Thank you for the info, it must be frustrating to keep telling the same people you can’t “Blog Answer”. Even when you provide the link to the forum for any questions they have,
Hi cliff uk,
thank you for your comment. For growing questions, I’d like to refer you to the Sensi Forum: http://forum.sensiseeds.com/.
Other things to consider when growing in winter
Some clever growers will use extra lighting during winter only, to ensure that their plants have enough light to grow. While plants will usually not achieve the yields and qualities achieved in more favourable times of the year, there are plenty of smart hobby gardeners out there that will ensure their supply remains steady even in the harshest times of the year by following this principle.
If I start growing 1st day of winter in green house and remove the green house at 1st day of spring . When will I harvest flower . I wanna know if warm weather at april or may harm the flower or not ?
And can I harvest 2times (at may and at September )?
With best wishes
As we have already mentioned above, the best seeds for growing in cold climates or in winter periods are the indica strains, since most of them come from hostile climates such as India or Pakistan, and their genetics come from pure acclimated landraces developed naturally in high mountain climates, where growth in itself is already quite difficult and therefore those landraces have become more resistant to fungal pests and cold along the time.
Why? Because plants that are directly grown directly in the soil are more difficult to give them heat, if the soil is not hot. However, the pot will avoid this problem.
-Grow Indica or hybrid strains: They are the ones that, in general, best adapt to this type of climatology. Later on we’ll give you some tips about choosing the best seeds for this kind of weather, but you can take a look at a longer article already published in PEV Grow previously which is about this topic. Sativa strains are better adapted to tropical climates, and therefore need a lot of light intensity.
The best varieties for cold climates
For a long time and specifically in countries where it is not particularly cold all year round, as is the case in most European countries, a large number of marijuana growers devote to this task in the less hostile months of the year, i. e. those that range from April-May (germination and transplantation of seedlings and cuttings) to September-October (harvest), approximately, which is the time of outdoor harvest. The rest of the year, they devote to enjoying the production and prepare the next harvests.
It’s true that the ideal season to crop the vast majority of cannabis seeds is when it is not particularly cold and the hours of sunshine are abundant (long photoperiod), helping its growth and proper development. However, cold temperatures should not prevent you from growing cannabis all year round. In this post we’ll give you some techniques to achieve it.
-Be careful with the humidity! Although the truth is that during the winter, plagues are less common, humidity can always cause pest problems. We must bear that in mind. We must always use preventive fungicides, especially during the rainy season.
Tips to combat the cold weather
Therefore, if some of the best seeds are provided from these countries to the current cannabis market, is because is really possible to grow cannabis during the cold season, taking into account that many of the genetics which can be found in the seed market, have been progressively adapted to European latitudes.
We also have the option of using a “blanket” for the floor, made of heat-absorbing materials such as a limestone blanket. It is a technique widely used in vineyards, to dampen the temperature differences between day and night. If there is frost, we will prevent the roots from freezing.
Durban Poison is another member of the proven Dutch Passion Dutch outdoor seed collection with high THC levels and robust outdoor performance.
If you’re growing photoperiod feminised cannabis seeds outdoors in a greenhouse you may want to consider greenhouse blackout blinds. These are used by many licensed greenhouse producers in legal grow environments such as the USA.
Growing weed in winter may only be possible in tropical climates. But growing cannabis outdoors in cooler temperate climates requires the right outdoor cannabis seeds combined with a good understanding of the length of the growing season. You will need to maximise your plants exposure to the sun, choose a sunny and sheltered spot perhaps with some protection from the prevailing wind.
Auto Duck is an autoflower seed which performs very well in cold climates with short summers. She takes around 100 days from seed to harvest and is another solid autoflower choice for outdoor growers. One added advantage of Auto Duck is that she grows with a stabilised leaf deformity. This gives her natural stealth, you could walk past an Auto Duck and not realise that it’s cannabis! It’s a useful additional feature to a popular outdoor auto strain. The photoperiod feminised seed version called Frisian Duck is also highly recommended for outdoor growers in cold climates.
Durban Poison feminised (Dutch Outdoor)
Although many consider it relatively easy to grow good quality cannabis indoors, there are some considerations when the weather is cold. If you are growing on a cold concrete floor, the root space of your cannabis plants will quickly find the heat drained from them. This can dramatically slow down growth, affect quality and cause issues with nutrient uptake if temperatures have dipped too low for too long. If your grow room is too cold results will be significantly below expectation and harvest quality may well be disappointing.
If you grow cannabis indoors in cold weather you may wish to consider having the ‘lights on’ period after sunset when ambient temperatures are coldest. This way, the lights-off period happens during your daytime when ambient temperatures are warmest. This helps maintain a more consistent temperature and avoids excessive temperature swings. In turn, this improves plant health and contributes to improvements in harvest quality.
A Dutch loft grower got a nasty surprise when the snow melted on his roof and the neighbours called the police. Indoor growing in cold climates can present certain challenges!
Top 5 strains to grow in cold weather
If you live in a cold climate you need to evaluate the pros and cons of indoor cannabis growing vs outdoor cultivation and then decide which best suits you. To help, we have listed our top 10 tips for growing cannabis in cold climates.
Auto Mazar is a tough and hardy strain, part of the Dutch Passion Afghani Kush cannabis seed collection. Outdoors she takes around 100 days from seed to harvest. She often reaches around 75-100cm in height. If your growing season is very short, even for autoflowers, you can always consider germinating the Auto Mazar seeds indoors and keeping them there for a couple of weeks before placing them outdoors permanently. This way, the plants are protected from the weather/pests while they are at their most vulnerable.