Weed Seed Stages

Knowing the marijuana growth stages and their duration is crucial because you can tell when to prune, train, trellis, and harvest the plant. Marijuana plant cultivation needs many conditions in care and environment that change according to each step of the weed growth process. The seedling stage of cannabis plants follows on from germination. Read more about the nutrition they need and the kind of light they prefer.

Marijuana Growth Stages: How Much Time is Needed to Grow Marijuana?

Cannabis plants undergo some stages when they grow and mature. Each step requires a different level of water, nutrients, and light. Knowing the marijuana growth stages and their duration is crucial because you can tell when to prune, train, trellis, and harvest the plant.

If you intend to grow marijuana , the article will help you know the growth stages. Each of them needs a specific environment and unique demands in every growth stage. The growth takes from three to five months.

Four Major Marijuana Growth Stages

A marijuana plant growth undergoes the four main stages below:

  1. Germination.
  2. Seedling.
  3. Vegetative.
  4. Flowering.

Germination Stage

The germination length is three to ten days, and the marijuana light cycle is sixteen hours per day.

The stage commences with a seed that is hard and dry. It must also be from light to dark brown color. When the seed germinates or sprouts, it can get placed in soil. The taproot will drive down while the seedling stem grows upwards.

Two rounded cotyledon leaves will get produced from the stem when the plant leaves the protective seed casing. The leaves take the sunlight required for the plant to be stable and healthy.

As the roots grow, the stalk will rise, and the initial iconic fan leaves grow.

Seedling Stage

According to the article “ How long does it take to grow weed ”, written by cannabis experts at AskGrowers.com, the second stage length is between two to three weeks. The marijuana light cycle is sixteen hours per day.

When the marijuana plant becomes a seedling, it will develop more traditional cannabis fan leaves. As a sprout, the seed will first produce leaves with a single ridged blade. Upon new growth, the leaves will grow more edges. A mature plant has from five to seven leaf blades, but some plants can have more.

The plants remain seedlings until they start having leaves with the complete number of blades on new fan leaves. Healthy seedlings have a vibrant green color. Farmers need to be cautious when watering the plant during its seedling stage. However, the roots are still small. So, they won’t need too much water.

During the seedlings stage, the plant is likely to get mold diseases. So, ensure the environment is clean, and there should not be too much moisture. You must also provide a lot of light.

Vegetative Stage

The stage duration is three to sixteen weeks: The light cycle is:

  • Sixteen hours per day if indoors.
  • Six hours per day if outdoor plus many hours of indirect sunlight.

The vegetative marijuana stage is where the plant growth starts. When you get here, you will have moved the plant to a bigger pot, and the roots and foliage will be growing fast. It is also the time for you to start topping or training the plants.

Ensure to increase watering as the plant grows. While young, the plants need water near the stalk. However, as they grow, the roots also develop outwards. So, you have to water far away from the branch in the soil to allow the roots to stretch out and absorb water better.

The vegetative stage requires healthy soil with nutrients. So, ensure to provide high amounts of nitrogen. The organs will appear a few weeks into the vegetative period.

Scientists, according to royalqueenseeds.com , recommend separating the male plants to avoid pollinating the female plants.

Flowering Stage

Flowering is the last part of all stages of growing weed . The stage length is from eight to thirteen weeks, and the light cycle is twelve hours per day.

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Flowering is the last marijuana growth stage. After that, the plants begin to have buds and. Most strains flower in weeks eight to nine, but some, mainly Sativa, may take longer.

Outdoor flowering happens naturally when a plant gets less light per day. Indoor farmers can initiate the cycle by lowering the light amount from sixteen to twelve hours per day.

The flowering stage has the following phases:

  • Flower initiation: Between one to three weeks when the plant keeps growing and females produce pre-flowers or white hairs. They are the start of buds.
  • Mid-flowering: From week four to five, bugs begin to fatten up when the plant stops growing.
  • Late flowering: It starts from week six when trichome density increases and plants become sticky. Ensure to monitor the color of the pistils to know when to harvest.


You now have the answer to the question, how long does it take to grow weed ? The marijuana growth stages , according to scientists at Growdiaries.com , will enable you to remain cautious at every step.

You will know what you need. Then, after getting experience, you can experiment with several high-yield and high-quality strains.

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Kevin Benoit

Kevin Benoit is the editor of Parlé Magazine. He founded the magazine while in college and continues to run it today. Follow him on IG: @parlewithme Read more articles by Kevin.

4 Stages Of Marijuana Plant Growth

Marijuana plant cultivation needs many conditions in care and environment that change according to each step of the weed growth process.

The taste and quality of your cannabis bud harvest depend on your understanding of the growing marijuana phases and your plants’ lifespan. Take careful notes on when and how you complete each stage of your weed bush cultivation, remarking:

  • Environment, temperature, air humidity;
  • Amount of water and watering intervals;
  • Amounts of nutrients;
  • Pruning and topping timing.

Well, let’s check out the main phases of growth of cannabis bushes, where you should pay attention while they last and how to improve and accelerate the process of growing marijuana strains. You will find a lot of useful information about marijuana and its cultivation on the Ask Growers.

How Long Does Weed Take To Grow?

First-time growers usually wonder how long for weed to grow? Cultivating a cannabis plant from planting seeds to harvesting buds might take several months, depending on where you cultivate it. Your plant can blossom in only a few weeks if you have an indoor grow space. Weed-cultivator may compel a cannabis plant to blossom, growing it indoors.

Remember that the outside environment would have an impact on your growing area. You may need to install heaters in the cold seasons or ventilation and air conditioners in the heat.

Marijuana plants are annuals, which means they exist for one life cycle and then die. You will be able to collect weed buds for ingestion during the blossoming phase. Cannabis bushes will wither and decay if nobody harvests them within a few weeks of maximum flowering.

What Are A Weed Plant’s Growth Stages?

You must pay attention to several elements of the cannabis plant condition at all stages of a marijuana plant. There are four main weed plant stages of growth:

  • Germinating;
  • Seedling;
  • Vegetative;
  • Flowering/harvesting.

Cannabis Seed Germination (3-10 days)

Marijuana seeds germinate in three to ten days. A weed seed should be light- to dark-brown in tone and feel firm and dried. Undeveloped seeds are mushy and green, white in appearance. They are unlikely to sprout. To ensure that seeds germinate properly, the gardener must ripe them enough. Keep your seeds in a moist and dark place. Some growers would put them in a cup of water covered in a wet paper towel on a shelf.

When you expose the seeds to light and moisture place, it increases hormones and accelerates growth. As the roots mature, the stalk rises, and the first distinctive fan leaves appear, at which time your weed plant is called a seedling.

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Seedling Stage In Cannabis Plants (2-3 weeks)

The marijuana bushes require sufficient illumination at the seeding stage. Make sure it gets lots of light for at least 16 hours every day. A strong sprout should be juicy green in color. As a seedling, the germ will grow only one ridged blade of leaves. However, new blades emerge gradually. Giving a specified amount of water throughout the seedling stage is essential. Because the baby weed plant has such a little root system, it is critical not to overwater it.

Growing conditions must be maintained clean throughout this time. Knowing the cannabis breed of the seeds is crucial so you can act appropriately.

Vegetative Stage In Cannabis Plants (3-8 weeks)

The most significant variation in weed growth time occurs during the vegetative stage, after seedling and blooming. A seedling initiates vegetative development when it has seven sets of pointed leaves.

Cannabis’ vegetative stage typically lasts from 3 to 16 weeks. Sativa plants are tall and have fewer leaves than Indica ones, which are smaller and denser. You should move your plant into the big container at this time because the roots and leaves are growing quickly. Growers usually start topping and training bushes at this point.

If you need to know the sex of your seedlings (to get rid of the males), they will begin to exhibit sex organs a few days into the veg stage. Separate male plants so that they do not pollinate the females. It will benefit the plants if you dry out the ground at this phase.

Cannabis Flowering Stage (8-11 weeks)

The cannabis blooming stage is the ultimate stage of weed plant growth, and it is when the plant enthusiast may pick his first yield. As summer transitions into fall, the blooming occurs naturally outside as the plant gets less light every day. Indoor gardeners can induce flowering by decreasing the concentration of sunlight from 18 to 12 hours each day. The blooming stage begins at eight weeks and can last up to 11 weeks, with three distinct phases:

  1. Flower growth. At this stage, the plants’ buds begin to form.
  1. Mid flowering stage. This phase lasts from the fourth to the fifth week. Because the buds get larger, the plants cease growing.
  1. Late flowering stage. The plants grow thick, and the blossoms emit a strong odor. It is critical to regulate the temperature and check the progress in preparation for harvesting.

It is better to harvest when half of the trichomes are translucent. This approach yields the most THC while producing the least CBD.

When Do Buds Grow The Most?

The weed buds appear fully after 8-10 weeks of cannabis bush cultivation. It’s also when the scent of marijuana flowers might get overwhelming!


How long does it take to grow marijuana depends on your conditions and environment. Keep a weed cultivation diary to keep track of your plants’ growth. Examining your notes can help you make the right decisions and increase the effectiveness and amount of your buds’ yield in the following seasons.

Seedling Stage

The seedling stage of cannabis follows on from germination. You will be able to tell when it has begun when your shoots start to develop a second set of leaves. These will look different to the embryonic cotyledons. They will be bigger, with a long serrated edge – a look that is much more associated with cannabis plants. However, these new leaves will only have one “finger”, instead of the 5 or 7 normally seen in adult leaves.

After this your cannabis plants will start to grow a third set of leaves, these will tend to have three fingers. This will be followed by more and more leaves, with each one beginning to resemble the expected cannabis leaf shape more and more. As mentioned, the most common and expected is a 5 or 7 finger leaf, but do not be surprised if you end up with 9 or even 11 fingers!

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The seedling stage is usually over when you start getting leaves with their maximum amount of fingers. Other indications will include a stem with a thickness of around 4-6mm and a height of around 3-4 nodes. During this stage the seedling will also try and develop a strong root base, this will allow for strong future development and nutrient intake. Depending on where you grow, the seedling stage can take roughly 2-3 weeks indoors and 4-6 weeks outdoors.

As an extra tip, it is usually advisable to set up a small, weak fan to blow on at your seedlings. This will help them gain fresh air and encourages strong growth. It does this by giving the plant something to resist. As the fan blows at your cannabis plants, your seedlings will recognize that they need to put extra effort into growing and developing their structural integrity to withstand possible future sources of resistance.

You will know the time to transplant your seedling to a larger grow medium when you start seeing signs of its developing root base. Chances are your seedlings will be growing in individual, small pots. As their roots grow they will start to exit out the holes in the bottom of these pots. This shows that they need more room and are ready to be moved. Be very careful transplanting them though, roots are very fragile and any damage can have very serious implications into your cannabis plants’ ongoing health.

Light during the seedling stage

There are a lot of cultivators out there who put their seedlings under fluorescent tube lighting. Due to the weakness of florescent lighting they need to be placed quite close to your seedlings – about 5 cm above them, (don’t worry, they do not produce much heat, so this is fine). This causes your cannabis seedlings to grow broad – otherwise the plants need to “search” for light and you end up with long plants with thin, weak stems that will easily fall over. This is fine if you are willing to offer your plants support, but it is not a good foundation to lay if you want healthy, vibrant plants in the long run.

Some cannabis growers use HID lighting for their seedlings. HID lights produce a much better quality of light for growing cannabis, leading to stronger, healthier plants. The offset is that they produce a lot more heat – something your marijuana seedlings are very vulnerable too. For this reason it is important to make sure your lights are at the correct height above your plants. Start by having your HID lights 80cm above your plants, lowering them by 5cm each day until you are in the region of 40-60cm (depending on the wattage of your bulbs). Also, always perform the ‘hand test’ to see if things are getting a bit to hot.

In terms of color-band, it is best to go for a bulb within the blue spectrum. This will encourage strong and healthy stem and leaf growth.

During the seedling stage, most cultivators will use an 18/6 photoperiod. It is also possible to do a 20/4 period, with some cultivators going as far as using a 24/0 period to really boost growth.

Nutrition during the seedling stage

Generally speaking, seedlings are pretty self sufficient. However, as stated in our germination article, using a seedling/germination soil is recommended. This will have the finer, small amounts your cannabis seedlings can use. You should note, cannabis seedlings are extremely vulnerable to overfeeding, any excess will cause root burn, killing off your plants.

As a result, novice cultivators are strongly advised from adding anything to your soil other than clean, distilled water (pH of 6.5-7). Your seeds should have everything they need and will need minimal extra input from you. Just make sure they have the water and light they need and they will do fine. Once your seedlings have grown, they will enter the vegetative stage of their life cycle.