Best Pots For Growing Weed

Last updated: 31 January 2020

indoor growing pots

If you know even a little about pots or growing containers, you’ll be well aware that they are not all the same. Each has a particular design that matches the grower’s needs. Similarly, growing pots don’t just differ in terms of size. Different kinds of containers are present in the market, ranging from regular to advanced pots.

What Do Cannabis Roots Want?

As far as pots go, cannabis requires one thing more than any other, and that’s a healthy and safe place to develop its roots. Cannabis fails to thrive optimally if the roots are not healthy, the reason being that the roots take charge of nutrient absorption, water retention, helping with vegetative growth and serving as an anchor for the plant.

cannabis pots

Here are the 3 major elements that all cannabis roots require.

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As you may know, retaining water is vital to the health of any plant. Without water, cannabis doesn’t thrive and ends up dying after withering for a certain period. Of course, the growing medium is a key part of this process, so choosing the right container to house your plants could do you a world of good. Therefore, make sure to mitigate any damage by providing proper drainage access to your roots. If you want to figure out the quantity of water your plants require, consider factors like plant size, overall plant health, outside temperature and plant growth stage.


Just as moisture is vital for a plant’s health, so is oxygen access just as crucial. Keeping this information in mind, go for containers that offer sufficient oxygen to develop the plant’s roots while ensuring they don’t allow the plant to gain too much exposure to harmful elements. Various container varieties provide the roots with extra oxygen exposure through an assortment of perforation styles.

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The plant’s roots use oxygen by absorbing it directly from water or soil that contains dissolved oxygen. The quantity of dissolved oxygen present in water depends on the water’s temperature. Cold water contains a higher quantity of oxygen while warm water has lower amounts.


Roots need optimal conditions to absorb nutrients effectively. Nutrient availability, optimal temperatures and pH balance play a key part in effective nutrient absorption. Just like animals, plants also go through various stages of life. They need different nutrition in all stages to thrive and grow. Of course, using an optimally-sized pot and excellent soil is vital, but nutrition is just as important.

New growers often wonder whether they should take the chemical or organic route for their plant’s nutrition. The reality is that both have their place. Each offers a different option, which means you need to decide which to use according to the particular requirements of your plant.

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Types Of Pots

Tons of options are out there when it comes to pots. The place where you’re growing your cannabis, how you plan to grow it and the type of pot you want to utilize are the main determinants. As mentioned earlier, every pot is different. Let’s take a look at the different types of pots that growers prefer.

Standard Plastic Pots

plant pot sizes chart

This is one of the most common pot types. You can find them easily almost anywhere and they are also quite cheap. In fact, standard pots are mostly available in plastic form. In case you go for these standard plastic pots, make sure you get a matching saucer to go with them. It will come in handy to catch runoff water present beneath the pot.

A vital thing to keep in mind about standard plastic pots is that they should contain drainage holes to prevent water logging. Drainage holes are present at the pot’s bottom. Not every pot has pre-bored holes, so you may need to create these yourself before beginning to utilize the containers for growing your plants.

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  • Transplanting is affordable and simple
  • Drainage is quite solid
  • Overhead costs are very low


  • Could have airflow issues (depending on growing medium)
  • Durability is on the lower side since structural damage and cracks could occur over time
  • Standard pots are unable to prevent temperature fluctuations by shielding root systems

Standard Terracotta Pots

grow bags vs pots

Also referred to as ceramic containers, standard terracotta pots are similar to standard plastic pots. The only difference between the two is the material. However, terracotta pots are highly beneficial for growers who plan to grow weed in warm climates. Terracotta pots are also heavier in comparison to plastic pots. This pot type is naturally able to store and soak up extra moisture, creating a cooling effect. This is the reason why hot climate growers prefer it so much.

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  • Pot’s heavy weight comes in handy to anchor bigger plants
  • Retains low temperatures and absorbs moisture on hot days


  • Heavy weight of this pot sometimes creates difficulty in transporting plants
  • Drainage is not at all optimal, and drilling holes is a labor-intensive task requiring the use of special tools

Fabric (Smart) Pots

growing marijuana in pots

Fabric pots and smart pots are one and the same. Their purpose is to ensure that plants do not become root-bound. Instead of growing in cycles as growers usually do with standard closed pots, fabric pots air prune all the roots once they reach the container’s sides. Because of this, the roots can grow without any hindrance, in turn improving plant growth. Fabric-growing bags or pots also have another advantage – they make sure you do not overwater your cannabis plant by a single drop.


  • Fabric pots have ideal drainage, which is perfect for well-maintained gardens
  • Roots receive more airflow in these pots
  • Storing fabric pots is very convenient
  • Promotes strong roots


  • Plant support can be tough because of the flimsy structure, as these pots tend to dry out fast
  • Needs more maintenance and attention

Air Pots

best pots for growing weed

Air pots are quite similar to the smart pots discussed earlier. They are plastic containers that possess side openings which help with automated pruning of your cannabis plant’s roots. However, as with fabric pots, you have to water air pots regularly, as they tend to dry out quickly in comparison to plastic pots. Air pots are quite sturdy, so you don’t need to worry about them tipping over. Because air pots tend to leak water from side openings, make sure to keep them higher than regular size saucers.


  • Perfect airflow and drainage
  • Excellent perforation helps to prune and catch roots effectively


  • Air pots are slightly expensive because of their complex design and material
  • They need extra care and watering in comparison to regular containers
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Hempy Buckets

how big should a pot be for a plant

Hempy buckets are just simple buckets that contain a hole on both sides. These buckets are filled inside with coconut coir soil and perlite. The bucket works as a passive watering setup by retaining a decent amount of water in the section that contains pure perlite. The reason why hempy buckets use perlite is because of their light weight and perfect water drainage abilities. Essentially, it tricks the plant into thinking that it has a natural pocket of water.


  • It would be wise to go for a bucket that is not transparent, as algae tends to grow in transparent buckets due to sunlight exposure
  • Hempy buckets do not require frequent watering and attention, so are perfect for growing bigger plants


  • Using hempy buckets could lead to nutrient or root problems once in a while due to the presence of stagnant water at the container’s bottom. The more water there is at the container’s bottom, the more nutrients tend to rinse away.

Maintenance Of The Pot

Although pot maintenance sounds like a daunting task, it really isn’t. In fact, it would be fair to say that this is quite easy. Consider your pot’s material before you begin to maintain it. Make sure it provides adequate drainage so that water can easily pass through. You would also benefit from pairing your containers with trays or saucers. The reason for this is that by design, they catch runoff water as it passes out from the holes. It is vital to collect moisture at the end of every watering session – some growers choose automated or vacuum systems for collecting water.

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What Container To Grow Seedlings In

what is the best pot size for weed

The most important thing to guarantee a healthy grow is to make sure your container provides sufficient drainage to the seedlings. Mostly, seedling pots tend to be quite small and do not hold a large quantity of growing space. Because of this, the soil dries out much faster than you might imagine, which decreases the risk of overwatering. Party cups or solo cups are also quite common among growers, and are excellent options to grow seedlings effectively. Remember to cut a couple of drainage holes below the cup. You may need to transfer the larger grows to a different container later on if and when they become larger.

Which Size To Choose For Indoors/Outdoors

biggest yield from 10 gallon container

Always using the same type or size of container simply doesn’t do the trick when growing weed. For instance, since autoflowering varieties are not too tall, you can easily store them inside medium or small size containers. When you choose the size of growing pot, think about your cannabis plant’s final size.

A pot size of around 2 gal (7.5 liters) would be an ideal starting point for a plant close to 1ft (30cm) in height. Just keep in mind that every cannabis variety grows differently. While some strains are slender and tall, others can be bushy and wide. It could help you to find the correct size of pot right from the start.

How Does Pot Size Affect Yield?

The size of a pot has a major impact on the yield. A plant’s roots require adequate space in order to properly grow. Without enough space, plants become pot-bound, which deteriorates your yield quality. Keeping a rough estimate of the yield’s final size is a wise choice, as this helps you to choose an adequate pot size that won’t negatively impact your yield.

Final Verdict

Selecting a pot is a decision that most experienced growers base on maintenance. Some containers need less maintenance, as you do not need to water them often. Other containers may require frequent maintenance, and you may need to water or monitor them regularly. It all comes down to how much time you can dedicate to the container on a daily basis.

Finally, it would also be advisable to consider transplanting. You may need to learn this skill, as some yields grow larger and require transplanting to separate containers.

Hello folks !I'm new to this so all help would be gratefully appreciated. I do have a horticultural background from years back. Still you learn something new everyday.So which pots and what size do people recommend to put under a marshydro FC6500, also how many autoflowers could or should fit underneath the lamp. The actual grow room size is 1.8m X 2.3m X 2.3m.It will be used from seed to crop.
That's depends on the whole installation, but you need to make sure the plants won't block each other's access to the illumination
Hi guys i need your advice i don’t know what to choose air or smart can you tell which one is better?
I use smart pots and really like them. I've never tried air pots though. The cost of air pots alone makes me want to try them even less.
When researching this a few years ago I found that the guy who designed airports also created the smartpot. The airpot is the version he created after the smartpot to address some of the issues with the smart pot (drainage, bottoms always stay wet etc). I'd go with airpots it was my intent at first but they were not stocked locally and are pretty expensive so i opted for some reg pots when building my new room but this is a future upgrade for sure.
Thank you guys for advice !!!!! I will choose air pots :D
How did the air pots work out for you.. Iv been thinking about upgrading my growing containers, but I heard air pots are a little messy.
Hello Noname14, We are happy to hear that you´ve chosen the best option for you. We wish you best of luck in your hobby.
I realize that plants get bigger and yield more in smart pots. But what about the potency of the bud? Is it greater in smart pots?
I love Smart Pots.. I prefer them to plastic pots. That being said, I don't see how they would increase potency one bit.
I really rate smart pots, I use 26L ones. Find them better than plastic pots nice and round and a better root mass IMO. I do think it all comes down to personal preference. You could do one smart pot one plastic and then see which you prefer.
I love smart pots too. I will never use plastic pots again. Yes, the soil dries out faster and you need to water more but that is not a bad thing. I feel it makes feeding the plants more effective because I can water every day and feed every day flushing once a week of course. More oxygen makes it to the roots so the roots are healthier and thus grow faster making healthier plants.
Perfect article! Greatly appreciated!
I am so happy to finally find out some information about the size of pots/containers I will need to grow a nice sized plant. I would like to hear more information on this topic.
Ever since I came across fabric pots and learnt of air pruning I was sold. Even though it was a bitch to transplant, all I cared about was results. Then I came across air pots. Same air pruning benefits, 100,000% easier to transplant.
I have always been under the impression nothing beats going direct in ground when the soil is high quality. Really, to me it most depends on your area. If you're in a dry or drought prone area then I think you should stick with in-ground planting (it's my preferred, in raised beds though). If you're in an area where you're going to get summer rains and higher humidity, then I think big-ass Smart Pots would be a good way to go.
I bought some 15 g smart pots hoping this will be big enough for outdoor/ big yield ,I almost wanted to go bit bigger ? What y'all think ?
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