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.

So today we’re taking a look at the top 10 early-finishing outdoor strains.

Early Finishing Outdoor Strains

Here’s a quick look at our top 10 picks:

Strain Flowering Time
1. Speed+ ~ 7 Weeks from germination*
2. Speed Bud ~ 8-10 Weeks from germination*
3. Big Nugs FAST ~ 6-7 Weeks*
4. Passion #1 ~ 6-7 Weeks*
5. Early Skunk ~ 6-8 Weeks*
6. Early Maroc ~ 8 Weeks*
7. AK47 ~ 7-9 Weeks*
8. LSD ~ 7-9 Weeks*
9. Durban Poison ~ 7-9 Weeks*
10. Orange Bud ~ 8-9 Weeks*

*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

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  • Total Grow Time: 49 days
  • Plant height: 50-90cm
  • Yield: 30-150g/plant
  • Blend: Hybrid (50% Indica/50% Sativa)
  • Type: Auto-Flowering
  • Difficulty Level: Very Easy
  • High: Body High, Relaxing, Mood-Boosting
  • Taste: Fruity, Cheese, Sweet

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!

Speed Bud

Speed Bud

  • Total Grow Time: 56-63 days
  • Plant height: 40-80cm
  • Yield: 25-100g/plant
  • Blend: Hybrid (65% Sativa/35% Indica)
  • Type: Auto-Flowering
  • Difficulty Level: Easy
  • High: Uplifting, Not Overwhelming, Very heady
  • Taste: Diesel, Smooth

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!

Big Nugs FAST

Big Nugs FAST

  • Flowering Time: 42-49 days
  • Plant height: 80-120cm
  • Yield: Up to 300g/plant
  • Blend: Hybrid (80% Indica/20% Sativa)
  • Type: Photoperiod
  • Difficulty Level: Easy to Moderate
  • High: Relaxing, Couch-Locking, Stress-Relieving
  • Taste: Fruity, Sweet

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.

Passion #1

Passion #1

  • Flowering Time: 42 days
  • Plant height: Around 200cm
  • Yield: 250-700g/plant
  • Blend: Hybrid (80% Indica/20% Sativa)
  • Type: Auto-Flowering & Photoperiod
  • Difficulty Level: Easy
  • High: Relaxing, Uplifting, Cerebral
  • Taste: Candy, Citrus, Vanilla

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.

Early Skunk

Early Skunk

  • Flowering Time: 40-50 days
  • Plant height: 200-300cm
  • Yield: Up to 500g/plant
  • Blend: Hybrid (70% Indica/30% Sativa)
  • Type: Auto-flowering
  • Difficulty Level: Easy
  • High: Body High, Mood-Boosting, Uplifting
  • Taste: Musky, Spicy, Pungent

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!

Early Maroc

Early Maroc

  • Flowering Time: 56 days
  • Plant height: 125-175cm
  • Yield: Up to 350g/m2
  • Blend: Sativa
  • Type: Photoperiod
  • Difficulty Level: Very Easy
  • High: Euphoric, Relaxing
  • Taste: Spicy, Strawberry, Herbal, Woody

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.



  • Flowering Time: 49-60 days
  • Plant height: 130-170cm
  • Yield: 200-650g/plant
  • Blend: Hybrid (50% Sativa/50% Indica)
  • Type: Autoflowering & Photoperiod
  • Difficulty Level: Easy to Moderate
  • High: Happy, Euphoric, Creativity Boosting, Social
  • Taste: Earthy, Pungent, Sweet

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!



  • Flowering Time: 56-63 days
  • Plant height: 150-200cm
  • Yield: Up to 500g/plant
  • Blend: Hybrid (55% Sativa/45% Indica)
  • Type: Photoperiod
  • Difficulty Level: Easy
  • High: Cerebral, Psychedelic, Relaxing, Body High
  • Taste: Sweet, Citrus, Earthy

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!

Durban Poison

Durban Poison

  • Flowering Time: 56-63 days
  • Plant height: Up to 220cm
  • Yield: Up to 450g/plant
  • Blend: 100% Sativa
  • Type: Photoperiod
  • Difficulty Level: Generally Easy
  • High: Invigorating, Mood-Boosting, Euphoria
  • Taste: Citrus, Piney, Grapefruit, Earthy

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!

Orange Bud

Orange Bud

  • Flowering Time: 56-63 days
  • Plant height: 80-100cm
  • Yield: Up to 400g/m2
  • Blend: Hybrid (50% Indica/50% Sativa)
  • Type: Auto-flowering
  • Difficulty Level: Easy to Moderate
  • High: Uplifted, Relaxed, Euphoric
  • Taste: Orange, Citrus,

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.

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!

Related articles you might enjoy:

Highest Yield Indoor Strains
Best Low Odor Strains
Best Couch Lock Strains
Highest Yield Indica Strains
Most Popular Indica Strains
Best Strains to Grow Outdoors
Early Finishing Outdoor Strains

James Alexander James Alexander
Hey, I’m James! The founder and head writer here at 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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