favorite lady

All this growth can atomic number 82 to problems; if you lot are not prepared. Your plant will be begetting a lot of weight and may demand support to stay upright. Those colas are heavy!

What can you lot practise?

One manner to help it is with a trellis organisation made of string or wood. You lot could even utilize a metallic spring system that adjusts the weight of the plant as it matures.

That’s non all to look for.

You may also notice some of the lesser leaves turning yellow. This is because the establish is putting its energy into the leaves and buds that are getting the most direct calorie-free.

Most of your plant should still be light-green, however.

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What else can yous do?

Keep an middle on the airflow. Make sure your plants receive plenty of circulation during this time. This is peculiarly important when growing indoors.

Marijuana plants grow wide during this menses, and they have likely grown closer together. A lack of air flow can easily lead to mold, leaner and fungal infections.

Identifying the Sex of Your Plants

You lot may have already identified and removed the male marijuana plants before the cannabis flowering stage began, but that doesn’t mean yous are necessarily out of the h2o.

Scout out for sneaky hermes!

Information technology’s not uncommon for a hermaphrodite to develop during the flowering stage. These plants take male sex organs that will pollinate your precious female person plants. So check once more during the flowering stage to be certain.

Identifying the Sex of Your Plants
Identifying the Sex of Your Plants

Female First Signs of Flowering Stage

By the second calendar month of flowering, if at that place are any males in your garden, information technology’s nigh too belatedly.

At this point, the female person plants will exist producing pasty, THC-laden buds, that, if fertilized, the THC loses authority.

If you spot a male flower characterized either past their clearly male pollen sacs, or their yellow banana-like shape, remove the unabridged bud site to ensure no pollen escapes. Just 1 could fertilize your entire crop.

Why does this matter?

Unfertilized buds (“sinsemilla”) are highly valued by many marijuana users. These buds are more potent considering a fertilized female stops focusing its resources on growing its buds and volition grow seeds instead.

An unfertilized female person institute, on the other hand, will produce more THC than any other variety of plant.

This is simply considering information technology focuses more of its attention on vegetative growth rather than reproduction.

Males also produce THC, only at a much smaller book than the females.

Therefore, if you desire to grow the well-nigh potent buds, pay attention to the sex of your plants and keep your females unfertilized.

Conditions in Your Grow Room

Indoor growers accept unique challenges once the weed flowering phase is under way. Now that your marijuana plants have grown larger (and extremely close to each other), they need a different environment to say healthy.

Y’all’ll want to accommodate the air temperature, and humidity in your grow room to prevent disease and encourage vegetative growth.

Conditions in Your Grow Room

When in that location is light, continue temperatures between 68ºF and 77ºF (20ºC and 25ºC) nigh the foliage and 68ºF (18ºC) at the roots.

Remember, college temperatures crave accordingly higher levels of carbon dioxide. In darkness, you tin allow the temperature driblet downward to about 68ºF (18 degrees Celsius).

At the beginning of the flowering phase, lower the humidity to effectually forty-50%. You tin drib it to 30% or more the second month to force the buds to produce more resin.

This is lower than what was needed during the vegetative stage, and it is essential to the success of your cannabis plants when growing indoors.

The humidity must remain below 50% during the flowering phase, so utilize a dehumidifier if necessary.

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Signs of a Problem While Flowering Marijuana

Remember those yellow leaves we mentioned earlier? A few are okay, merely besides many in your indoor setup might bespeak a serious problem.

Excessive leaf yellowing could exist a sign of a nutrient trouble or light fire – and both are easy to practise during the cannabis flowering phase.

Another sign of light burn is foxtailing. This is when a new bud (chosen a spire) emerges out of the side of an old bud. If you see this, it’southward non normal, and it’s not good.

It ways the estrus or low-cal in your grow room is wrong. Improper conditions like this can discolor your buds and possibly evaporate your THC.

Pruning Your Plants During Flowering

Prune your plants during the second month of the flowering stage . You should accept finished whatever low-stress training, and your plants would accept stabilized their growth patterns.

Some growers still try super cropping at this bespeak, but it is non recommended because many plants volition not take enough time to recover from the stress.

The all-time growers know how to prune their plants.

Information technology’s not necessary, but some growers prefer to do it to optimize their cannabis constitute’s vegetative growth.

This is because it saves the plant energy and helps ensure that the majority of light and nutrients goes to the most promising buds.

Pruning can exist challenging if you don’t know what you’re doing. Check out our full guide on how to clip marijuana plants!

How do you lot prune?

  • Remove leaves that will not thrive
  • It’southward okay to prune whatsoever of the buds that are in the shadows
  • Practice non prune leaves that are in the shadows merely are nonetheless thriving

You shouldn’t prune too many leaves considering your found isn’t going to abound many of those leaves dorsum. Plus, you lot demand them to absorb light and proceed flowers developing.

Pruning Your Plants

Cannabis Defoliation

Cannabis confusion is the removal of excess leaves from your plants.

As leaves plow xanthous, you can remove them. They’re yellow because they are not thriving and free energy is being devoted to the flowering parts of the constitute.

Merely make sure you don’t remove whatsoever green leaves— those are still producing valuable free energy!

Some growers practice confusion by removing some of the leaves off a institute to expose buds to more sun. However, this is a risky thing to do.

The leaves are what help the plant mature, and even if a leaf is blocking your flowers from directly light, chances are, they’re still doing their job.

A healthy foliage protects the health of an entire plant, so unless the leaf is dying or dead, leave information technology solitary and let information technology exercise its job.

Scout those pH levels While Flowering Weed

Flowering plants are sensitive, and one event that can be easily overlooked is pH. Many marijuana plants suffer from wrong pH levels, specifically in the root area, and it can be fatal.

Monitoring the pH level is essential regardless of your growing medium or setup. Signs of a pH problem include wrinkled or curled leaves or what may be mistaken every bit a nutrient deficiency.

Watch those pH levels
Scout those pH levels – Image powered by

Whenever there is a problem, ever beginning past checking the pH levels near the roots to run into if that is what’south causing the issue.

In soil, the pH level should be between 6.0 and 7.0. In hydroponic systems, it should exist betwixt v.5 and half-dozen.5.

PH testing is useful at every stage of growing, and should not be overlooked during the flowering stage. The adept news is that testing pH levels is quite easy and cheap.

Regardless of where your plants are in their growing progress, y’all should purchase yourself a pH testing kit.

Preventing Food Burn

PH isn’t the but affair to be concerned virtually.

Nutrient burn tin can also impact your plants during the flowering stage equally your plants are very sensitive to whatever errors at this signal.

Regardless of the type nutrients you use, whether information technology be organic compost or store-bought chemicals, you have to exist conscientious non to overdo information technology.

Too many nutrients can fire your plants and cause an unpleasant gustation. Plus, during the last few weeks of flowering, there isn’t enough time to repair the harm.

Preventing Nutrient Burn
Preventing Nutrient Burn

Nutrient burn will crusade the tips of your plants to look burnt. Some signs of it, especially in the commencement parts of the flowering stage is okay, but if the burn begins to show in the “fingers” of the leaves, you lot’ve gone too far.

What should y’all practise?

The best fashion to reduce this risk is to limit food use to only when in that location is a clear nutrient deficiency.

So, introduce nutrients gradually. You’ll also want to cheque the pH starting time, to brand certain that the issue isn’t actually related to pH instead of nutrients.

The Last 2 Weeks of Flowering: What to Wait

Wondering if y’all are done still?

The flowering process generally takes well-nigh 1 to two months, simply y’all may find that some strains get an additional two weeks.

Because in that location is no set number of weeks for flowering, yous must be prepared to recognize the signs.

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Maturity is the most sought-after phase in the cannabis life cycle. When you’ve reached this point, you lot’re merely days away from existence able to harvest.

So, are you done?

You will know that the plant is ready to be harvested because the calyces and pistils will swell up and beginning to turn red.

The resin continues to accumulate, getting stickier and heavier with every passing day. The flowers describe together and close up any remaining space.

The Final Weeks of Flowering

The final weeks volition bring virtually a considerable increase in THC production on or around the buds.

This is really a corking matter for your plants (and you, of course) because THC is a mild, natural pest deterrent to go along any bugs away from the flowering plant.

This is one reason why THC has such a powerful olfactory property.

Here’south a tip: If you aren’t already using carbon filters, at present is the time to practice and so. You lot won’t be able to mask that smell.

Preparing Your Plants for Harvest

A vital thing to remember — for your own health, also every bit the quality of your buds — is to affluent out your growing medium between 1-ii weeks before yous harvest.

Plants demand this process to irrigate and rinse minerals and nutrients out then that information technology is safe and enjoyable for use.

You lot desire to completely remove the nutrients you have been feeding your plants — whether chemical or organic — so that none of it remains in the consumable product at the stop.

Preparing Your Plants for Harvest
Preparing Your Plants for Harvest – Paradigm powered by

Generally, this should happen well-nigh two weeks before the flowering phase ends (in the second calendar month of flowering), but it could vary by the medium used.

Rock wool, soil, and coconut fiber require two weeks, but if you lot’re using clay pellets, fifty-fifty a week of water rinsing will clean out the substrate.

Here’s how to flush your plants:

  • Apply neutralized water (water with a balanced pH level)
  • Exam the h2o before giving it to your plants
  • Water your plants with this water

This water tin can also help in the instance of a pH imbalance in the soil, or if you lot have a food toxicity result.

When you lot harvest will have a huge effect on the end product.

While the bodily timeframe depends upon the strain, desired results, and your own personal preferences, most strains are ready to be harvested after a ii to four-month growing bicycle.

Know When to Harvest

Know When to Harvest
Know When to Harvest

For a more energetic high, harvest on the earlier side. For a relaxed high with that classic couchlock feeling, harvest a bit later on.

Merely don’t harvest too tardily or besides early on, or you may end up with besides subtle of an effect or a type of loftier that is undesirable.

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A quick guide to harvesting

By and large speaking, when at least half of the pistils on the institute are ruby, you are ready to harvest.

Hither are some more signs:

  • Resin that is thick, and easily visible to the naked eye
  • A plant that is very heavy with buds, with some of the leaves turning yellow.
  • Trichomes that are mostly white and milky, every bit can be seen with a microscope or magnifying drinking glass.

Patience is fundamental to timing the harvest right.

Sometimes harvesting needs to happen a little earlier than planned, especially if your found is unhealthy.

If your buds look burnt or discolored, or you’re leaves are showing signs of disease, and it is getting worse, information technology may be better to harvest a trivial early.

If y’all exercise demand to harvest your plants early and information technology impacts the quality, sometimes curing can set up it.

Go hither to learn more nigh curing marijuana

As yous can see, the flowering stage is an heady flow in the marijuana life cycle that leads to everyone’s favorite time – harvest.

By paying careful attention to your plants and getting enough of do, you can learn to abound the most strong, highest yielding marijuana around.

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Happy growing!

Oftentimes Asked Questions Nigh Cannabis Flowering Stages

How long is the flowering phase indoors?

Why do indoor plants need full darkness to prevent flowering?

Marijuana is sensitive to certain light spectrums. Indoor lighting includes spectrums that could stimulate flowering, while spectrums produced by the moon do not. For more than on light spectrums read this commodity.

How do you know when to outset flowering?

How long your plants remain in the vegetative stage is upwardly to you. However, you should keep in mind that they volition abound even larger during the flowering stage, and then make sure you have infinite.  For more on the vegetative stage, read this article.

How long can you use nutrients?

Nutrients can be used throughout the grow wheel, which ends about two weeks before they are ready to harvest. Almost two weeks prior to harvest, you should terminate adding nutrients and peradventure flush your plants. Learn more than virtually nutrients in this article.


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