A Week by Week Marijuana Grow Schedule (2022)

This schedule is suitable for people growing in pre-fertilized soil. The schedule starts on the day you place your cuttings or seedlings in your grow room. Seedlings therefore already need to have a number of internodes and cuttings must be well rooted. Read the entire schedule, so you know what to expect.

In this guide you will learn

  • Week 1 vegetative stage
  • Week 2 vegetative stage
  • Week 1 flowering
  • Week 2 flowering
  • Week 3 flowering
  • Week 4 flowering
  • Week 5 flowering
  • Week 6 flowering
  • Week 7 flowering
  • Week 8 flowering
  • Week 9 flowering


  • 3′ x 3′ grow tent
  • 4 x Amnesia haze – 9 week flowering
  • 400 watt MH during veg stage
  • 600 watt HPS during flowering stage
  • Humbolt soil
  • Marijuana booster nutrients

Week 1 vegetative stage

A Week by Week Marijuana Grow Schedule (1)
  • Amount of light: 50% of the lights on
  • Light distance: 40 inches between lamp and plant for 400 watt
  • Light duration: 18 hours/6 hours of darkness
  • Temperature day/night: 73/64
  • Humidity: 70%
  • pH: 6.0
  • EC: 0

During the first week the seedlings have to get used to the light. You should use an Metal Halide lamp during the grow phase if you have one. MH lamps provide much more white/blue light than HPS, promoting their growth. Fluorescent cool whites are also suitable but a lot less powerfull. I always use a 400 watt MH lamp during the vegetative stage.

For the first watering, give that much water that it starts to come out the bottom of the pot and wait with the next watering until the plants used all the water. You don’t need to provide them with nutrients yet, because this is present in the soil. This soil from FoxFarm or Humbolt is perfect for growing marijuana. Spray your plants every day with a plant spray to keep the humidity high.

Week 2 vegetative stage

A Week by Week Marijuana Grow Schedule (2)
  • Amount of light: 100% of the lights on
  • Light distance: 20 inches between lamp and plant for 400 watt
  • Light duration: 18 hours
  • Temperature day/night: 75/64
  • Humidity: 65%
  • pH: 6.0
  • EC: 1.0

Turn on all light if you have more and decrease the distance between the lamp and the plant to 20 inches, but make sure it doesn’t get too warm. Water your plants from underneath once, so the roots will start searching for water and they’ll quickly grow towards the bottom of the pot. You can provide a bit of nutrients, preferably with a high nitrogen content, such asgrow boosteror Grow fertilizer fromFlower Power.

And this is the right time to top your plants if you want to. They have enough time to keep growing. Read more abouttopping marijuana plants. Put a fan on the lowest setting and aim it just above the plants, so they all ‘dance’ a bit. This gives them a firm stem. You can switch to flowering once the tips of the leaves of the plants start touching each other, so you know you’ll get a nice, green blanket of leaves.

(Video) Properly Feeding Young Plants - Cannabis Grow Guide Week 2

Week 1 flowering

A Week by Week Marijuana Grow Schedule (3)
  • Amount of light: 100%
  • Light distance: 20 inches
  • Light duration: 12 hours
  • Temperature day/night: 77/64
  • Humidity: 65%
  • pH: 6.0
  • EC: 1.0

By shortening the duration of light from 18 to 12 hours the plant thinks fall is coming, and it will start to flower. It takes several weeks before the first flowers become visible and the plant will keep growing nicely until then. The need for nitrogen therefore remains high. Make sure the rotating fan is aimed between the lamp and the plant. This transports the hot air underneath the lamp and you don’t damage the plants too much with the hard wind.

Check the bottom of the leaves for any damage or discoloration because of bugs or nutrient deficits and make sure the tips of the leaves aren’t ‘burning’ = becoming yellow. This could indicate a surplus of nutrients. More about nutrients in the Plant Care sectionon this link.

Week 2 flowering

A Week by Week Marijuana Grow Schedule (4)
  • Amount of light 100%
  • Light distance 20 inches
  • Light duration 12 hours
  • Temperature day/night 77/64
  • Humidity 60%
  • pH 6.0
  • EC 1.3

You shouldn’t top the plants anymore, but pruning some useless side shoots is perfectly fine. The removal of these side shoots at the bottom, makes the plant use its energy solely for the production of thick buds. Read more about pruning in the articleHow to prune marijuana plants. They’re growing very quickly now, so you have to check the distance between your plant and lamp every other day and adjust it if necessary. If the top leaves are starting to curl or show discoloration, it’s too warm and the extractor needs to be turned up or the distance between the lamp and plant needs to be increased.

Increase the EC with 0.1 every week and see how the plants react to this. If you make sure all abovementioned values are correct, you should have healthy, green plants by now with thick stems and large leaves that can carry the weight of many heavy buds.

Let myfree marijuana grow biblebe your ultimate guide as you begin your marijuana journey.

Grow Bible

A Week by Week Marijuana Grow Schedule (5)
(Video) Marijuana Nutrient Guide Schedule Explained - Growing Cannabis 201: Advanced Grow Tips
  • Grow with my Quick Start Guide
  • Discover secrets to Big Yields
  • Avoid common grow mistakes
    (Video) First Cannabis Grow - Weeks 4-10 - Vegetation, Topping
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    Week 3 flowering

    A Week by Week Marijuana Grow Schedule (6)
    • Amount of light 100%
    • Light distance 20 inches
    • Light duration 12 hours
    • Temperature day/night 77/64
    • Humidity 60%
    • pH 6.0
    • EC 1.4

    The root system of the plant has grown out and should come out of the bottom of the pot by now. The first flowers will become visible and the plants will grow slowly for a while. They now use the maximum amount of water, so make sure they always have access to water by always having a moist soil. Feel halfway down the pot with your hand and lift them often to check the humidity.

    If you’re growing with regular seeds you should have removed the males by now, before they can fertilize your females and endanger the quality of your marijuana. End this week with a good rinsing. Don’t add any nutrients to the water when rinsing, but make sure the pH is 6.

    Week 4 flowering

    A Week by Week Marijuana Grow Schedule (7)
    • Amount of light 100%
    • Light distance 20 inches
    • Light duration 12 hours
    • Temperature day/night 77/64
    • Humidity 50%
    • pH 6.0
    • EC 1.5

    You’ll see that little buds are starting to form all over and that the plants are getting a nice smell. The need for phosphor (P) increases, so move on to a good flowering nutrients, such as Bloom by flower power. You should’ve given your plants a good rinse at the end of last week, without any nutrients. This is to lower the nutritional value with a high nitrogen concentration in the soil and plant, so the plant can immediately absorb a good dose of phosphor to quickly let the little buds develop.

    Week 5 flowering

    A Week by Week Marijuana Grow Schedule (8)
    • Amount of light 100%
    • Light distance 20 inches
    • Light duration 12 hours
    • Temperature day/night 77/64
    • Humidity 50%
    • pH 6.0
    • EC 1.6

    The plant won’t grow anymore and will only focus on the production of buds. Make sure the distance between the plant and lamp is optimal; as much light as possible, but not too warm. The buds are even more sensitive to heat than the leaves. Attach a thermometer to a plant stick and place it under a lamp to see how warm it gets. Keep feeding your plants and look out for possible damage to the leaves by bugs or nutritional problems. Red stems are a sign of stress and can indicate certain problems. Check theSymptom Checkerif you have any problems

    Week 6 flowering

    A Week by Week Marijuana Grow Schedule (9)
    • Amount of light 100%
    • Light distance 20 inches
    • Light duration 12 hours
    • Temperature day/night 77/64
    • Humidity 50%
    • pH 6.0
    • EC 1.7

    The buds continue to develop and the plant will use maximum amounts of water, nutrients and CO2. Make sure your fans keep spreading the fresh air and that your plants never get too dry. This is always a long phase and not much seems to be happening. It is a challenge to keep the environment factors such as temperature, humidity and ventilation optimal right now. Rinse your plants again at the end of the week with water without nutrients, but with a pH of 6. This is to stabilize the EC and pH values of the plant and the soil again.

    Week 7 flowering

    A Week by Week Marijuana Grow Schedule (10)
    • Amount of light 100%
    • Light distance 20 inches
    • Light duration 12 hours
    • Temperature day/night 77/64
    • Humidity 40%
    • pH 6.0
    • EC 1.8

    Your buds are starting to become really big and the plant still needs nitrogen, phosphor and all other nutrients, but needs potassium more than anything. Use a product such asTHC boosterorFlower Power Boostto provide the plant with an optimal diet. You’ll see that a sort of white layer will arise on little leaves around the buds; this is THC. The whiter, the better, so give your plants maximum nutrients. You’ll see that the first hairs will start to turn orange.

    (Video) Balcony Cannabis Grow - How Much Can We Grow Without LED Lights?

    Week 8 flowering

    A Week by Week Marijuana Grow Schedule (11)
    • Amount of light 100%
    • Light distance 20 inches
    • Light duration 12 hours
    • Temperature day/night 77/64
    • Humidity 40%
    • pH 6.0
    • EC 1.8

    Your buds are making their final growth spurt, but will mainly focus on the compactness and production of THC. The bottom leaves might start to turn yellow and slowly die off, but that’s normal. It’s no nutrient deficit, so you can keep maximally feeding them. Check the buds every other day for possible fungi and yellow/brown leaves. Immediately cut off suspicious parts or post a picture onthe forumand you’ll have an answer to your question in no-time.

    Week 9 flowering

    A Week by Week Marijuana Grow Schedule (12)
    • Amount of light 100%
    • Light distance 20 inches
    • Light duration 12 hours
    • Temperature day/night 77/64
    • Humidity 40%
    • pH 6.0
    • EC 0.5

    In order to get rid of all nutrients, you can drastically lower the EC. Provide your plants the last one or two times with only water of pH 6.0. This also rinses the soil, so you could use it for your next harvest. Keep all factors under control and properly check forrot or bugs. Discoloration of the leaves is normal and all hairs on the buds are slowly turning brown. If you feel like your plants can still use normal amounts of water and you’re not at 80% brown hairs yet, you could let them sit a bit longer. It’s also a matter of taste. Read more about harvesting in the articleWhen to harvest marijuana plants


    What should my buds look like at 5 weeks? ›

    In week 5 of flowering, you can observe the buds all over your plant becoming thicker. You may also spot new buds growing in new places such as along the main cola. With buds abounding, your cannabis plants will get fatter every day. This is a surefire sign you are in full flowering mode.

    What happens at 7 weeks of flowering? ›

    Changes from Week 6 to Week 7

    The biggest changes that you will witness in the seventh week of flowering is the amount of trichome production on the buds. Your buds in Week 7 will be noticeably frostier, as the plants begin to finish out. These plants are beginning to look smokable!

    What should buds look like at week 6? ›

    Three things happen as week six of the cannabis flowering stages rolls around: Buds will continue to grow and progress further toward ripening. Pistil hairs will start to switch from white to a light brown or amber color. Trichomes will start to become opaque on their way to milky white.

    What happens at 4 weeks of flowering? ›

    Week 4: Growth Stops and Plants Focus on Their Buds

    At this week in the flowering stage, the cannabis plant will most likely have stopped growing. The plants are now focusing all of their energy into growing buds and are hoping to be pollinated by a male to create seeds that will germinate in the spring.

    What week Do buds swell the most? ›

    Weeks 1-3 – Transition

    Also known as the flowering stretch—you'll notice a sudden increase in growth over these three weeks. Your plant needs to be big and strong enough to support the buds that'll be growing over the next few weeks—it can double or even triple in size.

    Should I remove fan leaves during flowering? ›

    You can remove fan leaves during flowering in much the same way you do during veg. Prune away large leaves that are overshadowing bud sites, as well as dead or dying fan leaves. One thing to keep in mind is that you should prune in intervals, giving at least a couple weeks between each session.

    Do buds get bigger week 7? ›

    Flowering week 7 and 8. Ripening is the most difficult phase. The buds need to ripen at this point in order to be harvested at the best possible moment. The buds are still getting bigger, but not as quickly as in the previous phase.

    Do buds grow in week 8? ›

    Weeks 6-8 – Buds ripen

    The buds will start to ripen, and pistils will darken; how exciting. At this point, you will no longer spot any vegetative growth. Your mature lady will devote all her energy to growing potent buds in her final stages of life.

    What week Do pistils turn brown? ›

    Somewhere around week 4-6, midway through flowering, is when the first orange, red and/or pink colours begin to emerge and proliferate. Not until sometime during weeks 7–10 will a majority of the pistils show beautiful ripe shades of red, orange, and brown.

    When to stop feeding nutrients during flowering? ›


    At the end of flowering, there may still be plenty of nutrients left in the growing medium and leaves. To prevent harsh tastes and unsavoury chemicals making their way into your stash, you can simply stop feeding any nutrients in the last 1.5–2 weeks of flowering.

    Do buds grow after week 5? ›

    Changes from Week 4 to Week 5

    The biggest changes that you will witness in the fifth week of your flowering cycle is not so much in total plant growth (as in Week 4) but in the maturity of the buds. It is in Week 5 that the buds really begin to fill out. Even more growth will occur in Week 6 and beyond.

    Should I use nutrients every time I water? ›

    You don't want to use liquid nutrients every time you water—use them every other watering, or two waterings on, one off. It depends on the complexity of your soil and the health of your plants. Too many nutrients will damage your plants. Giving weed plants the proper amount of nutrients requires careful monitoring.

    What does week 3 of flowering look like? ›

    More growth and stretching of the plants in Week 3

    You will notice continued growth and stretching. You can see in the video how bushy everything has become. This rapid, almost non-stop growth is all a sign of the post-vegetative stretch that these plants go through after switching to the 12/12 light cycle.

    What should buds look like week 3? ›

    Week 3-4: Budlets Form

    At this point you'll actually start to see real buds instead of just hairs (I like to call them “budlets” during this stage) and all the pistils will be white and sticking almost straight out.

    What should buds look like at week 3? ›

    Flowering week 3 and 4. After two weeks with 12 hours of light and 12 hours of darkness, the plant stops growing and every bud starts to develop its first flowers. Almost no leaves are being made anymore and the roots also don't grow as quickly. All pistils are white and increase very rapidly.

    Do bigger pots mean bigger buds? ›

    Bigger pots does not mean bigger plants. The recommended pot size for transplanting is between 2 to 4 inches larger in diameter from the pot that the plant was planted in.

    Why are my buds light and fluffy? ›

    Overwatering can also cause buds to become loose and fluffy. When the soil or grow medium has too much water, oxygen cannot reach the roots. This will be detrimental to the entire plant overall. This can also often wash out key nutrients the buds need to grow big and dense.

    Will buds grow without fan leaves? ›

    Remember that fan leaves removed during flowering won't grow back, and removing too many can throw off the plant's energy balance, stunting bud development in turn.

    How do I make my buds sweeter? ›

    Many sugar or carbohydrate-based supplements claim to improve the smell/taste/sweetness of buds. A cheap alternative to expensive sugar-based bloom boosting supplements is blackstrap molasses. Giving this to your plants for the last few weeks before harvest can help them get bigger and smell/taste better.

    Do buds grow at night or day? ›

    Cannabis plants need short days (or more specifically long nights) in order to start flowering and make buds. Most indoor growers give their plants 12 hours of darkness and 12 hours of light each day to initiate budding and continue with that 12/12 light schedule until it's time to harvest.

    Should I leave my plants in the dark before harvest? ›

    Darkness helps marijuana plants replenish THC and terpenes. During the day, THC partly degrades and terpenes partly evaporate. So the best time for harvest is early morning. And if you extend the night before the harvest to at least 2 days, you can (arguably) get more flavorful and potent buds.

    What week of flowering Do buds smell? ›

    Late flowering / Ripening stage – week 6 to harvest

    In the last few weeks, buds gain the most weight. They are sticky to the touch and can be very smelly.

    How often do you water flowering stage? ›

    Generally, you want to water every 2 or 3 days during Flower and you want to water enough that 10-20% of water comes out from the pot as runoff. You can check your soil moisture by sticking a finger in the pot: if the soil is dry a couple inches down, then it is time to water again.

    Why are my buds not fattening up? ›

    Once a cannabis plant has stopped “living” you won't really be able to get more growth out of it. If you've burned off or otherwise lost all your leaves and sugar leaves, take the plant down. Your buds won't fatten up without any green on the plant, but buds may start to get discolored or otherwise damaged.

    How tall should plants be before switching to flower? ›

    You should measure from the base of your plant to around 12 inches below your lights. When your vegging plants reach about one third of this height, you can flip into flower.

    Can I harvest with white pistils? ›

    Harvesting based on pistils

    If most pistils are white, the marijuana isn't ripe enough for harvest and the bud is still lacking a lot of weight and THC. If all pistils are brown/red, you're actually too late, and the quality of your marijuana will rapidly drop.

    What happens if you wait too long to harvest? ›

    Waiting longer to harvest gives the trichomes ample time to develop. But the longer you wait, the more highly intoxicating and sedative your flower will become. This is especially true for indica strains, but even sativa strains can become sedating.

    Should all pistils be orange before harvest? ›

    Guideline #2: Harvest marijuana when 70% of the pistils have turned brown or orange. Most cultivators who base their harvest date on the Pistil Method take down their plants when 70% of the pistils have changed color and curled inward. If 90% of the pistils are brown/orange, the plant is past its peak.

    Can you start showing at 5 weeks? ›

    Can I start showing at 5 weeks pregnant? If you're a first-time mama, you probably won't be showing at five weeks. Signs of a belly bump usually “pop” around week 12. If you've been pregnant before or are carrying multiples, you may look noticeably pregnant earlier.

    What does an embryo look like at 5 weeks? ›

    Baby development at 5 weeks

    Deep in your uterus an embryo is growing at a furious pace, and it looks more like a tadpole than a human. The embryo is made up of three layers – the ectoderm, the mesoderm, and the endoderm – which will later form all of the organs and tissues.

    What does my 5 week baby look like? ›

    At five weeks the embryo is still very small but growing quickly! Picture a small orange seed or a grain of rice. At this stage, your little one could be between 0.05 and 0.10 inches long, with a shape similar to that of a tiny tadpole.

    Are you dry or wet in early pregnancy? ›

    Early on in a pregnancy, you may feel more wetness in your underwear than usual. You may also notice a larger amount of dry whitish-yellow discharge on your underwear at the end of the day or overnight.

    How does your lower stomach feel in early pregnancy? ›

    Lower abdominal pain is normal during pregnancy and is most common between 18 and 24 weeks. Your growing uterus is pulling and straining the muscles that support it. You may feel sharp pains or just a mild pulling sensation. It often occurs when you cough, sneeze, stand up, sit down, roll over, or during sex.

    What can cause a miscarriage? ›

    Various factors increase the risk of miscarriage, including:
    • Age. Women older than age 35 have a higher risk of miscarriage than do younger women. ...
    • Previous miscarriages. ...
    • Chronic conditions. ...
    • Uterine or cervical problems. ...
    • Smoking, alcohol and illicit drugs. ...
    • Weight. ...
    • Invasive prenatal tests.
    16 Oct 2021

    What are signs of twins? ›

    Some common signs of a twin pregnancy include:
    • More morning sickness. ...
    • Tummy troubles. ...
    • Intense fatigue. ...
    • More weight gain earlier. ...
    • Increased appetite. ...
    • More fetal movement sometimes in different areas of your tummy at once.
    16 Dec 2021

    Why am I showing so early? ›

    If your uterus tilts toward your back, it could take longer to show during those early months of pregnancy. And if your uterus tilts towards the front, you may show much earlier. Diastasis recti is another possible explanation for showing early. This is when the mid-abdominal muscles separate and create a bulge.

    When did your bump pop? ›

    Your Pregnant Belly: Second Trimester (Weeks 14 to 27)

    But by midway through, that'll start to change—and by the trimester's end, you'll likely have a sweet, rounded belly. Around the 20-week mark your uterus will have grown up to your belly button, which for many women causes their belly to noticeably protrude or pop.

    Can you feel your uterus growing? ›

    Symptoms of your uterus stretching may include twinges, aches, or mild discomfort in your uterine or lower abdominal region. This is a normal part of pregnancy and a sign that everything is progressing normally. Watch for spotting or painful cramping. Report these symptoms to your doctor.

    Why is my belly so big at 6 weeks pregnant? ›

    Don t be surprised if you develop a bit of a 6 weeks pregnant belly. Although your 6 week embryo is still well down in your pelvis, some women, especially those who've been pregnant before, seem to show much earlier. General abdominal distention is usually the cause.

    How big is a 6 week embryo? ›

    Overall, your baby looks a bit like a tadpole and is about 5 mm from head to tail. On an ultrasound (which isn't usually done at this stage), your baby looks like a tiny bright dot, with their heart beating quickly and rhythmically.

    How do I calculate my EDD? ›

    An estimated due date can be calculated by following steps 1 through 3: First, determine the first day of your last menstrual period. Next, count back 3 calendar months from that date. Lastly, add 1 year and 7 days to that date.

    How can I avoid miscarriage? ›

    1. not smoking during pregnancy.
    2. not drinking alcohol or using illegal drugs during pregnancy.
    3. eating a healthy, balanced diet with at least 5 portions of fruit and vegetables a day.
    4. making attempts to avoid certain infections during pregnancy, such as rubella.

    What is a chemical pregnancy? ›

    A chemical pregnancy is a pregnancy loss that happens before the fifth week. Testing positive on a pregnancy test only to get a negative result a few weeks later can signal a chemical pregnancy. Most people who experience them go on to have healthy pregnancies. Appointments 216.444.6601. Request an Appointment.


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