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weed growing kit amsterdam

As you can read in our blog on the various life stages of cannabis, you can draw a basic distinction between three stages in the life of a cannabis plant: germination, vegetation (growth), and flowering. Each of these stages is directed by light, whether indoors or outside. In nature, a freshly germinated seedling first starts to grow as fast as possible to toughen up, with enough leaves to catch the light and firm roots for nutrient absorption. In natural conditions, that happens in spring, when the sun is not yet straight above the equator. As the days get longer, the rays of the sun don’t have their full summer strength yet. Plats ‘sense’ this, so if you get your timing right, your germinated seeds will grow fastest from early May until about mid- or late June. Indoors, you can simulate these springtime conditions all year long by using a ’16/8′ lighting schedule. That means switching on the lights for 16 hours and then switching them off again for eight hours of ‘night’ – similar to outdoor Spring conditions, that is.

Indoor growers need to keep the fresh air (rich in CO2) coming in and old air (rich in O2) going out. This requires an extractor fan with carbon filter for the smell, fans for air circulation and a fresh air inlet in a closed-off growing environment. This is also where growing outside saves you a lot of trouble.

How Light Directs The Growth Of Cannabis: Vegetative Stage And Spring Sunshine

On June 21, the Northern Hemisphere enjoys the longest day of the year. After this ‘summer solstice’, the days gradually get shorter as we (sadly) start to prepare for autumn. Rather than growing even taller, cannabis plants now enter the flowering stage. This is when female plants start to develop the flowers growers love to harvest. How long a given strain flowers before she’s ready to harvest depends on the individual strain. Still, in temperate climate zones such as those of Northern Europe, it’s important to finish flowering before the cold and wet autumn weather sets in; preferably before October arrives. This explains why May is the perfect time to get your germinated seedlings out into the spring sunshine.

Ready – Steady – Grow!

Once you receive your seeds and activate them through germination, the first element your cannabis seedling needs to survive is light. Just like regular plants, weed needs light for photosynthesis in order to grow. And no, that does not necessarily have to be artificial lighting in an indoor grow house. Sure, you can build an indoor grow room, grow tent, or even a small cabinet with artificial lighting. But why should you? The sun is shining outside, so why not use that natural solar power to fuel your weed plants? Depending on your local climate conditions, spring and summer are the perfect time to get a natural grow running. It’s free, it’s sustainable, and it’s a great excuse to get out more often.

We sell different Feminized seeds for Indoors and Outdoors. Click to see our Feminized Seeds

We sell different seeds for medical purposes. Click to see our selection of Medical Seeds

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Everyone loves Free Cannabis Seeds, find out more about our Free Cannabis seeds

We sell different Outdoors seeds for all kinds of climate. Click to see our Outdoor Seeds

Before choosing your type, take a look at this information about Marijuana Seeds and Cannabis Seeds. Amsterdam Seed Supply has the best Feminized, Autoflowering and Medical Marijuana seeds available in Amsterdam. Each marijuana seed has their own specifications and are grown for different purposes. Please read the specifications of each seed before placing your order at Amsterdam Seed Supply and start growing.

Amsterdam Seed Supply has experience with the best marijuana seeds available. Below is a selection of some of our favourite cannabis seeds and books.

The Royal Queen Seeds Store is truly a must-see stop for seed buyers from all over the world. If you happen to be in the area, stop by for a visit and to chat with the qualified salespeople, one of whom speaks five languages! The European Seed Bank is not only the easiest seed shop to find in all Amsterdam. it is also definitely the most affordable.

The Royal Queen Seeds Store assortment also includes seeds from the most renowned and appreciated Dutch brands, such as Sensi Seeds, Serious Seeds, High Quality Seeds, Black Label, Paradise Seeds and, of course, Dutch Passion. The shop has also decided to add a couple of excellent international colleagues to its selection, which means that Kannabia seeds (Spain) and the special Joint Doctor autoflowering Lowryders (also feminized!) from Italy are now available.

The Royal Queen Seeds Store opened in the heart of Amsterdam a few years ago – a small but highly-specialised shop that has been full ever since it opened, not just because of its excellent location but also thanks to the varied and high-quality product assortment, not to mention its affordable prices. Having seen thousands of visitors and foreign tourists pass through its doors, the Royal Queen Seeds Store has become a point of reference for growers from all over Europe.


We are welcoming the second Royal Queen Store to Amsterdam, a brand store to be precise. If you want to lift yourself into Royal Queen’s heaven where everything for the hobbyist grower is provided, you should definitely visit our store on the Haarlemmerstraat in Amsterdam. You will find everything from seeds, vaporizers, grinders, bongs and the best advice from our well-informed employees.

As an extra service for the shop’s many customers, the Royal Queen Seeds Store has now decided to start selling its entire assortment online, as well. The easy-to-use website presents all the products available in the shop for online sales.

The shop’s menu is perfect for its international vision. Due to their ever-growing popularity, feminized seeds are the most frequent item on the menu. Royal Queen Seeds, the shop’s own brand of seeds, are the most important and convenient on the market. You will, of course, also find well-known varieties such as White Widow and Northern Lights, but also the Spanish success, Critical, or the more traditional Dutch Amnesia Haze.

All our seeds are grown, improved, stabilized and feminized by the expert Spanish growers who work exclusively for Royal Queen Seeds!