Top 10 Early Finishing Outdoor Strains 2020

There are many reasons why it’s important to consider flowering time when planning your outdoor grow.

The main concern when growing outdoors is seasonal weather change.

Choosing an early-finishing strain will avoid the Autumn rains and frosts that can harm crops.

Let’s take a quick look at the top 10 early-finishing outdoor strains:

*Other than the first two on the list, these are post-vegetative flowering-time estimates based on optimal growing conditions. Harvest time is likely to increase or decrease depending on the following key factors:

  • Individual genetic lineage
  • Germination Method
  • Availability of light
  • Yearly climate variations
  • Local micro-climate
  • Nutrient & PH levels

Keep reading to find out about more information about each strains THC content, effects, flowering time, grow difficulty and much more.

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Speed+

Speed+

THC Content15-20%
CBD Content0.7%
Aroma/FlavorsFruity, Cheese, Sweet
Plant TypeHybrid (50% Indica/50% Sativa)
DifficultyVery Easy
ClimateIndoors, Outdoors
Plant size50-90cm
Flowers49 days
Yields30-150g/plant
GeneticsAuto Critical Mass x Speed Devil #2
EffectsBody High, Relaxing, Mood-Boosting

The total grow time listed is not a typo; blazing from germination to harvest in only 49 days, Speed+ Auto grows at a remarkably fast rate.

Not just a fast grower, this auto-flowering strain will grow almost anywhere.

In moderate climates with a warm summer it’s even possible to fit in two harvests back-to-back!

Like all strains it prefers as much strong sunlight as possible, however this is a strain that is known to grow well in cooler zones.

A balanced hybrid, Speed+ Auto provides a full-bodied Indica high with the mood-boosting and euphoric effects of its Sativa genetics.

Due to its very quick grow time this is an ideal strain for patients who require a quick and dependable medicinal crop.

The numbers don’t lie – from seed top crop in 49 days, Speed+ Auto is our top pick for early-finishing outdoor strains!

You can purchase Speed+ Auto seeds from Seedsman.com

Speed Bud

Speed Bud
Aroma/FlavorsDiesel, Smooth
Plant TypeHybrid (65% Sativa/35% Indica)
DifficultyEasy
ClimateGreenhouse, Indoors, Outdoors
Plant size40-80cm
Flowers56-63 days
Yields25-100g/plant
GeneticsMixed Autos
EffectsUplifting, Not Overwhelming, Very heady

As the name suggests, Speed Bud is another strain that was bred with the quickest harvest possible in mind.

This auto-flowering, feminized variety is known to flower in as little as 56 days, and is highly recommended for growing outside due to very low odor.

It will grow happily in most mediums, and will flower in almost any climate as long as it’s not overly cold!

As with the previous strain, the brief maturing period will mean lower crop yields.

Known for a heady high that isn’t overwhelming, this is a great Sativa-dominant hybrid that won’t stop your day in its tracks.

Though it produces a lower yield, if grow time is your main concern we definitely recommend giving Speed Bud a try!

You can purchase Speed Bud seeds from Seedsman.com

Big Nugs FAST

Big Nugs FAST
Aroma/FlavorsFruity, Sweet
Plant TypeHybrid (80% Indica/20% Sativa)
DifficultyEasy to Moderate
ClimateGreenhouse, Indoors, Outdoors
Plant size80-120cm
Flowers42-49 days
YieldsUp to 300g/plant
GeneticsAfghani x Skunk (Critical Mass / Big Bud) x Fast
EffectsRelaxing, Couch-Locking, Stress-Relieving

Though it may sound like a sketchy payday lender, Big Nugs FAST has a stellar reputation for producing copious amounts of Cannabis quickly!

Large, trichome-covered buds are marked by orange hair and a delicious, fruity scent that will make you excited for harvest!

The only thing heavier than the colas on this strain are its Indica effects – with THC measured between 15-20% it definitely can have a couch-locking effect.

Ready to harvest in September, this is a strain that does well outdoors and the only extra care it requires is a simple support system hold up the bud-heavy branches!

If a quick harvest is your top concern without wanting to sacrifice yield too much, Big Nugs FAST is a great compromise and has been a go-to for commercial growers for years.

You can purchase Big Nugs Fast seeds from Seedsman.com

Passion #1

Passion #1
THC Content18.6%
CBD ContentInsignificant amount
Aroma/FlavorsCandy, Citrus, Vanilla
Plant TypeHybrid (80% Indica/20% Sativa)
ClimateGreenhouse, Indoors, Outdoors
Plant sizeAround 200cm
Flowers42 days
Yields250-700g/plant
Genetics?x?
EffectsRelaxing, Uplifting, Cerebral

With an extensive track record of reliability and quality, Passion #1 is another top early-flowering choice.

With slightly secretive genetic lineage, it’s hard to pinpoint where Passion #1 gets its delicious candy-like flavor.

What is known however, is that yields are surprisingly good for such an early flowerer, and even growers at higher latitudes see successful harvests year after year!

Unlike some of our other strains, this hybrid has much more pronounced Sativa effects and will invigorate the mind as much at is relaxes the body.

Passion #1 can grow very tall (up to 350cm), so it may be more appropriate for grows where stealth is not a primary concern.

This hardy strain is an excellent choice for any outdoor grow, and promises faster flowering times that will beat even the earliest signs of Autumn.

You can purchase Passion #1 seeds from Seedsman.com

Early Skunk

Early Skunk
Aroma/FlavorsMusky, Spicy, Pungent
Plant TypeHybrid (70% Indica/30% Sativa)
DifficultyEasy
ClimateGreenhouse, Indoors, Outdoors
Plant size200-300cm
Flowers40-50 days
YieldsUp to 500g/plant
GeneticsEarly Skunk (Skunk #1 x Early Pearl) x Ruderalis
EffectsBody High, Mood-Boosting, Uplifting

Bred with a Ruderalis gene, Early Skunk is so hardy that it grows well in northern Europe as well as the Midwest and Canada!

It’s also mold and pest-resistant, and flowers automatically making it an excellent choice for first-time growers.

If you live in a warm climate, Early Skunk can provide growers multiple harvests per summer with seeds started indoors and then moved outside as temperatures warm up.

A nice Indica body high paired with an uplifting head space makes this a great choice for reducing anxiety, relieving pain and combating stress.

With no sacrifice on yield or THC content, if you live in a northern or cooler climate then this may just be the strain for you!

You can purchase Early Skunk seeds from Seedsman.com

Early Maroc

Early Maroc
THC Content17%
CBD ContentInsignificant amount
Aroma/FlavorsSpicy, Strawberry, Herbal, Woody
Plant TypeSativa
DifficultyVery Easy
ClimateOutdoors
Plant size125-175cm
Flowers56 days
Yields250-350 gr / plant
GeneticsMaroco landrace
EffectsEuphoric, Relaxing

Another time-tested strain, Early Maroc has been around for centuries and is the ideal choice for guerilla-gardening.

Originally from Morocco it requires a lot of light, however other than this requirement it’s one of the easiest and lowest-maintenance strains on the planet.

It requires only minimal nutrients and water, meaning it can grow in arid or non-tended areas.

It has a euphoric, mood-boosting high that gives way to a mellow body high that’s very sociable and relaxing.

Harvested as early as mid-august, it does really well in a large pot (rather than a bed) and when trained down is a great choice for any sunny apartment balcony.

You can purchase Early Maroc seeds from Seedsman.com

AK47

AK47
THC ContentUp to 20%
CBD ContentInsignificant amounts
Aroma/FlavorsEarthy, Pungent, Sweet
Plant TypeHybrid (50% Sativa/50% Indica)
DifficultyEasy to Moderate
ClimateIndoors, Mediterranean
Plant size130-170cm
Flowers49-60 days
Yields200-650g/plant
Genetics?x?
EffectsHappy, Euphoric, Creativity Boosting, Social

AK47 is a lot less threatening than it sounds – if fits of giggling and increased creativity are prized effects this may just be your new jam!

This is a highly-popular strain, with a lovely mix of effects than tend towards the Sativa spectrum depending on the plant.

It has multiple genetic variants; typically the auto-flowering variety is known to flower the fastest.

Keep in mind one drawback is that AK47 is not a predictable yielder; final harvest is heavily dependent upon environmental factors too.

Don’t let that put you off – many people have been successful in growing this strain and the bud it produces was good enough to win multiple Cannabis Cups!

Often ready to harvest in mid-September, AK47 is another great choice for early flowering crops!

You can purchase AK47 seeds from Ilovegrowingmarijuana.com

LSD

LSD
THC ContentUp to 24%
CBD ContentInsignificant amount
Aroma/FlavorsSweet, Citrus, Earthy
Plant TypeHybrid (55% Sativa/45% Indica)
DifficultyEasy
ClimateIndoors, Steppe, Mediterranean, Temperate
Plant size150-200cm
Flowers56-63 days
YieldsUp to 500g/plant
Genetics?x?
EffectsCerebral, Psychedelic, Relaxing, Body High

Famous for a strongly-cerebral high, LSD earns its name for effects that vaguely resemble those of the famous psychedelic.

Don’t worry – this plant is all THC; however with a 24% THC level it’s certainly one to be approached with caution.

LSD plants are hardy, strong and don’t require a high level of maintenance and care.

They do require light and warmth however, so a sheltered area or the use of a wind-breaker is best for cooler climates.

Another strain that harvests very respectable yields in mid-September, LSD is a go-to for growers who have a short but warm summer!

You can purchase LSD seeds from Ilovegrowingmarijuana.com

Durban Poison

Durban Poison
THC ContentUp to 20%
CBD ContentInsignificant amount
Aroma/FlavorsCitrus, Piney, Grapefruit, Earthy
Plant Type100% Sativa
DifficultyGenerally Easy
ClimateIndoors, Steppe, Mediterranean
Plant sizeUp to 220cm
Flowers56-63 days
YieldsUp to 450g/plant
Genetics?x?
EffectsInvigorating, Mood-Boosting, Euphoria

Like a shot of happiness, Durban Poison is a mood-boosting and mind-elevating strain that flowers as quickly as 7 weeks.

It can easily grow to be 220cm tall, so the Screen of Green (ScrOG) method is recommended to ensure heavy top colas don’t break the stems.

Popular for nearly fifty years, Durban Poison is a tried and true outdoor grower that flowers quickly and prefers a lot of sunshine.

If Sativas are your thing, we highly recommend giving this strain a go!

You can purchase Durban Poison seeds from Ilovegrowingmarijuana.com

Orange Bud

Orange Bud
THC ContentUp to 18%
CBD ContentInsignificant amount
Aroma/FlavorsOrange, Citrus
Plant TypeHybrid (50% Indica/50% Sativa)
DifficultyEasy to Moderate
ClimateIndoors
Plant size80-100cm
Flowers56-63 days
YieldsUp to 400g/m2
Genetics?x?
EffectsUplifted, Relaxed, Euphoric

Last on our list is Orange Bud, a strain that both looks and tastes exactly like it sounds!

More compact than our other choices, Orange Bud grows very well outdoors and will benefit from the Sea of Green (SOG) growing method due to its short stature.

With a harvest towards the end of September or beginning of October, if you’re not wearing a jacket until Autumn this strain will grow fine in your area!

Growing in popularity, Orange Bud provides a euphoric and uplifting high with relaxing properties that make it a great evening smoke.

You can purchase Orange Bud seeds from Ilovegrowingmarijuana.com

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Final Thoughts

And that brings us to the end of our review of the top 10 outdoor early flowering strains!

As we’ve seen there are some trade-offs as well as some benefits when choosing strains that harvest early, however there are plenty to choose from.

Most importantly, make sure to plan your grow; proper strain selection and the right planting time will not only ensure a successful harvest, but can even mean multiple harvests in a single season!

With that in mind, any of the strains on our list would make an excellent choice for any outdoor grow requiring an earlier harvest time.

Happy growing!

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James Alexander James Alexander
Hey, I'm James! The founder and head writer here at GreenBudGuru.com. I started this site to share my passion and knowledge of all things cannabis. I used to work as a budtender in central Amsterdam, and have over 7 years of growing experience.

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