Outdoor cannabis strains that handle cold spring nights like champs

Most experienced outdoor cannabis growers have a good idea of when their outdoor grow seasons starts and ends. But sometimes cold spring weather can arrive unexpectedly giving your young plants an extra challenge to cope with.
That’s why it’s a wise idea to buy cannabis seeds that are naturally adapted to be able to cope with cooler conditions. Here are Dutch Passion’s top outdoor cannabis seed varieties for growers that need plants able to cope with occasional cold spring nights.
Optimal temperature for outdoor cannabis
Indoor growers typically grow at around 24ºC/75F with lights on and a couple of degrees cooler when the lights are off. Outdoor growers usually time their grow to avoid the cold spring nights completely. But sometimes unexpected cold weather can hit meaning that your plants may have to deal with temperatures that are little more than 5-6ºC/41-43F.
Such cold nights, especially if the days are warm, creates a challenge that many strains will fail to survive. Temperature swings of around 20ºC/68F between night and day can be too much for many strains to deal with. However, the best outdoor strains have been selectively bred by expert breeders over several generations to achieve their outdoor resilience.
Strains that can withstand sharp day / night temperature differences
Experienced seed banks should know their best strains for outdoor growth. Within that selection they should also know which of their outdoor marijuana seed varieties have the greatest tolerance to wide day/night temperature differentials. These are the strains that are most likely to survive unexpected cold spring nights:
Passion #1 - powerful outdoor cannabis strain with heavy yields
Passion #1 is an outdoor feminised seed variety that was created from 1970’s California Indica genetics and has been fully adapted to outdoor growing in The Netherlands since the 1980’s. She is usually ready for harvest in the northern hemisphere during September or early October (March/April in southern hemisphere) with good cold weather resistance. She has a fresh tart aroma of lemon, lime and spicy notes. THC levels can reach as high as 20%. Highly recommended!
Snow Bud - stabilised, professionally bred for high altitude & cold
Snow Bud is a tough outdoor photoperiod feminised seed variety created by selective breeding of Afghani x South African genetics over several years at high altitude in the Swiss Alps.
Each year, only the best offspring were crossed. This process of selective breeding created high altitude performance that is genetically superior to non-adapted strains. As part of the high-altitude acclimatisation Snow Bud genetics are naturally tougher in cold conditions.
Highly recommended to growers who may have to deal with unexpected cold conditions. During the same Swiss Alps breeding project one other cold-resistant high-altitude strain also emerged, Pamir Gold…
Pamir Gold - selectively bred to withstand cold nights & thin air
Pamir Gold uses Western Himalayan genetics that were selectively bred over several years in the Swiss Alps. Available in photoperiod feminised cannabis seeds she is an indica dominant hybrid a sweet, sour and earthy taste. Yields are heavy and the terpy buds hit hard. As with Snow Bud, above, the selective breeding used ensures extra levels of resistance to cold.
Auto Euforia - as tough as outdoor autoflower seed varieties get!
Auto Euforia is perhaps Dutch Passion’s most durable autoflower seed variety for outdoor growers. She uses tough, fully proven Skunk genetics to ensure an easy grow experience and top-shelf buds with THC levels around 20%.
Grown successfully by outdoor ganja growers as far north as UK/Scandinavia Auto Euforia is your top auto choice if growing outdoors in demanding and cool conditions.
Auto Blueberry - connoisseur quality with inherent resilience
Auto Blueberry is a classic strain, based on the legendary classic you can expect powerful buds with deep rich aromas of dark forest fruit. AutoBlueberry has a stimulating but peaceful vibe with great anti-anxiety effects. She is also noted for having extra resilience to the occasional cold spring night too. If you want some connoisseur-quality buds, Auto Blueberry is a top choice.
Bonus pick - Auto Northern Dragon Fuel from Super Sativa Seed Club
Fans of Dutch Passion’s sister company, The Super Sativa Seed Club (‘SSSC’) will find Auto Northern Dragon Fuel to be a very capable outdoor performer. She produces large indica auto plants with mixed Afghani/Northern Lights parentage. She is an indica auto variety which takes around 10-11 weeks to complete her growth cycle. High THC and capable of withstanding some cold spring nights without problems.
Final thoughts and bonus tips
Growing outdoor cannabis is easy with the right weed seeds. Choose them wisely and spend some time researching your local climate so that you know, in an average year, when the last frost dates are likely to be. The following tips may be useful.
Autoflower seeds are especially recommended to growers who struggle with short grow seasons that are prone to late spring frosts. Northern European/North American growers that can see May frosts often prefer to use more autoflower seeds than feminised seeds. The short 3-month autoflower life cycle allows the grower to avoid cold spring weather completely and grow only in the warmest 3-month period.
Germinate weed seeds indoors and grow them indoors under LED. This allows your plants to thrive in optimised conditions, protected from the variable spring weather.
Use of cloches for outdoor seedlings can be the difference between survival or not on the coldest nights. A cloche is usually a small protective ‘mini greenhouse’ made from glass (or plastic). They create a warm grow environment that retains some of the heat overnight, protecting your seedlings from the worst of the cold.