How Many Marijuana Seeds Per Pot

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Question: How many weed seeds do you need to grow a plant? Here you find all the answers about the number of seeds you need to grow a nice weed plant! Find out how many weed seeds you should be using per pot to ensure a healthy and bountiful cannabis growing experience! If you’ve ever wondered how many weed seeds per pot is ideal, you are in the right place. Read our detailed guide on factors determining the number of seeds you plant.

How Many Weed Seeds do You Need to Grow a Plant?

To grow weed, you need high quality marijuana seeds. But how many seeds do you need to grow weed? And then there’s the question: how many marijuana plants do you want to grow?

This ultimately determines how many seeds you need. Based on your wishes, you calculate the number of marijuana seeds you need.

How many seeds do you need to grow weed?

Basically, you need one cannabis seed per weed plant. After all, from one seed a single plant grows. However, it is possible that not every seed germinates. After all, you are dealing with a natural product. It is therefore advisable to have an extra seed on hand.

Factors that determine the number of seeds per plant

So, what if you plan to grow five plants and one or more seeds don’t germinate? Then you won’t achieve the intended yield, and you have to purchase seeds again. It’s therefore wise to use several seeds per plant.

In order to calculate exactly how many cannabis seeds you need, you have to take two determining factors into account:

Type of seed (regular or feminized)

In this blog, we assume that you buy cannabis seeds for growing cannabis. For this, you can choose between regular seeds or feminized cannabis seeds. Both types differ from each other and have an influence on the final result. The differences are explained below.

Regular seeds

With regular cannabis seeds, the genus of the plant has not yet been determined. When choosing regular seeds, the chance that the seed will develop into a female plant is about 60%. The chance that the seed develops into a male plant is therefore 40%. And because male plants do not produce buds (read: marijuana), you need several marijuana seeds to increase the chance that you will eventually grow a female plant.

Feminized seeds

With feminized cannabis seeds, you don’t have the risk of a flowering male plant. Because female seeds produce 99.9% of a female weed plant. This is why most growers choose feminized seeds or autoflowering seeds

Autoflowering seeds are basically feminized seeds, but have the advantage that they flower automatically (read more about the difference between feminized cannabis seeds and autoflower seeds). However, feminized seeds are more expensive than regular seeds. Depending on your budget and growing skills, you will choose the type of weed seed.

Germination rate

In addition to the type of cannabis seed, nature always has an influence on the germination process. After all, the cannabis seed is a natural product and this means that not every seed is viable and germinates.

From experience, we know that 93% of the cannabis seeds grow into a plant. This is of course a very high success rate, but not 100%. So you will have to use extra seeds in order to have the certainty of eventually becoming a weed plant.

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We therefore advise you to take into account an average germination percentage of 90% when calculating the number of seeds you need for your cultivation. This gives just that little extra certainty.

Reading tip: Our blog about ‘Germinating marijuana seeds’ explains how to optimize the success rate to 100%.

How many seeds does it take to grow weed?

Based on the above information, it’s quite easy to calculate how many seeds you need to grow weed. For your convenience, we have placed the results in the table below.

How Many Weed Seeds Per Pot Should I Use?

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Although the answer is quite simple, it’s often a common question when you’re getting into growing cannabis.

How Many Weed Seeds Do You Use In A Pot?

You only need to use 1 weed seed per pot of cannabis you’re looking to grow. A single cannabis seed will lead to one plant, and you don’t want multiple plants in a normal-sized growing pot because they won’t have enough room to each grow which will lead them to compete against each other for resources.

By sticking to one cannabis seed per pot, you give your plant the best chances of growing big buds in a healthy manner.

Along with this, if you’re planting multiple cannabis seeds in one pot it increases your risk of plant disease and issues such as spider mites which can effectively destroy your grow before you even get to harvest.

So no matter if you’re looking to grow cannabis in your closet or you’re looking to grow cannabis outdoors, you need to stick to only one weed seed per pot.

Cannabis seeds are too expensive to have some of them die as they’re trying to grow. If you are looking to purchase cannabis seeds take a look at our guide on how to buy cannabis seeds online and get them delivered straight to your front door!

How many weed seeds per pot should you plant?

Cannabis growing is easy but takes time to master. To better your chances of success, you need to get the basics of weed growing right from the beginning. For instance, you should know how many weed seeds per pot are required and the factors that’ll shape your decision.

Based on the type and quality of weed seeds, we’ll help you determine the number of marijuana seeds you need.

Understanding seed types

When buying seeds to grow weed plants, you’ll have to choose between feminized and regular cannabis seeds. They differ from each other and affect your results.

Regular seeds

Regular seeds develop into female and male plants at a 2:3 ratio, but only females bud. To increase your chances of getting a female plant, you’ll need to plant several cannabis seeds per pot.

When you do this, remember to remove the males before they fertilize females and reduce their potency.

Feminized seeds

Feminized marijuana seeds are harvested from weed plants treated with a silver solution which inhibits ethylene production. Ethylene is a crucial element in the sex-determination process in weed plants.

The resulting cannabis plants produce anthers filled with female genetic material only. After fertilization, almost 100% of the resulting marijuana seeds develop into female weed plants.

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Seed quality and germination rates

The quality of cannabis seeds you purchase will also affect how many weed seeds per pot are required.

Fresh marijuana seeds have high germination rates, so you can plant fewer marijuana seeds per pot and get good results. Have in mind that weed seeds are fragile and as such, you should germinate them before planting.

Now, despite having high germination rates, germination isn’t 100% guaranteed. It’s, therefore, prudent to purchase extra seeds to grow weed to avoid inconveniences.

For instance, if you want one marijuana plant, we recommend buying three regular weed seeds or two feminized weed seeds.

When dealing with regular seeds, the rule of thumb is to buy twice as many seeds as the plants you want.

How many seeds do you need to grow a weed plant in a pot?

The ideal method of growing cannabis is following the one-pot rule, but some scenarios require multiple cannabis seeds per pot.

One seed: can you grow a weed plant with one seed?

Cannabis plants are annuals, meaning they take a short time to mature. They bloom in about two or three months and need enough space and care to grow healthy.

With that said, here are some pros and cons of growing a single weed seed in a pot.

Advantages
  • Roots have enough room to spread

Root growth depends on the number of weed seeds per pot and the space available. With sufficient space, the roots can grow wider and deeper to take up nutrients and oxygen. As a result, the weed plant will grow wider, taller, and produce denser and larger buds.

Restricted root growth leads to weak cannabis plants with great intermodal distance.

  • There’s no competition for nutrients

The number of cannabis seeds per pot determines how much the plants will compete for nutrients. With multiple cannabis plants per pot, competition will be stiff.

Watering the cannabis plants often and adding more fertilizer might help, but it’s not an easy process. In the end, your weed plants might suffer from nutrient excess or sustain damage from overwatering.

  • Easy to isolate pest-infested or sick weed plants

The best way to deal with sick, moldy, or pest-infested plants is to isolate them to protect the others. When it’s only one seed per pot, you can move the cannabis seedling to a treatment area.

But if you have many weed seeds per pot, the isolation process is harder to manage.

  • Nutrient deficient weed plants are treated individually

When a weed plant absorbs excess nitrogen, it might die. The solution is soil flushing using pH-balanced water. If there’s one plant per pot, the flushing won’t affect healthy plants.

You can treat the plant by giving it smaller doses of fertilizer until the cannabis seedling problem corrects itself.

Disadvantages
  • Uses too much space

Growing individual weed plants in single pots uses a lot of space. For instance, if your growing area is a standard growing cabinet, you can only fit three plants.

Multiple seeds: how many weed seeds per pot?

Growing several marijuana seeds per pot might work, but you need to plan for it.

Consider the following pros and cons before you dive in.

Advantages
  • Saves space

Growing many weed seeds per pot saves space, but you need to use a large pot to give roots space. Medium-sized indoor cannabis plants need a 5-gallon finishing pot per seed to grow healthy.

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When growing multiple weed seeds per pot, bear in mind that each plant will need about 2 gallons of soil for every 12-inches of growth in the vegetative stage. Knowing how tall your strain of choice grows is helpful to determine how many seeds you should have in a pot.

  • Perfect for breeding weed plants

Growing males and female weed plants in a single container increase the chances of pollination. Unlike when pollen has to travel long distances.

Having many marijuana seeds per pot makes it easier to monitor the plants for good health.

Disadvantages
  • Hard to prevent accidental pollination

If you’re planting regular weed seeds for consumption, having many weed seeds per pot makes it harder to prevent pollination. As a result, you’ll get a lower yield.

FAQ

Can you plant multiple weed seeds in one pot?

Yes, you can. To avoid overcrowding, you should use a large pot and space the weed seeds evenly within it.

How long does it take for weed to sprout?

This doesn’t depend on the number of cannabis seeds per pot but on their quality. Fresh weed seeds sprout within two days, while older dried seeds take about a week. You can transfer dried weed seeds to pot soil once roots grow 5 mm long.

Can you put weed seed straight into the soil?

Yes, but you have to keep the soil moist enough throughout germination. You should bury your weed seeds twice as deep as they are wide for best results.

What happens if seeds are planted too close together?

When you have several weed seeds per pot, they’ll germinate but they’ll compete for nutrients, oxygen, light, and water. The larger weed plants will outgrow the rest and shade out their competition.

Final Thoughts

How many seeds does it take to grow weed plants?

In an ideal situation, every weed seed should germinate but this isn’t always the case.

Instead, the number of seeds you need to guarantee a female weed plant depends on seed type and germination rates.

With regular seeds, you’ll need more seeds than you would with feminized plants. On the other hand, feminized seeds cost more but they produce more female plants hence less work.

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