When does the cannabis growing season start? Best time to start (2026)
The program cannabis growing season is just around the corner again. For many growers, this is the moment to start preparing. The days are getting longer, the temperature is rising, and conditions are improving for a strong start.
But when exactly do you start? And do you choose indoor or outdoor growing? In this guide, we explain it simply.
When does the cannabis growing season begin?
In Europe, the cannabis growing season usually starts in the spring. Most growers start between March and May.
- March to April: preparation and germination
- April to May: first growth phase
- Summer: full growth and development
- September to October: harvest
The key is temperature. As soon as the nights are less cold and the sun's intensity increases, plants can really grow well outdoors.
Growing outdoors: natural and seasonal
Growing outdoors follows the rhythm of nature. Therefore, timing is especially important here.
The best time to start outdoors is around April or May. In warmer countries like Spain, this can be done earlier, while in Northern Europe you often wait a little longer.
How long does growing outdoors take?
On average, an outdoor grow takes:
- Autoflowers: 8 to 12 weeks
- Feminized plants: 5 to 7 months
Feminized plants grow taller and get bigger. Autoflowers finish faster and are easier to schedule.
Indoor growing: possible all year round
When growing indoors, you determine the growing season yourself. You are therefore not dependent on the weather.
You work with fixed lighting schedules:
- Growth phase: 18 hours of light
- Flowering phase: 12 hours of light
This allows you to have multiple harvests per year. This makes indoor growing interesting if you want control and are looking for faster results.
How long does indoor growing take?
An average indoor grow takes:
- 8 to 12 weeks for fast-growing varieties
- 10 to 16 weeks for larger plants
The right start: seeds make the difference
A good crop starts with strong genetics. That is why many growers choose reliable seeds from well-known breeders.
At Cannabiskwekershuis you see that Royal Queen Seeds is one of the most chosen options. These seeds are known for stable quality and good results in the European climate.
You have a choice of:
- Autoflower seeds for speed and convenience
- Feminized seeds for maximum yield
New collaborations attract a lot of attention every season. Think of special releases and collabs that are popular with growers who want to try something different.
iGrowcan: getting started without experience
Want to make it even easier? Then the iGrowcan is a good option.
This is a complete growing system in one can. The seeds, soil, and nutrients are already included. You only need to water.
Many iGrowcans contain genetics from well-known lines such as those of Royal Queen Seeds. This gives you a reliable foundation without a complicated setup.
In addition, there have been special editions and collaborations, making this an interesting choice for both beginners and experienced growers.
What do you need to get started?
To get the cannabis growing season off to a good start, you need a few basics:
- High-quality seeds or an iGrowcan
- Good soil and nutrition
- A place with sufficient light
- Patience and consistency
With this foundation, you will already get far. You will learn the rest naturally during the process.
Why starting now is smart
By starting now, you get the most out of the season. Your plants receive more hours of sunshine and grow stronger.
Those who start too late miss out on growing time. This is often reflected in smaller yields.
That is why experienced growers always start preparing on time.
Last tip
The program cannabis growing season It is not just about timing, but also about choices. The right seeds, a good start, and simple planning make the difference.
Do you want to make it easy for yourself? Start small, choose a strong strain or an iGrowcan, and build it up step by step.
This is how you get the most out of this growing season.
