Growing cannabis indoors

Growing cannabis indoors – explained simply

Updated: November 2025 | Indoor Cannabis Cultivation
Author: Cannapot Grow Team | Reading time: approximately seven minutes

Getting started with indoor cultivation

Many people feel more comfortable growing indoors. It's quiet. No rain, no wind, no prying eyes. You close the tent flap, turn on the light, and somehow everything runs at its own pace.

This isn't a comprehensive guide. It's more of an honest starting point. What really matters at the beginning is having the right seeds, a little patience, and a feel for the plants. Once you get started, you begin to notice the little things. How the leaves turn. Or how the air smells as soon as the lights come on.

Expert tip:
Keep it small. A small tent, simple soil, a few seeds. That's how you learn the most.

Why many prefer to grow indoors

Indoors, you have control. Everything stays the same until you change something. That makes a lot of things easier to understand.

You control everything when growing indoors
Light, air, humidity – it all depends on you. The plant only reacts to what you do. It's like a small ecosystem that you have in your hands. A little unfamiliar at first, but later almost soothing.

It is private
No one is watching. No wind, no neighbours. Just you, your tent, and a little greenery. That makes it more relaxed.

You can start anytime
Indoors, the season doesn't matter. January, August, it doesn't matter. Once you know how it works, you can do two or three rounds a year.

Expert tip:
Write things down. When you planted, how much you watered, when the smell got stronger. It will help enormously next time.

Finding the right seeds
The seeds determine everything. How long it takes, how big the plant will be, how sensitive it is. It all starts there.

If you're new to this, go for feminised Indica autoflower seeds. They stay small, flower on their own and don't need complicated light control. Plus, you don't have to deal with male plants.

Types of seeds – explained simply

Regular seeds
These can become male or female. Male plants do not produce flowers and are often removed early on. This requires some experience. Some people like this because they enjoy experimenting. For beginners, however, it can be rather confusing.

Feminised seeds
These almost always grow into female plants. Each one produces buds, i.e. flowers. No guesswork, no sorting. That's why they are so popular with indoor growers.

Autoflowering seeds
These plants don't care about the light cycle. After a few weeks, they simply flower. They stay small, grow quickly and fit well in tight spaces.

Expert tip:
If you use autoflowering seeds, put them straight into their final pot. Transplanting slows them down.

The difference between Indica, Sativa and Ruderalis

Indica
Small, sturdy plants. Thick leaves, stable structure. They come from colder regions, so they are less sensitive to temperature fluctuations. They grow evenly under lamps. They flower faster and usually have a relaxing effect.
Good for: small tents, quiet conditions, evenings when you want to switch off.

Sativa
These plants grow tall and take longer. They like warmth and bright light. Sometimes you have to restrain or prune them indoors. Their effect is more stimulating, clearer, somewhat more alert.
Good for: larger rooms, patient growers, daytime.

Ruderalis
A wild variety, robust and small. Mostly used to breed autoflowering varieties. On its own, it produces mild results, but it makes modern hybrids faster and more reliable.
Good for: short cycles, studying, small setups.

Why feminised Indica autoflower seeds make life easier
If you just want to get started without too much stress, these are the best seeds. They grow quickly, stay compact and always produce flowers.

Many people like them because
- they are simple – one light change, no guessing.
- they are quick to finish – you can harvest after eight to ten weeks.
- they require little space.

Expert tip:
Start with one strain. Too many at once make it difficult to understand what is working well and what is not.

Two strains that many people start with

Blackberry Auto – FastBuds

Quick overview

Feature	Details
Type	Feminised Autoflower (mostly Indica)
Genetics	Blackberry Kush × Ruderalis
Flowering time	9–10 weeks from seed
Height	70–120 cm
THC content	around 23 %
Aroma	sweet, berry, slightly spicy
Cultivation	Indoor or outdoor

This strain is very forgiving. Even if you overwater it or forget to turn on the lights, it will continue to grow. When it is cooler, the buds sometimes take on a dark colour.

Bubble Kush Auto – Royal Queen Seeds

Quick overview

Feature	Details
Type	Feminized Autoflower
Genetics	Bubble Kush × Royal Critical Automatic
Flowering time	8–9 weeks from seeds
Height	70–100 cm
THC	around 16 %
Aroma	Chewing gum, earth, a hint of Kush
Cultivation	Indoor or outdoors

This strain stays small and fits in any small tent. The effect is gentle, good for beginners.

Understanding THC and CBD

When you're looking for seeds, you'll see these two abbreviations everywhere. They determine how the plant will ultimately feel.

THC makes you high. It can put you in a good mood, but too much can quickly be too much, especially at the beginning.
CBD slows things down a bit. It makes you feel calm and clear-headed.

Expert tip:
For your first grow, anything under 15 per cent THC is a good choice. You'll feel it clearly, but it will remain pleasant.

Finding the right balance
A one-to-one ratio between THC and CBD is often just right. Not too strong, not too weak.
If you prefer to stay clear-headed, go for CBD-Sorten.
If you want more of an effect, go for something with more THC.

Many people start with balanced or CBD-heavy strains. Later, when you feel more confident, you can move on to strains like Gelato Auto or Gorilla Glue Auto.

Afew simple tips before you start

1. Start small. Two or three plants are enough.

2. Ensure good air circulation. This prevents mould.

3. Do not water too often. Check first whether the soil is dry.

4. Just observe. Much of it takes care of itself.

Expert tip:
The first round is more about observation than work. You learn how plants react to light, water and rest. That's where understanding begins.

A few thoughts to conclude
Growing indoors brings peace. You learn patience. You realise how important rhythm is. When to water, how it smells, how the plant changes. It's less about yield and more about understanding the process.

If you use feminised Indica autoflower seeds, much of the complicated part disappears. Then it's just a matter of reading the plant. With time, the rest will come naturally.

Expert tip:
Take it easy. Allow air to circulate, keep the soil loose, stick to your rhythm. That's how they grow best.

The first step
Cannapot.com offers a wide range of indoor-seeds. Each variety shows how long it flowers, how tall it grows and how strong its effect is. All seeds from well-known breeders. They are neatly packaged and orders remain private.