5 Longest Flowering Autoflower Strains

Let’s take a quick look at the 5 Longest Flowering Autoflower Strains

*Please note that the yields listed above are maximums based on an ideal indoor grow environment. These numbers are likely to change based on factors such as growing experience, light quality, training techniques used and harvesting time.

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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Night Queen Auto

THC Content20%
CBD ContentUnknown
Aroma/FlavorsKush, Creamy, Earthy, Piney
Climategrows in outdoors, indoors as well as in a greenhouse
Plant size100 – 150 cm.
FlowersReady in 10 weeks
YieldsXL Yield
GeneticsNight Queen x Auto Mazar-i-Sharif
EffectsFull-Body Relaxation, Powerful, Long Buzz

One of the longest auto-flowering strain, this strain sure is the Queen in terms of her flowering period and potency. This Indica dominant can be grown in any environment and is known to produce a great harvest of 500 gr/m2.

Night Queen Auto is the auto-flowering version of the famous Afghani Night Queen and gives a taste that is very reminiscent of the Afghani hash. You will be able to taste hints of earthy, piney, and kush flavors on your palette.

This queen not only takes the crown for being one of the longest auto-flowering strain, but also for her powerful 20% THC presence. You will find yourself drawn to this cannabis for taking care of your sleepless nights and body aches.

You can purchase Night Queen Auto seeds from Seedsman.com

Diesel Berry Auto

THC Content15-20%
CBD Content<1%
Aroma/FlavorsFuel, Fruity, Diesel, Berry
Climaterequires a warm climate to grow
Plant size70 – 120 cm.
FlowersReady in 10 weeks
YieldsIndoors: 350 gr/m2
GeneticsBerry Ryder x New York City Diesel
EffectsFull-Body Relaxation, Powerful, Cerebral High

True to its name, the strain has hints of diesel and berry in it. Diesel Berry Auto is one of the longest strains when it comes to flowering. This bad boy can take up to a whopping 75 days to harvest. This legendary strain has Berry Ryder and the famous New York City Diesel for his parents.

This strain has an equal presence of Sativa and Indica and is known to be one of the easiest strains to grow. You are bound to get a whiff of a complex aroma comprising of fuel and sensual berries. It will give you an eloquent head-high that is both calming and deep. Word of caution – you might be in for a trip that takes as long to reside as this strain takes to flower!

You can purchase Diesel Berry Auto seeds from Seedsman.com

Moby Dick Auto

THC Content13-17%
CBD Content1-5%
Aroma/FlavorsWoody, Lemon, Haze
Climateneeds greenhouse environment in cooler regions; requires originating the roots
Plant size70 – 130 cm
Flowers75 days
Yields40 – 230 g/plant
GeneticsHaze Autoflowering x White Widow Autoflowering
EffectsFull-Body Relaxation, Uplifting, Cerebral High

Another classic strain that is known for taking a long time in flowering is Moby Dick Auto. This auto-flower strain requires a generous 75 day to yield and comes packed with up to 17% THC. This strain is an auto-flowering version of the popular Moby Dick strain, which is a cross of White Widow and Haze.

This strain offers a very refreshing favor palette with notes of lemon, cedarwood, and earthy goodness. This Sativa dominant will give you a robust high and a burst of energy to take on any strenuous work with ease. You can always turn to this time-taking, yet potent strain to get your daily dose of contentment and energy!

You can purchase Moby Dick Auto seeds from Seedsman.com

Nevil Bilbo Auto

THC Content13-17%
CBD ContentUnknown
Aroma/FlavorsIncense, Metallic, Haze
Climateneeds 12 hours of light and 12 hours of dark while germination
Flowers10 weeks from germination
YieldsIndoors: 500 – 600 gr/m2; Outdoors: 200 – 300 gr/plant
GeneticsNeville’s Haze x Auto NL
EffectsUplifting, Cerebral High, Stimulating

Talk about being a time-taking auto-flowering strain! Nevil Bilbo Auto can take 10 weeks to flower after germination. This strain of cannabis is obtained after mixing of Northern Lights Auto along with the old Neville’s Haze.

You will find yourself drawn to this Sativa dominant’s aromatic scent of incense and haze. It can grow well in all types of conditions but requires equal hours of light and darkness.

Cannabis lovers might need to wait a while, but this strain provides a fun and uplifting Sativa-high. This strain also comes in handy in treating pain as well as arthritis. You can fairly say that this strain is worth the wait for its “long” list of benefits!

You can purchase Nevil Bilbo Auto seeds from Seedsman.com

Critical Kush Auto

THC Content15%
CBD Content0.8-1.0%
Aroma/FlavorsEarthy, Pine, Kush
Climatemoisture can cause problems; can be grown in any environment
Plant size70cm – 80cm
Flowers75 – 80 days from germination
Yields550 gr/m2
GeneticsCritical Kush X Ruderalis
EffectsFull-Body Relaxation, Uplifting, Cerebral High, Sleepy

Last on our list of longest flowering auto-flowering strains is the Critical Kush Auto. Formerly known as the Critical Rapido, this strain is not so “rapid” while growing up. This strain takes anywhere between 8-10 weeks from the time of germination to harvest.

This Indica dominant might take a while to flower but makes up in its yields that reach as high as 550 gr/m2. This slow flowering strain comes rich in its THC production, which is a good 15%. Cannabis lovers adore this earthy and pine flavored marijuana for intense and relaxing effects.

You can purchase Critical Kush Auto seeds from Seedsman.com

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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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