Discover the complete plant life cycle of the cannabis plant to further your knowledge of marijuana trimming and production. What causes seeds in buds while growing cannabis? What does it mean to find seeds in your marijuana buds? Is it something to be worried about? This is something that happens while buds are Re-vegging is a process that allows you to get a second harvest out of a cannabis plant. Learn how to re-veg weed plants from Leafly.
From Seed to Bud: The Plant Life Cycle of Cannabis
The popularity of marijuana plants is rife at different angles. However, it is the simple life cycle that makes the herb unique. From a seed into a mature bud, the cycle is one of the easiest to master. Below is a breakdown of how the plant grows until it reaches maturity.
The life of a cannabis plant starts immediately when the seed is sown into the ground. The rate of germination of the seed depends on the conditions it is exposed to. First, if the seed is watered regularly, it germinates at a fast pace. Colour and texture determine the quality of the seed, and to a great extent, the time it takes to germinate.
A healthy seed should be dry and hard. It should also have a dark-brown color. It is advisable to avoid sowing seeds that are white or green since the probability of germinating is negligible. High-quality cannabis seeds take between five to ten days to sprout.
The Seedling Stage
The seedling stage in cannabis takes place immediately after the seeds germinate. A standard cannabis seedling should have leaves containing a single-ridged blade. During the growth stage, the cannabis plant should be green.
During the seedling stage, it is advisable to reduce the rate of watering to protect their delicate stems. Besides, the risk of the plant developing mold and getting diseases is also higher during the seedling stage.
The seedling should be watered after two days. Overwatering the seedlings is a common mistake many growers make, which might affect the time taken for the cannabis to grow and develop. Also, the seedling should be kept in an area with free circulation of air and sunlight. This allows the chlorophyll to form and crucial cannabinoids to accumulate in the leaves.
If the right conditions are adhered to, the seedling stage should take between two and three weeks. Most importantly, the seedling stage should also be exposed to a source of light for at least 18 hours a day. Sunlight is the most common source of light used by cannabis seedlings. However, the sophistication in technology has led to the improvisation of LED lights, which provide the same light properties as the sunlight.
The vegetative stage is considered the time when the marijuana plant starts to mature. During the phase, the leaves become full, and the stems sturdier. The rate of growth also hastens, giving the plant a bushy appearance.
During the vegetative stage, it is advisable to transfer the plant to a place where it will attain the full size. In addition, the watering style should be changed. In this case, the water should be poured further from the stalk to protect the roots from being exposed. The stage takes approximately three to sixteen weeks and requires about 18 hours of light.
During the flowering stage, buds start to form on the cannabis plant. It is also during this stage that the sex of the plant begins to manifest. Once the male parts have been identified, they can be separated to prevent them from germinating the female ones.
The formation of buds is more prevalent in week 6 and 7 in the cycle. It is also advisable to avoid pruning leaves and branches two weeks before the marijuana starts to produce flower buds.
During this phase, the plant should be watered less, and the plant exposed less to light. The plant should receive less than 12 hours of sunlight in a day. Less exposure to light allows the cannabinoid levels in the plant to increase. The rate of watering during this stage should be lower.
Once the buds have matured, harvesting can take place. It involves plucking the branches from the plant and hanging them to allow excess moisture to evaporate. It is also during harvesting that bud trimming takes place. This consists of removing fan leaves from the buds together with sugar leaves. However, the removal of sugar leaves from the buds is less common since they contain a high amount of THC. Once the marijuana trimming has taken place, the seeds can be prepared for planting again.
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What causes seeds in buds while growing cannabis?
What does it mean to find seeds in your marijuana buds? Is it something to be worried about? This is something that happens while buds are forming in the flowering stage, but can be prevented with the right steps. Learn more below.
There’s a seed in my bud!
Sometimes you don’t see the seeds until they fall out of your buds
What causes seeds?
Seedy buds are the result of pollination. What does that mean? Cannabis buds are flowers. Like other flowers, they make seeds when pollinated. Cannabis buds get pollinated when they come into contact with cannabis pollen while the buds are forming.
Seeds happen when pollen gets on the hairs (pistils) of buds as they’re forming. In other words, seeds in weed are caused by pollination.
This bud is full of fat seeds because pollen got on the pistils during bud development.
Pollen typically comes from the pollen sacs of a male cannabis plant. Male plants spray pollen everywhere when their flowers are mature. Sometimes female cannabis plants will produce pollen (known as herming) due to genetics or stress. Any source of pollen, whether the plant is male or female, can pollinate buds in the vicinity and cause seedy buds.
If you’re not growing with feminized (all-female) seeds, about half the plants will be male and grow pollen sacs (male flowers) that release pollen. Unless you want seeds, male plants should be removed from the grow room immediately because they will otherwise seed all your buds.
Seeds are caused by the presence of male flowers while buds are growing. Male flowers release pollen that pollinates buds and causes seeds to grow.
Any time you see “bananas” or “balls” it’s important to separate that plant immediately to prevent possible pollination. These are the result of a hermaphrodite plant (“herm”) and these structures also release pollen.
Example of a hermaphrodite plant making seeds
You may notice a bunch of little yellow growths in these buds. They almost look like mini bananas. This plant is “herming” or growing male flowers that spew pollen everywhere. If this plant isn’t removed from the grow space, it will pollinate itself and all other plants in the area, causing seedy buds
This is the same plant. You can see that some of the pure white hairs have turned brown early. This is because those hairs were pollinated. If this plant were allowed to continue flowering, there would be a seed growing at the base of all those brown hairs.
You may not realize that seeds are forming while your buds are growing
But once they get really seedy, buds may look like they have huge plump calyxes/bracts (female flowers) or they may even be misidentified as pollen sacs (hermie/male flowers).
When handling the buds after harvest, you may see seeds or hear them as they fall onto the surface below
Does it mean the weed is bad? No!
If it’s very seedy the buds may not feel as potent, though a few seeds here and there won’t make much difference in bud potency. The main problem with seedy weed is that you are getting less smokeable bud for the amount of total mass there. If it is seedless, you will get more bang for your buck. Seedless bud (sinsemilla) is considered to be the highest quality and most potent type of weed.
Seedy weed is still good to smoke
However, cannabis plants waste energy developing seeds that could have been used to fatten buds. When a bud has lots of seeds, it often isn’t as big and plump as it would have if the plant had not been pollinated. Notice how all the mass of this bud is in the seeds. The rest of the bud is airy and small.
Are seeds good to grow?
I’ve seen some growers get impressive results with bagseed (seeds you find in a “bag” of weed), but overall results seem to be hit or miss. Plants can grow in odd ways and often either the yields or quality isn’t as expected. The problem is that seeds often don’t “breed true” to the buds that they came from.
“Found” seeds can sometimes produce excellent results
But sometimes the plants grow poorly or buds don’t turn out anything like the buds you found the seeds in
That is why many growers either stick to clones (which are exactly the same as the “mother” plant) or purchase seeds of a stabilized strain from a trustworthy breeder. Starting with stable genetics helps ensure each of the plants will grow the way you expect, and buds have the smell, yield, and potency you want.
If you’re not sure what strains to get, here are a few recommendations. These strains produce excellent weed and are generally easy to grow. These seeds are all feminized, which means they will only grow female plants (no pollen to worry about!) Click the links for more information.
– top-shelf looks and smell with classic effects reminiscent of 90s buds but stronger. Easy to grow. – this version is MUCH more potent than regular White Widow. The buds tested between 24-26% THC. Don’t plan to do anything else that day ? – for those who are looking for a face melter. These buds test up to 28% THC and produce buds with quintessentially “American” looks and smell. The mental and physical effects may be too intense for most beginners. is a good choice for commercial growers with high THC up to 30%, big yields, and a short flowering time. is a potent Sativa hybrid with great yields and uplifting unique mental effects is an autoflowering strain that produces photoperiod-quality buds in about 70 days from seed to harvest.
Platinum Cookies is essentially a more potent version of the popular Girl Scout Cookies strain.
How can I tell if it’s a viable seed?
Good seeds are often dark and relatively hard. Very pale or white seeds that can be easily crushed between the fingers often don’t sprout. However, I have been surprised to find some very flimsy seeds sprout and produce amazing plants (we aren’t breeding them for hard seeds after all) so when in doubt, I highly recommend doing the true test to see if the seed is viable – try to germinate the seed and see if it sprouts.
The best way to tell if a seed is viable is to try to germinate it and see what happens.
How to re-veg marijuana plants
Cannabis is an annual flowering plant, its life cycle limited to just one season. In the wild, it grows from a seed, flowers, and dies, all between spring and fall. Once a female plant dies, it will drop seeds, which are responsible for carrying genes through to the next growing season.
But it’s possible to hack this process to give cannabis plants a second growing season. A grower can manipulate a plant and force it to revert from the flowering stage back to the vegetative stage again. This process is known as re-vegging, or regeneration, and it allows you to harvest buds from a plant, then grow the same plant again for a second harvest of buds.
Cannabis has a short-day photoperiod, meaning it transitions from a vegetative period to a flowering period—when it starts growing buds—because the amount of light it receives reduces. This happens outdoors as autumn approaches and days become shorter. Indoors, growers “flip” weed plants into the flowering stage by manually reducing the amount of light they get each day.
Altering a cannabis plant’s photoperiod schedule after harvest will allow you to re-veg it.
Benefits of re-vegging cannabis plants
Reduce vegetative periods
A cannabis plant that has undergone a full growing season will have a complex and robust root system. If re-vegging a weed plant, it will move through its second vegetative phase quicker if it has a mature root system, whereas clones or seeds will take longer to establish roots.
Eliminate mother plants
Growers will sometimes keep mother plants, which are plants that always stay in the vegetative stage for the purpose of cloning only. But keeping mother plants takes time and space. Re-vegging allows you to get rid of mother plants, freeing up space in your grow for plants that only produce buds. It also saves time and resources, as you won’t have to tend to mother plants.
The process of taking a clone from a flowering plant is a re-vegging technique known as “monster cropping” (more below), and it can produce more vigorous and bushier plants. If done correctly, monster-cropped clones have the potential to create plants with higher yields the second time around because of an increased vegetative mass, stronger stems and branches, and more nodes for potential buds.
Cloning/Preserving a phenotype
If cloning a weed plant, growers usually need to take a clone of a plant before it begins flowering. But if a grower neglects to for any reason, that phenotype, or the genes of that specific plant, will get lost. Re-vegging is the only way to preserve an exact replica of a particular phenotype once it has transitioned into the flowering state.
Disadvantages of re-vegging cannabis plants
Re-vegging is hard to successfully pull off, even for seasoned growers. It takes a few weeks for new growth to appear so you might be wasting time and space waiting for new growth only for it to not happen.
Most growers who re-veg say that yields decrease the second time around. So while re-vegging may cut down on the amount of time it takes to grow a plant, it might not produce as much.
Stress on the plant
The re-vegging process is highly stressful on a plant and even if it does re-veg successfully, aberrations often occur, such as unusual leaf growth and hermaphroditism. Re-vegged plants are more delicate and must be given more attention and care.
Types of re-vegging
There are a few ways a cannabis plant can revert from its flowering stage back to a vegetative stage.
Probably the easiest method, this will allow you to harvest a plant for buds and then re-veg it for a second growing season. This is typically done with indoor plants, as you’ll need to control the amount of light they receive.
When harvesting a weed plant, leave a few healthy buds and branches intact at the base of the plant. Reset the plant’s photoperiod back to a vegetative schedule: 18 hours of light/6 hours of dark a day (as opposed to the 12 light/12 dark schedule it had when flowering).
Also, change the plant’s nutrient regimen, giving it nutrients more conducive to early-stage growth. It will need more nitrogen for root and leaf development, as opposed to the high amounts of potassium and phosphorus it likely received during flowering.
Post-harvest re-vegged cannabis plants often take a little bit of time to take off at first and some strains may not even be receptive to this method at all. Early growth on a re-vegged plant may exhibit stress-induced mutations like single-fingered leaves and odd node patterning, but these issues should go away after a few weeks if re-vegging is successful. Plants that re-veg successfully can display increased vigor after the initial transition.
As mentioned above, cloning a plant while it’s in the flowering stage is called monster cropping. To successfully do this, take clones from the lower branches of a plant when it’s in the second or third week of flowering.
Take a clone as you normally would, but be sure to remove all visible flowering nodes from each clone. This will improve the clone’s ability to root out by halting flower production within the cutting.
As with post-harvest re-vegging, monster cropping may result in stunted and mutated growth at first, but with proper care and training, this method can produce massive plants with increased vigor and foliage growth.
Cannabis plants will unexpectedly revert back to vegetative growth if there is a disturbance in their photoperiod schedule—for example, if they receive 12 hours of light a day for a while, and then start to get more than that.
This can occur both indoors and outdoors, usually because of a light leak or a light timer malfunction when growing indoors, or from planting outside too early in the season when growing outdoors.
Even the tiniest of changes in a cannabis plant’s light cycle can cause it to flip back to a vegetative state, and some plants may even turn hermaphroditic, growing both male pollen sacs and female flowers.