10 Autoflowering Cannabis Seeds in UK Best for Outdoor Growing

cannabis seeds outdoor uk

There are a lot of cannabis seeds outdoor UK out there that you can choose from. It is only a matter of taste or preference when it comes to picking a cannabis variant to grow outdoors.

But the question is, what is the best of the best in the world of cannabis growing, specifically in the UK?

Well, to answer that question here are the top 10 best autoflowering cannabis seeds that are great for outdoor growing UK.

Through this write-up, you can choose a cannabis variant that might suit your style. Plus, regardless of what you pick, it is definitely for sure that you will not pick a disappointing one.

But before that, let’s learn first what an autoflowering cannabis seeds are?

What is an Autoflowering Cannabis Seed?

An autoflowering cannabis variant is genetically different from other variants solely because of its growth cycle. Unlike other cannabis plants whose growth is determined on light cycles, autoflowering cannabis plants grow in terms of age. This means that the harvesting time does not take more than a few weeks or so.

This unique feature allows growers of autoflowering cannabis to harvest multiple crops in a single season.

The 10 Autoflowering Cannabis Seeds in the UK Best for Outdoor Growing

Please take note that this list is not a ranking list. All autoflowering cannabis variants are not ranked from 1 to 10. Therefore, the number they are placed in does not coincide with their value.

1. Monster Dwarf Auto

There are a lot of growers that say autoflowering cannabis variants are mostly linked with below-average yields. In some aspects, this is true. Although Monster Dwarf Auto does not adhere to this belief and completely went against that fact.

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Although this variant grows smaller and compact unlike other variants, its yields, on the other hand, are massive in comparison. In terms of potency, Monster Dwarf sets itself at the lower end of the spectrum. This makes it’s high quite subtle, along with the energizing effects that create a clear state of mind and feelings of motivation.

Monster Dwarf Auto grows to tiny sizes, which are about 60–90cm outdoors. These plants grow from seed to harvest in as little as 8–9 weeks, which provides a relatively large yield of up to 80g per plant.

2. The Royal Dwarf

As the name suggests, the Royal Dwarf is a very tiny cannabis variant that is perfect for areas with limited space or where cannabis is not entirely welcome in the neighborhood.

Once rolled up and smoked, the Royal Dwarf variant produces a mild cerebral high and calming body stone.
The Royal Dwarf generally grows to heights of around 60-90cm and can yield anywhere between 30-80g/plant—which is highly dependent on how it is tended to. It only takes 9 weeks before it can be fully ready for harvest.

3. Northern Lights Auto

Northern Lights Auto is a classic that is loved by almost anywhere in the world. It offers an engrossing body stone with a mild high.

This cannabis variant is highly resistant to the cold weather, pests, molds, and are quite durable, making it suitable to grow in the UK.

It goes from seed to harvest in 9 to 10 weeks tops and reaches heights of up to 1.2 meters. It can also yield 200g per plant. That itself screams class on all aspects.

4. Cream Caramel Auto

The Cream Caramel Auto is very sweet and has a pretty strong kick, which makes for a pretty potent experience.

Cream Caramel Auto goes from seed to harvest in just 9 weeks. This variant reaches up to 1 meter in height and can produce yields of up to 100g per plant.

In addition to that, this cannabis variant is one of the low maintenance variants out there. This means that it can grow all by itself without the need of much attention. This is a great autoflowering plant if you are still starting.

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5. Big White Widow Autoflower

Big White Widow auto can achieve a height of up to 180 cm. Another thing is that they produce higher yields and do not depend too much on when transitioning between summer and autumn for it to bloom.
Moreover, the Big White Widow Auto is a very strong and reliable autoflowering seed that is suitable for outdoor growing in the UK.

6. Critical Autoflowering seed

Critical autoflowering has got to be one of the fastest-growing autoflowering cannabis seeds out there. It produces high-quality yields.

It also has a strong genetic background, which is 50% Indica, 30% Sativa, and 20% Ruderalis genes. Critical is a very strong autoflower that has no issues developing in harsh conditions. In short, it is very suitable for the UK climate.

7. Super Silver Haze Autoflowering

Smoking a bowl or blunt using Super Silver Haze will put your mind into a different level of high. It can help you in generating new ideas and formulating creative thoughts quite easily ease. That said, it is perfect for long sessions of studying, writing, or maybe just brainstorming for anything at all.

It has a THC level of 17%, placing it with the upper echelons of potency among its autoflowering spectrum.

Super Silver Haze Autoflowering grows outdoors without any issue because it easily becomes compatible with the soil and under the sun. It grows rather tall, reaching heights of 150cm and can produce yields of 120–170g per plant. You won’t be waiting long to taste these buds either as they’ll be ripe for the picking 70–85 days after planting.

8. Royal AK Automatic

This Indica dominant autoflowering cannabis variant provides flawlessly smooth highs with uplifting sensations. Royal AK Automatic only has a short life cycle of 9-10 weeks, this variant perfectly holds out during cold climates.

It is even quite popular in eastern European countries. It has a potency of 15% THC, which is quite high than most cannabis species. If you are currently living in a region with colder climates, the Royal AK Automatic should be one of the choices for you.

See also  Autoflower VS Regular Seeds: Which one is Better to Grow?

9. Sweet Skunk Autoflower

Sweet Skunk Automatic variant is the result of two very popular marijuana strains that were bred together; these are Critical Domina and Big Devil #2. Their properties were combined seamlessly to ensure that Sweet Skunk Automatic achieved high stability whilst maintaining its predecessor’s qualities.

This hybrid autoflower unites all of the best qualities of Indica, Sativa, and Ruderalis. It rather grows quickly, with harvests that are often expected in just 8 weeks tops. The buds that you harvest are quite sticky and resinous and have subtle traces of fruity smells. These flavors complement the smooth high of Sweet Skunk Automatic very effectively—adding more to the experience.

The size is quite compact, growing only as tall as 60-100cm. If you grow this properly, you can enjoy the bountiful yields that can reach as high as 110g per plant.

10. Pineapple Express Auto

Pineapple Express Auto takes about 10 weeks to grow from seed to harvest. It reaches a height of up to 60cm and can yield anywhere from 20-100g per plant.

It is, in fact, a very popular cannabis variant that has a fruity flavor that almost everyone likes. It has a tantalizing high and soothes the body at the same time.

The only downfall o this one is its size and yield. Unlike Monster Dwarf Auto whose yield is above average, Pineapple Express Auto yields quite a little, which adheres to its size.

But it is like what they say, quality over quantity.


No matter what country you currently live in, even in the cold climate (like in the UK), you can still plant these autoflowering cannabis seeds outdoors as long as the sun is present (and it is perfectly legal to plant these seeds).

If you can’t choose from these 10 autoflowering cannabis seeds, check out the “5 Auto strains that you must grow” article from Alchimia. They are also worth checking out if ever you have not yet decided.

The only challenge left now is choosing one of these best cannabis seeds for outdoor growing UK. And if you want, you plant all of them, one or two variants each season—it’s the best way to go!

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