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Interested in learning how to grow cannabis plants indoors? Well, we’ve got the tips to help out. Growing cannabis (aka marijuana) is really not that different from riding a bike for the first time. You’ll be wobbly and unsure of yourself for the first few weeks, but gradually it will get better, and soon, you’ll be a pro. Miracles do not happen overnight, so be prepared for some roadblocks, mistakes, and stumbles. Growing cannabis indoors is a skill that is learned over time, like playing the guitar or nailing the perfect eyeliner wing. Be patient, be kind to yourself, and try to absorb as much information as possible in the beginner stages. Let’s get started.

The First Thing to Know About Growing Cannabis Indoors

The biggest and arguably most important tip for growing cannabis indoors is setting up the grow room properly. The last thing you want is for your weed seeds to live in an undesirable environment. Here’s something to remember: cannabis plants are picky about their setting, which includes the temperature of a room, the amount of light, and the air itself. Many smokers opt for a larger grow tent with a 600W bulb, or a smaller tent with a 400W bulb. It all depends on how much space you have. So…

Why choose a grow tent in the first place?

use a grow tent cannabis indoors

A grow tent is a great way to get the best results from your cannabis plants!

We recommend them for a number of reasons: the temperature and humidity are easier to manage, they’re light and portable, and it’s harder for pests to infect the plants. If you can pitch a regular tent out in the wilderness, assembling and disassembling a grow tent should be no problem. There are also grow tent kits on the market for beginners who need a little extra help setting up.

Next, you need to decide how many plants you want to grow and pick a pot for them. There is no rule book for the number of plants you should grow, however, each state has their own laws for the maximum amount. Oregon, for example, allows up to four cannabis plants per household. The Sea Of Green (SOG) technique can help determine the right amount of plants to fill up a grow tent. Basically, you cover the whole grow tent with small pots until it’s full. The common ratio is 10 – 16 weed seeds per square meter.

What About Pots for My Pot?

As for the pots, it’s better to start with smaller ones and transplant your cannabis plants later on into larger containers as they grow. But, if you choose to start with bigger pots, just know that you’ll have to stick to a strict water schedule to avoid problems at the plant’s root. Similar to your hair, if the root is damaged, it won’t grow.

Choosing the Best Strains

Our next tip is to choose easy-to-grow strains. Surely you’ve heard of indica and sativa before, but which is the better route? For beginners, we recommend an indica/sativa hybrid with a short autoflowering period. More advanced growers will do fine with pure strains. These are the fundamental traits to look for in a cannabis strain

  • Resistance to pests
  • Resistance to mold
  • Resistance to overwatering
  • Resistance to overly hot or cold temperature
  • Resistance to humidity fluctuations


Even when you’re growing indoors, outside temperature plays a key role. The type of strain you choose depends on your state’s general climate. If you live in California, for example, it’s typically hot and dry. But if you live in Washington, where it’s cold and wet, you’ll choose a different strain. A great tip for colder climate growers is to use a reflector to attract as much heat as possible for your plants.

marijuana indoors grow nutrients

You’ll get the best bank for your bud buck with primo nutrients.


Another key component to growing cannabis indoors is the soil. Think of soil as the womb for marijuana plants, it needs to feel nice and cozy. Organic soil is a great starting place and much easier than using inert substances. Organic soil allows for fewer mistakes, as not every soil is meant for cannabis plants. Please do not try to use regular flower soil, as the pH levels may not benefit your plants. You can buy organic soil from Biobizz, Canna, Plagon, and many other leading brands.

If you do not have access to these soils, you can always make your own at home! Talk about a fun DIY project. Essentially, what we’re looking for in a final product is something spongy and slightly acidic to create good drainage and moisture retention. So, grab your chef’s hat and let’s start putting the following ingredients together.

  1. 25% Yellow peat
  2. 30% Black peat
  3. 15% Coco coir
  4. 20% perlite
  5. 10% Worm humus

We don’t expect you to have these ingredients just lying around the house, but you can purchase them from a plant nursery or Amazon. Consider these ingredients food for your soil. Like any living creature on this planet, plants need to eat! They get the munchies just like we do after a bowl or two. At least 17 elements are known to be essential nutrients for plants, including

  • Nitrogen
  • Phosphorus
  • Potassium
  • Calcium
  • Magnesium
  • Sulfur

These are what you call macronutrients — the main ones that every plant needs in their diet. Slow-release, solid organic nutrients are best to begin with because you won’t have to add liquid fertilizers. Brands like Plagron and Aptus sell all-in-one fertilizers that come in a powder form. Not your typical soil look, so don’t panic. You brought the right stuff.

The Waiting Game

best growing cannabis indoors tips 2018

Patients and perseverance produces premium pot!

After laying down the soil, your plants are fully equipped to grow up big and strong! Leave them alone for the most part, but don’t forget to routinely check the tent for proper air circulation, humidity, and lighting. In the following days or weeks, you’ll notice your weed seeds have sprouted above the soil. Great success!

Your cannabis plants don’t need 8 glasses a day

In these early stages of plant-hood, it’s vital not to overwater or keep your plants in too large of pots. Roots love feeling snug and too much water can lead to root rot. You’ll be able to tell if you’ve been under-watering your plants because the soil will feel dry to the touch. Gage it that way. Consistency is key, so it might be helpful to set an alarm on your phone. Do not remove your plants from the grow tent unless you spot a pesticide and only re-plant them once or twice.

And there you have it! Those are our tips on learning how to grow cannabis plants indoors. If you’re up for it, Pacific Seed Bank is the perfect place to buy cannabis seeds and get started. As mentioned earlier, we offer sativa/indica hybrid weed seeds for the easiest growing process possible. The important thing to remember is to have fun, and treat your marijuana plants as if they were your own children.

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