Growing cannabis outdoors in the Netherlands: A complete month-by-month guide.
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Known for its world-famous coffeeshops, the Netherlands holds the title of one of the best cannabis hotspots in Europe. Some Dutch cannabis growers choose to cultivate indoors under the comfort of grow lights, but many cultivators see great success every year with outdoor harvests. Get to know the Dutch climate and maximise your outdoor returns using the guide below.
GROWING CANNABIS OUTDOORS IN THE NETHERLANDS IN 2021
Situated in the north-west of continental Europe, the Netherlands borders the North Sea. This body of water holds great influence over the environmental conditions in the country, making for a temperate maritime climate.
At close to 42,000km², the Netherlands is amongst the smaller countries in Europe, followed by a relatively long list of microstates such as Luxembourg and Liechtenstein. Because of its small landmass, the entire country experiences a relatively similar climate.
However, some slight variation in weather does occur. High winds impact coastal regions more than inland areas, and the south and south-east regions experience considerably less rain. Frost also impacts different regions at different times of the year, greatly altering the outdoor growing season in different places.
IS WEED LEGAL IN THE NETHERLANDS?
Weed-lovers from all over the Earth make the pilgrimage to smoke buds and gobble edibles in the coffeeshops that line the city streets. However, laws in the country occupy somewhat of a grey area.
The ability to stroll into a shop and buy weed may give many visitors a false sense of tolerance. A strange paradox underpins this experience. Within the country, legislation outlaws growing cannabis, but allows the sale of the herb. Confusing, right?
Coffeeshops can only legally possess up to 500g at one time. Professional growers that supply coffeeshop chains are subject to fines, although rarely receive jail time. Laws are slightly more relaxed in regards to small-scale home growing. The authorities won’t charge growers with less than five plants. However, complex automated growing systems might raise concerns over commercial growing, despite a small number of plants.
The bottom line: Cannabis possession and small-scale growing are decriminalised in the Netherlands, but still illegal. Police will turn a blind eye to people possessing under 5g of the herb, and home growers often fly under the radar and are rarely prosecuted.
JULY
• Day length July 1st: 16h 37m
• AVG temperature: 13–22°C
Can you feel the heat while tanning out in the garden? So can your plants! Keep on top of watering in the mornings and evenings to prevent the soil from drying out.
Continue training your plants, making sure the canopy and all future bud sites remain even and open to sunlight. Open the doors and windows in your greenhouse or polytunnel during the day to vent them out and promote fresh air exchange.
Add fresh worm castings and compost to your beds to provide slow-release nutrients, and a fresh new layer of mulch to combat the ever-emerging weeds. Continue feeding your plants with organic nutrient formulas to promote vigorous growth.
Make some of your companion plants into a refreshing tea and take a stroll around the garden. Look out for curling leaves and discolouration. If you spot these symptoms, learn how to fix them here.
With flowering just around the corner, you’ll now be able to sex your plants. Check the nodes of each plant—the points where the branches and main stem join—for signs of pre-flowers. Female pre-flowers can be identified by the presence of small hairs, whereas males have no hairs and emerge as smooth sacs. Remove any males from the garden immediately as you don’t want them pollinating your females.
AUGUST
• Day length August 1st: 15h 26m
• AVG temperature: 13–22°C
Have you noticed the days getting slightly shorter? Your plants have, too! This signal causes photoperiod plants to start flowering, with the intention to reproduce before the cold weather returns.
Flowering plants possess different nutritional demands compared to their former vegetating selves. Switch to watering your plants with Easy Bloom to provide less nitrogen and higher levels of calcium, magnesium, and potassium. Dress your garden beds with a layer of bone meal, kelp meal, and worm castings.
Start defoliating your plants to expose emerging flowers to more light and improve airflow in the canopy. Keep up a consistent watering routine, especially in the south-east where rainfall might be scarce during this month.
SEPTEMBER
• Day length September 1st: 13h 34m
• AVG temperature: 10–19°C
Your flowers will start forming increasing amounts of trichomes. Your garden will begin to smell, but your handy companion plants will hide the odour from suspicious neighbours and hungry insects.
You’ll need to make an effort to protect your buds against mould and fungal diseases. High levels of moisture throughout the country—around 83% humidity during September—will predispose your flowers to infection. High levels of rain in the north don’t help, either.
Move your potted plants into the greenhouse or polytunnel if you expect long spells of rain. Place tarps over your garden beds if the deluge doesn’t stop. Learn how to identify and treat mould here. Keep up with defoliation efforts to help prevent mould, too.
Fast-flowering varieties will be ready to harvest at the end of September. Restrict all nutrients up to two weeks before harvest to flush the growing medium. Cut these smaller plants at the base and hang them up to dry. Cure them in mason jars and enjoy an early harvest!
OCTOBER
• Day length October 1st: 11h 35m
• AVG temperature: 7–15°C
Say hello to autumn. As temperatures begin to drop and the nights grow longer, indica strains will be ready to harvest around mid-October. Flush the growing medium two weeks prior to your selected harvest date. Dry and cure your bounty and enjoy the soothing and stoning effects of indica genetics.
Longer-flowering sativa varieties will still be maturing at the end of the month. However, the first frost will arrive in the east of the country and some central regions around mid-October. Areas such as Eindhoven, Amersfoort, Enschede, and Almelo can expect the first frost between October 21–31st. Move plants into greenhouses and polytunnels, and wrap pots in bubble wrap if things get extra cold.
NOVEMBER
• Day length November 1st: 9h 36m
• AVG temperature: 4–10°C
The final months of the growing season. Western regions such as Amsterdam, Rotterdam, and Drachten will experience the first frost between November 1st–10th. Ideally, all of your plants will be in a greenhouse at this point. Plants that remain in beds will be a bit of a gamble.
Flush two weeks before harvest, then cut your plants and trim your flowers. Dry and cure your harvest and enjoy the more cerebral effects of your sativa varieties.
With the growing season over, clean out your greenhouses and polytunnels in preparation for next year.
PROS AND CONS OF GROWING CANNABIS OUTDOORS IN THE NETHERLANDS
Growing cannabis outdoors in the Netherlands provides cultivators with consistent, high-quality flowers year after year. Doing so comes with some great advantages, but there are some hurdles to contend with too.
Pros:
• Relaxed decriminalisation laws
• A relatively late frost in the west of the country
• Plenty of rain saves money on water
Cons:
• Harsh winds in coastal regions
• High humidity all over the country
• Potential lack of rain in the south-east
TOP 3 RQS STRAINS RECOMMENDED FOR OUTDOOR GROWING IN THE NETHERLANDS
As one of the most storied plants on Earth, cannabis can survive just about anywhere. However, some strains thrive where others don’t. Check out the three best strains to grow in the Netherlands below.
• Power Flower — Mould is no match for her
Breeders created Power Flower to deal with high humidity. The sativa-dominant lady descends from a hardy South African landrace and delivers an uplifting and stimulating high. Her tall and elegant flowers produce a moreish terpene profile that features hints of citrus, fruit, and pine. Outdoor plants reach a height of 200cm and yield around 500–550g/plant. Expect to harvest during October.
Buy Power Flower
• Somango XL — Hardy and productive
Perfect for the early frosts of the eastern regions, Somango XL offers a speedy and rewarding yield. This indica-dominant strain features a THC level of 18% alongside pleasant fruity terpenes. Enjoy her soothing effect on long summer afternoons and relaxing evenings. She’ll top out at a height of 200cm and provide 550–600g/plant. Prepare to harvest her colas after a flowering time of 8–10 weeks.
Buy Somango XL
• Royal Gorilla Automatic — Great for guerrilla grows
Not every grower enjoys the luxury of a garden. Royal Gorilla Automatic will provide a respectable yield even when cultivated as part of a guerrilla grow. This powerful and fast-growing strain will thrive in a concealed forest opening or meadow, considering you give her basic love and care. Her high-THC buds will be ready for your enjoyment a mere 8–10 weeks after germination. Expect a good yield of 120–170g/plant.
Buy Royal Gorilla Automatic
GROWING WEED IN THE NETHERLANDS: YOU CAN DO IT TOO!
Overall, the Netherlands offers an easy growing season to outdoor cultivators. Consistent rainfall keeps plants hydrated, and the length of the season allows growers to raise large sativa plants if they have a greenhouse or polytunnel installed. As long as you're prepared to defend your flowers against excess moisture, it should be plain sailing! Relaxed laws for small grows are also a bonus!
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