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Growing cannabis seeds outdoors uk

How to grow cannabis outdoors in the UK

Can you grow cannabis outside in the uk? Yes you can. But growers in different parts of the UK face different challenges. A grower in the far north will face completely different challenges to a south coast grower. Some growers will be able to grow feminised outdoor seeds, whereas others will need to focus more on autoflower seeds. Dates of the last spring frost and the first winter frost vary from region to region, you will need to know yours. Local insect pests and threats from grazing animals also vary around the country. This practical guide explains how to grow cannabis in the UK and explains the month by month timeline for outdoor cannabis growers in the UK, boosting your chances of a successful harvest

What’s the legal status of growing cannabis in the UK?

Is it legal to grow cannabis in the UK? Cannabis is still regarded as a Category B drug in the UK, meaning it is illegal to grow, use or possess for recreational purposes. However in November 2018, UK Home Secretary Sajid Javid announced that cannabis would be legal for medical patients with an “exceptional clinical need”.

Since that point, however, only a handful of patients have been able to secure NHS prescriptions for medical cannabis. Private prescriptions can be made but these are too expensive for most people.

UK recreational and medical cannabis users are largely fatigued with the slow rate of change for UK laws compared to other countries in Europe and around the world. As a result, many UK cannabis users simply ignore the law and grow their own cannabis. A few well grown outdoor plants could provide a years worth of cannabis…

Which of these four types of climate do you live in?

The UK has a temperate oceanic climate, occupying mid-Atlantic latitudes from 49° to 61°N in western Europe. The close path of the jet stream ensures that the weather is changeable. The average annual rainfall is around 1.4 metres with around 130 rainy days each year. On the other hand, there are around 1500 hours of sun per year across the UK, thats around 4 hours per day on average. But which of the 4 main UK regions do you live in?

  • South East: The South Eastern part of the UK can have cold, sharp winters, But summers can be sunny, dry and pleasant with plenty of warmth. Sometimes warm air masses from continental Europe can keep summers dry with occasional heat waves and 30ºC temperatures. Summers can also be grey and cool! South-east UK encompasses Norwich, Cambridge, Portsmouth and of course London. Growers in the South East find it possible to grow a wider range of feminised seeds than growers in Northern England.
  • South-West: The South Western area of the UK often sees mild but wet winters. Summers are often warm but with plenty of Atlantic weather blowing in cloud and rain.The mild conditions allow a longer growing season than in possible in more northern regions. Includes South Wales, Cardiff, Exeter, Cornwall, Plymouth, Southern Wales etc. Just like South-East UK, growers in the South West will also find it possible to grow a wider range of later-finishing outdoor feminised strains than growers in northern England or Scotland.
  • North-west: Cannabis growers in the north-west experience cool winters and summers which tend to be cooler and greyer than those further south. Prevailing Atlantic winds can bring rain and wind pretty much all year round. The North-Western region includes areas such as Northern Ireland, Northern Wales, and Western Scotland as well as areas like Greater Manchester, Merseyside etc. Growers in this region may find late season weather in September and October less friendly for growing slower blooming outdoor strains. Growers need to be selective about the feminised outdoor strains but will get good results with autoflower seeds.
  • North East: Just like the North West, growers need to be mindful of climate limitations and the shorter grower season compared to growers in the warmer south. Winters can be cold, spring can be slow to arrive and the summer isn’t always as long as locals would like. Some outdoor feminised strains can be grown such as the tough Frisian Dew. But many outdoor growers also rely on autoflowers which can deliver guaranteed harvests even in shorter Scottish summers. The North East includes areas such as Yorkshire, Tyneside, Northumberland and Scotland.

What does your cannabis grow calendar look like?

It’s difficult to give precise guidelines for every city and grow location in the UK. But by generalising around the four main regions you may be able to get a rough idea of your local challenges. It may help you to conduct some internet research on weather specifics for your grow location, such as typical last frost dates in Spring etc.

What’s the best soil to grow cannabis in UK? If your local soil type is too poor (e.g. too sandy) then simply supplement it with supermarket soil and some grow additives – fish/blood/bone meal, rotted manure, worm castings, seaweed etc.

January/February

Many UK outdoor growers ignore January and February. But the good long reaching views and lack of leaves on trees, undergrowth and bushes can make this a great time to go scouting for possible future grow locations.

A winter walk along the river banks, through the fields and in the countryside can reveal promising future guerrilla grow locations which could be adapted to grow cannabis, UK winters have their uses!

One other useful activity at this time of year is the chance to dig the ground thoroughly. This allows you to remove any big roots, stones etc from the ground and it aerates the soil. You can also take the opportunity to dig in some well rotted manure, supermarket soil or soil improvers/fertilisers into the soil.

March
Day length March 1st: 11 hours
Average temperature: 3–10°C

March is often a time of excitement and anticipation for UK guerrilla growers. When growing cannabis, UK growers often want to germinate their seeds as early as possible.

It’s not unknown for the UK to have some great sunny and warm spring weather in March. This can lull UK growers into a false sense of optimism and cannabis seeds may be germinated a few weeks too early to be planted outdoors. Usually the time is better spent preparing your outdoor grow locations. Remember, several guerrilla grow plots are often preferred just in case you have bad luck at one of them. ‘Rippers’ (grow thieves) are a common threat, as are the nuisance of dog walkers and ramblers stumbling upon your grow.

Preparing the soil in your plot is one of the typical March activities. You may want to remove weeds and add some soil, compost or well rotted manure. If you add fresh manure, do it at the end of the previous growing season so it has time to be broken down by the soil over winter (otherwise it could burn the roots of your seedlings)

Greenhouse cannabis growers often use March to conduct a thorough greenhouse clean. Perhaps with a power washer to ensure the greenhouse is spotless. Clean the glass and remove debris to make it as clean as you can.

If you are lucky enough to be growing in areas like the Channel Islands you may want to germinate your cannabis seeds and consider an early start. But for most of the rest of the UK, it’s still a little too early to be germinating your cannabis seeds. However, if you have an indoor area to germinate your cannabis seeds and grow them under artificial lights, then this could be the time to get going. By germinating your feminised seeds (or autoflower seeds) early you give the seeds a head start and should have larger plants with heavier final yields.

But remember that you may not be planting your seedlings outdoors until May (or perhaps April in a greenhouse) so don’t rush and germinate your seeds too early at the first sign of a sunny day.

April
Day length April 1st: 13 hours
Average temperature: 5–13°C

April often heralds the start of Spring for many in the UK. Mini heatwaves in April are not unknown, though over-ambitious outdoor growers should note that snow fall and frosts are still commonplace for several weeks to come. Spring flowers are making the most of the longer daylight hours and warmer daily maximum temperatures.

Some growers, especially those in warmer southern regions, may be tempted to reach for their cannabis seed stash and germinate some seeds. Realistically however, most growers won’t want to risk putting their seedlings outdoors in April weather with the possibility of wintery showers always present. Instead, growers often keep their seedlings indoors (or in heated greenhouses/poly-tunnels) for a few weeks until the threat of bad weather has fully passed.

When growing cannabis, UK outdoor growers may also want companion plants nearby. These tend to attract helpful insects and deter pests. Peppermint, yarrow, coriander, and marigold may help in this respect.

May
Day length May 1st: 15 hours
Average temperature: 8–16°C

Warmer southern regions as well as coastal areas often see their last frost in early May. Further north, you may have to wait a few weeks longer before considering putting your plants outdoors. May is the month when many UK growers like to get their cannabis plants outside.

See also  Germinating autoflowering cannabis seeds

Your plants may have been indoors under artificial lights for several weeks. Allow them to gradually acclimatise to outdoor temperatures for a few hours each day. When you do plant them outside, you can place the plants directly in the earth or leave them in containers. When rooted directly in the soil the roots will have unlimited growth space and this can allow large plants 2-3m tall. Or you can leave the plants in containers, but this will mean you have to ensure sufficient water. Plants in containers can be moved in emergencies, even if they don’t produce quite the same large monster plants that can grow when rooted directly in the earth.

Hot weather is also possible in May, so greenhouse growers may want to ensure sufficient ventilation. Final plant health is heavily dependent on the soil and nutrition which you provide. If you can ensure a healthy living soil, perhaps with added mycorrhizal fungi and beneficial bacteria the plants will benefit.

Some growers, with an eye to the future, will consider a light top soil dressing of worm castings, compost, compost tea or seaweed just to ensure that future nutritional needs are met. Others will add some slow release organic nutrients such as BioTabs to the soil to ensure healthy future growth. You may also wish to get some less hardy companion plants such as Chamomile going to help deter pests later in the year.

Once your outdoor plants are in position, you should protect them. Some growers use chicken-wire (garden wire mesh fencing) around their plants to protect them from deer, rabbits etc. You can use tent pegs to pin down the fencing and stop rabbits getting underneath. The most determined UK cannabis growers will also plant a perimeter of thorny brambles around their plots to deter grazing animals, dog walkers, hikers etc.

For many growing cannabis, UK slugs and snails are a massive pest. Slug/snail pellets are often repeatedly applied around the plants in generous quantities to prevent your plants being decimated by them.

June
Day length June 1st: 16.5 hours
Average temperature: 11–19°C

The threat of frost has gone (apart from some Scottish areas) and summer has arrived. With long days, your plants should establish themselves and start to thrive.

Occasionally June can be very hot. You may need to check rainfall locally and for the next 2-3 months consider transporting water to your plants in the unlikely event of a persistent drought.

Be sure to remove any weeds and don’t be afraid to chop down surrounding vegetation which threatens to rob your plants of valuable sunlight. Re-applying a layer of mulch can deter weeds from getting established and it doesn’t harm to reapply slug/snail pellets.

Those growing cannabis in the UK may also consider LST (low stress training) for tying down particularly tall plants. June is a good time to start, before the plants get too large to easily manipulate.

July
Day length July 1st: 16.5 hours
Average temperature: 13–22°C

Growing cannabis in the UK is great fun in July. Warm sunny weather is in plentiful supply and you may want to keep an eye on rainfall. Usually UK rain is never far away, even in July, but in drought you may need to transport water to your plants if there has been a few dry weeks. The long sunny days are ideal for cannabis. Growth above and below ground is in full flow.

Greenhouse cannabis growers may see 30ºC temperatures. Ensuring sufficient water is vital. Check for signs of pest infestation and also check for nutrient deficiencies. If you are growing in good quality, moist, nutritious soil then you shouldn’t see any issues. But it never does any harm to continually monitor the health of your plants.

One useful tip for those growing cannabis in the UK countryside is to avoid making a clear and obvious track to your plant location. This may simply encourage curious walkers to wonder why a new trail has emerged. Instead, it can be wiser to visit your outdoor grow location only when necessary. If possible, you may also wish to have different approach routes to your grow location to minimise the chance of creating an obvious pathway.

Some outdoor growers like to try to control surrounding vegetation throughout the summer. In particular they like to stop nearby trees and bushes from taking sunlight from their cannabis plants. Outdoor pests such as aphids, whitefly etc can be a nuisance though they can be tackled with traditional methods as well as predatory insects (ladybirds etc).

If you had good weather and planted your autoflower seeds early enough, you may be able to harvest your first autos in July.

August
Day length August 1st: 15.5 hours
Average temperature: 13–21°C

As August progresses, daylight hours and temperatures start to drop. The cannabis plant senses the reducing daylight hours and you may notice your photoperiod feminised plants are in bloom.

Autoflower plants are often ready to harvest around August. Many autoflower growers feel that they get particularly potent harvests since their buds are able to ripen under full summer sunlight.

Many that grow cannabis outdoors in the UK have found autoflower seeds are a great way to complement their normal photoperiod crop. What’s more, the autoflower harvest is much more likely to succeed since the mid summer weather is significantly more reliable than the weather in late September or early October.

Many that grow cannabis in the UK like to add extra nutrition in August to allow for a healthy bloom process. Seaweed fertilisers are popular, so is fish/blood/bone meal, worm castings etc. But if your soil is good quality it may not be absolutely necessary to add extra nutrients.

Humidity can be an issue when buds are starting to develop, but there is little that you can easily do to control it. Just ensure that you are selecting good quality outdoor cannabis seeds with reasonable resistance to mold. It also helps to select grow sites that have plenty of direct sunlight, especially early in the day. This helps drive away excess moisture from the plants and minimise mold/bud rot issues.

September
Day length September 1st: 13.5 hours
Average temperature: 11–18°C

Especially in the north, wet and windy weather is already becoming more and more common place. Many that grow cannabis in the UK find September and October to be the most critical months.

A few weeks of good weather at this time of the year can be the difference between success and failure for crops of outdoor feminised photoperiod strains. Most autoflower strains have already been harvested, but photoperiod outdoor strains will still be building their terpene profile and fattening up the buds.

Some southern growers will be able to harvest their photoperiod plants in September. Northern growers may need to wait a few more nervous weeks and hope the October weather stays good enough.

October
Day length October 1st: 11.5 hours
Average temperature: 8–14°C

October usually marks the end of the growing season unless the country has got lucky with a rare ‘Indian summer’ (which means a particularly warm Autumn/Fall). October weather is often cold, wet and windy.

Hopefully you didn’t choose any late blooming Haze genetics! Most growers like to get the plants harvested during October before the weather really goes downhill.

Growers in Scotland and the far north will be mindful of the first winter frosts arriving. Mold and bud rot are a constant threat and there are no guarantees of successful harvests at this late stage in the season. Strain selection is particularly important for outdoor growers in countries with UK-like weather.

If outdoor photoperiod feminised seeds are simply too risky in your specific climate then consider focussing more on autoflower seeds. In the UK, most autoflower seeds grow from seed to harvest outdoors in around 100-110 days. This is slower than indoor auto growing due to the weather, temperatures and reduced light hours. Autoflower seeds also tend to remain around a metre tall, making them easier to hide than some of the 3m tall photoperiod strains.

November
Day length November 1st: 9 hours
Average temperature 4-10ºC

If you get lucky with a warm dry autumn in Southern UK you may still be able to harvest some late blooming plants. Of course there are no weather guarantees so late in the UK outdoor season.

But if the weather hasn’t deteriorated too much, and perhaps with the aid of some shelter (e.g. a glass roof) it may be possible for some lucky southern UK growers to harvest something.

Failing that, November could be a month to tidy up your outdoor grow locations for the following year. You may want to dig in some manure ready for the following grow season

December
Day length December 1st: 8 hours
Average temperature: 2-7ºC

December is a good month to go scouting for possible new grow plots. The lack of vegetation and leaves make it easier to survey the landscape for possible secure grow locations. It’s also a great month to kick back, relax and enjoy the harvest which should be nicely dried and cured!

Growing photoperiod vs autoflower cannabis in the UK

Cannabis seeds that grow in uk climate need to finish inside the short growing season. One of the main challenges for those growing cannabis in the UK is selecting strains that will finish in time. If you want to grow cannabis outdoors, UK growers can choose between autoflower seeds and photoperiod feminised cannabis seeds.

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How to grow autoflowering cannabis in UK? Autoflower seeds have a faster growth cycle and they remain shorter (around 1m tall) than photoperiod feminised strains. But autoflower seeds also tend to yield a little less, which is natural since they have a shorter growing cycle.

Photoperiod feminised seeds tend to take 5-6 months to complete their outdoor grow cycle. This means that you may not be harvesting until the changeable October weather arrives. But you will often have larger plants and heavier harvests.

The shorter your grow season, the more that autoflower seeds will appeal. Many outdoor cannabis growers in the UK have several grow locations and use a mix of autoflower seeds and feminised seeds. Some northern growers prefer to avoid the risk and worry of photoperiod feminised seeds and grow autoflower seeds instead. Often they will have staggered start dates for their auto plants so they are harvesting gradually throughout the summer.

Many UK outdoor cannabis growers will germinate their cannabis seeds indoors and give them the first few weeks under artificial indoor light, e.g. 18-20 hours per day. They do this regardless of whether the seeds are autoflower seeds or feminised seeds. By giving the seedlings indoor light for the first few weeks the plants get the best possible start and avoid the threats of outdoor weather/pests while they are at their most vulnerable.

How many cannabis plants can i grow in UK?

How many cannabis plants can i grow in UK? Unless you have a licence to grow cannabis in the UK, then you can’t legally grow any. Grow your own cannabis in the UK and you are in breach of the law.

However, if you are growing a few plants outdoors the Police are unlikely to ever be able to link plants to any specific grower. They don’t have the resources for 24 hour surveillance for a small plot of autoflower plants.

Most outdoor growers don’t worry about the legal aspects of growing.

What are the best cannabis seeds for the UK climate?

How to grow cannabis outdoors in the UK? You will need good local knowledge of your climate, first frost dates etc. It also helps if you have some prior knowledge of which strains will grow well at your latitude/location. In climates like the South East and South West you should be able to grow photoperiod strains like Frisian Dew and perhaps other strains too.

Some, but not all, of the Dutch Passion outdoor seed collection can be grow in the UK. But much depends on the specific climate in your region. A lot also depends on the specific year you choose to grow in. Some years (admittedly not many of them) have long warm autumns which will allow growers in Northern regions to grow a selection of outdoor feminised strains such as Frisian Dew, Hollands Hope, Durban Poison, Shaman, Passion #1.

But the UK weather is so changeable that you may be able to finish blooming a particular strain one year but not the next. UK cannabis growers simply can’t rely on the weather in the way that growers in warmer countries can. That’s also the same reason why cannabis seed companies just can’t guarantee results from their strains.

That’s why growing autoflower seeds has become so popular with UK growers. The seeds should always finish in time. Yields from autos may be smaller (than photoperiod strains) but the plants are fast and easy to grow. They also tend to remain short and bushy – ideal for hiding behind bushes, nettles and plant life.

The following strain suggestions may be useful for UK growers:

Frisian Dew. A solid, proven photoperiod feminised outdoor strain which grows well in UK conditions. She is usually ready to harvest in early October. Grows well as far north as Northern England. Can finish bloom further north in mild autumns. One of the preferred and most recommended strains for growing cannabis in UK.

Durban Poison. Perhaps better suited to South East and South West regions in order to finish in time. This is another proven outdoor photoperiod feminised strain which grows well outdoors. Durban Poison seeds are part of the Dutch Outdoor seed collection. This is well worth browsing, all the strains in this collection grow well at Dutch (and similar) latitudes.

Frisian Duck. With the unique leaf shape Frisian Duck seeds are ideal for outdoor growers wanting a stealthy, self-camouflaging photoperiod feminised outdoor strain. Also available in autoflower seeds as Auto Duck.

Auto Mazar. This tough and resilient auto grows well in UK conditions. Outdoors she takes around 100-110 days to finish and grows well throughout the UK. It’s worth adding that any of the Dutch Passion autoflower seeds collection should be able to grow and finish inside even a short northern UK summer.

Auto Banana Blaze. This tough Afghani Kush autoflower seed produces heavy harvests with a unique sweet banana taste. Give her a good summer and she can really deliver heavy harvests. A solid and reliable autoflower for growing cannabis in the UK. Part of the Afghani Kush seed collection.

Growing cannabis in the UK really is easy

The diverse, changeable and unpredictable weather can mean that no two UK grow seasons are exactly the same. That can make it difficult to have a preferred strain which will always deliver, year in year out.

Understanding the limits of the grow season at various UK latitudes and locations is your starting point. From there, you should be able to grow autoflower seeds outdoors no matter where you are in the UK.

Many in more southerly locations will also be able to finish blooming photoperiod feminised outdoor strains too, though there are no guarantees particularly north of the Scottish border. Whatever you choose to grow, good luck and choose your cannabis seeds wisely!

Top 10 best outdoor cannabis seeds UK

The UK, despite being at the northern European boundary of cannabis cultivation territory, has thousands of successful outdoor cannabis growers. You can grow both autoflower seeds as well as photoperiod outdoor strains in the UK and expect solid results with the right seeds. One of your main challenges, depending on your precise grow location within the UK, is selecting strains which will finish in time and give high potency results.

This Dutch Passion guide to the 10 best outdoor cannabis seeds for the UK will also offer some useful tips and tricks to maximise your chances of a successful harvest.

Cannabis growing climate in the UK

An outdoor cannabis grower on the English south coast will face a different set of challenges to a grower in Scotland. The UK has a variable and an unpredictable climate. Some growers will be able to fully bloom a photoperiod outdoor strain such as Frisian Dew, whereas guerrilla growers further north may be better advised to stick to autoflower strains which are faster to finish and perhaps more likely to deliver a harvest.

Conditions, temperatures and light hours vary from one UK location to the next. The following table gives an approximate guide to the environment facing many UK growers through the summer months. Note that these are just approximate averages, each UK growing season can show surprising levels of variation from year to year and also from region to region. This presents some genuine challenges to UK outdoor growers.

Month Max. temperature C°(F°) Min. Temperature C°(F°) Sunlight Rel. Humidity
June 19 (66) 10 (50) 16hs 75%
Jul 20 (68) 12 (54) 16:30hs 69%
Aug 20 (68) 11 (52) 16hs 72%
Sep 17 (63) 9.5 (49) 14hs 76%

On top of the regional environmental variations are the normal climatic variations. Some years can produce great growing conditions with long, sunny autumns (fall).

Other years can see the UK summer replaced with a few months of cold, damp and overcast conditions. That’s why many UK outdoor cannabis growers opt for a mix of fast-finishing autoflower seeds as well as some dependable photoperiod outdoor strains. The autoflower seeds should provide a mid summer harvest even if the late-season autumn/fall weather is bad and compromises your photoperiod harvest.

One other consideration is the last frost date. Many UK growers germinate their cannabis seeds indoors and give them a few weeks of indoor light (with e.g. an 18/6 or 24/0 light schedule). The seedlings should only be planted out after the last frost date for your location. With the benefit of indoor protection during their most vulnerable first few weeks, these plants should go onto deliver good growth and harvests.

Best outdoor autoflower cannabis seeds UK

The Dutch Passion autoflower seed collection are all great options for UK outdoor growers. They will often grow from seed to harvest in UK conditions in around 100 days, possibly a little faster in warm and sunny conditions. With the benefit of some planning and perhaps the use of greenhouses, you may be able to get two successive outdoor autoflower crops in one season if the weather is kind.

Many UK auto growers germinate their seeds in May and grow them indoors for a couple of weeks before planting out after the last frost. This allows mid summer harvests.

Even growers in the far north of the UK should be able to get an autoflower harvest if they grow in their warmest and sunniest 3-month period.

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Giving the seeds a week or two of indoor growth after germination is always a good way of giving your plants a head start. All the Dutch Passion autoflower seeds would be good choices for an outdoor cannabis grower, but the following 5 strains are particularly recommended and produce great results for outdoor growers.

Auto Mazar

Auto Mazar is a tough and dependable autoflower strain using hardy genetics. She is part of the Afghani Kush cannabis seed collection. Auto Mazar typically grows into short, stocky cannabis plants with numerous side branches. Yields are heavy with a supremely enjoyable high and a rich hashy taste.

As with all outdoor strains, giving the plant the benefit of a couple of weeks of indoor growth after germination helps them become better prepared for eventual outdoor life. Gradually acclimatise your outdoor plants for increasing periods of time before eventually planting them out after the last frost.

Auto Mazar grows well outdoors across the UK. Choose a sunny grow location and where necessary offer some protection from the prevailing wind if planted in an exposed location.

Auto Ultimate

Any UK outdoor autoflower grower wanting the heaviest possible yields should look no further than Auto Ultimate. This is one of Dutch Passion’s undisputed heavyweight yielders. The genetics can take a week or two longer than other autoflower strains but repay the grower with unusually heavy harvests.

The large, dense blooms may need supporting to prevent them drooping down and touching the (potentially damp) ground towards the end of bloom. Harvests of 100g+ of dried buds from Auto Ultimate are not unheard of in the UK, especially when she has enjoyed an uninterrupted sunny/warm bloom period.

As with all outdoor strains, growth under the cover of a greenhouse or polytunnel will protect your plants from the worst of the weather and tend to increase harvest quantities.

Auto Think Different

Lovers of fine quality outdoor autoflowering sativa genetics look no further! Auto Think Different is a best selling, fully-proven autoflower strain that delivers very heavy yields. In the UK she grows from seed to harvest in around 100 days. As with all autoflowers, she benefits when grown in good quality, nutritious soil. If your local soil is poor quality, you may find superior quality/quantity harvests if you supplement with supermarket soil (or grow shop soil).

You can expect the typical Dutch Passion autoflower structure of a dominant heavy central bloom surrounded by a ring of slightly smaller blooms. Part of the Classics cannabis seed collection with very high THC levels – really easy to grow!

Auto Power Plant

Auto Power Plant is the autoflowering version of Dutch Passion’s original Power Plant. She is noted for particularly heavy harvests and uses cannabis cup winning South African sativa genetics. The numerous repeat growers value her for the prize-winning combination of very high THC levels, fast growth and unmistakably chunky blooms!

UK outdoor growers that enjoy a rich terpene profile from their harvests should enjoy the powerful buds with their intense skunky/hashy scented aroma. She is particularly easy to grow outdoors, just offer a sunny location with nutritious moist soil. Then sit back, relax and let the genetics do the work for you!

Auto Critical Orange Punch

Auto Critical Orange Punch has quickly become a best seller with outdoor growers. These are some of the most affordably priced autoflower seeds in the Dutch Passion collection. With very high THC levels and a fresh, zesty citrus taste this heavy yielding auto produces excellent outdoor harvests. The anti-anxiety, stress-busting high is intensely pleasurable as well as easy to grow.

Auto Critical Orange Punch seeds grow well in large containers. As with all Dutch Passion autoflower strains, air pots or fabric smart pots encourage high levels of root aeration and healthy growth above/below ground. She also responds well to LST and SCROG whether grown indoors or outdoors.

Auto Critical Orange Punch seeds are highly recommended for those seeking highly potent harvests, she made the High Times Top-10 cannabis strains of 2018. A major achievement!

Best outdoor feminised cannabis seeds UK

Feminised outdoor cannabis seeds have the advantage of somewhat longer grow cycles and consequently heavier harvests (compared to autoflower seeds) for UK growers. The growth cycle is typically around 5 months from seed to harvest with plants typically ready for harvest around late September or early October.

However, not all outdoor feminised strains will finish in time in all areas of the UK. If you get unlucky with a cold and wet UK September/October then you can lose your photoperiod harvest to mold and bud rot.

Our recommended top-5 photoperiod outdoor feminised cannabis seeds are the toughest in the Dutch Passion collection. They will finish early, and are particularly resistant to outdoor conditions.

Frisian Dew

Frisian Dew has been a best seller with UK outdoor growers for many years. The robust, tough genetics were selectively bred over several outdoor seasons in The Netherlands. This allowed the genetics to acclimatise and adapt to the demanding and unpredictable northern European climate. Frisian Dew is part of the Dutch Outdoor cannabis seed collection, the home of Dutch Passion’s most popular and most successful outdoor seeds.

Frisian Dew is a durable strain that can withstand just about anything. She responds well to LST, supercropping and pruning. You can also try ‘Pinching’ or ‘Fimming’ several times during the growth phase to produce a bushier plant structure. This produces a shorter plant with many side blooms.

For the tastiest buds we recommend completely organic cultivation – with natural nutrition the taste is optimised. Pay extra attention to dead leaves during the middle and end of bloom. Due to the heavy dense buds, dead leaves can cause top rot and fungi more quickly. Grows well, even in northern England.

Durban Poison

Durban Poison is another outdoor strain well suited to UK conditions. This sativa dominant strain originated in South Africa and is often ready to harvest around early October in the UK.

Durban Poison doesn’t mind being bent, topped, super cropped or even scrogged outdoors. The genetics grow well in a range of soil types and are resistant to damp, cool UK summer conditions. Part of the Dutch Outdoor cannabis seed collection. Will grow in Northern England, but may well struggle to complete bloom in Scotland. Growers in the extreme north may prefer to consider growing autoflower seeds rather than relying completely on a mild, dry September/October.

Shaman

Shaman is a large yielding, tough outdoor sativa strain. She often produces purple coloured blooms, especially in cooler outdoor flowering conditions. One of the more robust outdoor strains, she is also grown extensively in greenhouses and polytunnels.

Shaman is resistant to mold and bud rot, making her an ideal choice for the outdoor grower with borderline climate conditions. She requires little maintenance or special growing conditions. Just find her a sunny south-facing location and let the genetics do the work for you. Can reach 2-3m tall in good conditions.

Think Fast

Think Fast is a slightly unusual outdoor cannabis seed recommendation for UK outdoor growers. Think Fast is a feminised photoperiod strain with recessive autoflower genetics. This allows her to complete bloom somewhat quicker than most photoperiod outdoor strains. UK growers may be able to harvest her in mid/late September.

Think Fast is a good option for UK growers who typically find that their outdoor grow season is just a few weeks too short. With the extra bloom speed of Think Fast, it may be possible for you to complete the bloom cycle even in a short UK growing season.

Frisian Duck

Frisian Duck is a unique outdoor cannabis strain. She was developed with a stabilised leaf deformity, the leaves have a webbed appearance with the individual leaflets fused together. This makes it the ideal outdoor cannabis strain for any grower seeking a naturally stealthy strain!

Especially during vegetative growth, Frisian Duck looks unlike any cannabis plant you have seen before! UK urban growers find this natural stealth camouflage particularly valuable. THC levels may only be medium on this strain, but she still delivers a highly pleasurable smoke/vape. Also available in autoflowering cannabis seeds as Auto Duck.

Growing cannabis outdoors in the UK

Growing cannabis outdoors in the UK isn’t that difficult. Plenty of growers harvest their entire annual cannabis requirements from just a handful of outdoor plants grown from a few autoflower seeds or feminised outdoor seeds. One of the keys to outdoor success is to know your growing season well and plan your seed selection accordingly. The further north you are, the more likely that autoflower seeds will be your main outdoor seed choice.

Understanding the typical dates of your last frost allows you to know when to put your plants outdoors. Knowing when the end of season weather turns for the worse is another key piece of information to allow you to plan ahead. One of the most common errors, especially by new UK guerrilla growers, is to germinate their precious outdoor cannabis seeds too early in the season.

If you need some specific help and advice on the growing season at your particular location within the UK then the following guide may help. It offers detailed cultivation advice for outdoor cannabis growers in the UK South East, South West, North East and North West. It also gives detailed advice of germinating your cannabis seeds and the best ways to start your plants indoors and gradually acclimatise them to outdoors.