Alaska Thunderfuck Autoflower

Alaska Thunderfuck Autoflower is a cold-hardy, high-yielding legend with up to 22% THC. This sativa-dominant strain delivers euphoric, energetic effects and grows well in cooler climates with minimal effort—ideal for daring growers.
(26)
THC THC 22% - 23% (Medium)
Lineage Lineage (North American x Afghani) x Ruderalis
Type Type Autoflowering
Height Height 3.94 ft | 1.2 m
Yield Yield High
Yield Indoor Yield Indoor 1.64 oz/ft² | 500 g/m²
Yield Outdoor Yield Outdoor 28.22 oz/plant | 800 g/plant
Life Cycle Life Cycle 9 - 10 weeks
Phenotype Phenotype 40% Indica / 60% Sativa
Effects Effects Energetic, Euphoric, Happy
Flavors Flavors Earthy, Spicy, Sweet

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Lineage & Origin of Alaska Thunderfuck Autoflower Strain

Alaska Thunderfuck Autoflower strain is a legendary strain wrapped in mystery and cold-climate ruggedness. Allegedly bred in the 1970s by a grower named Tiny in Trapper Creek, Alaska, this rare cannabis gem combines North American, Afghani, and Ruderalis genetics. Although the original lineage disappeared for decades, the strain made its mysterious return in 2020.

Now, autoflowering cultivators can experience this mythical strain firsthand with an easier grow and a fast onset of effects that keep this strain’s legacy alive.

Alaska Thunderfuck Auto Strain: Sativa or Indica?

Alaska Thunderfuck Auto strain is a 60% Sativa, 40% Indica hybrid with 10% Ruderalis that brings out the best of both worlds. Its high kicks off with a burst of energy and euphoria that fuels productivity and creativity. As the heady effects evolve, a warm body buzz settles in without anchoring you to the couch.

The high is long-lasting and best suited for experienced users who want to stay alert, happy, and slightly elevated throughout the day.

Effects & Flavors of Alaska Thunderfuck Autoflower Seeds

Alaska Thunderfuck Autoflower seeds hits fast and hard, delivering energetic, euphoric, and happy effects. It’s an ideal strain for a motivating wake-and-bake or daytime adventure. ATF’s flavor profile is unmistakable: earthy, spicy, and sweet, with skunky undertones laced with pine and citrus zest. These bold flavors are matched by a pungent aroma that lingers in the grow room and rolls off each cured nug.

Terpenes

  • Limonene: Adds bright citrus notes and promotes mood-lifting effects.
  • Pinene: Offers fresh pine aroma and is associated with improved airflow and anti-inflammatory benefits.

Conditions for Germination of Alaska Thunderfuck Autoflower Cannabis Seeds

Germinate your ATF seeds with confidence using our free germination guide. This strain is covered by our 90% germination guarantee. Maintain a warm and dark environment between 70–79ºF with steady moisture levels to give your seeds the best possible start.

Alaska Thunderfuck Auto Cannabis Strain Flowering Time

Alaska Thunderfuck Auto strain flowers in 55–65 days indoors. Outdoor growers can expect harvest readiness between late September and early October. For autoflowering seeds, you won’t need to adjust your light cycle, making this a convenient and efficient option for intermediate cultivators.

Indoor and Outdoor Growing Conditions

This strain thrives in cooler climates, making it perfect for northern growers. While it prefers 70–80°F, it can handle dips below that with no issues. Maintain 60–70% humidity in early stages and drop to 40–50% during flowering. Provide solid airflow and good ventilation to protect your buds from mold and mildew.

Because this plant is tall and narrow, be sure to give it vertical space to stretch, especially outdoors. Techniques like topping and LST work well to improve yield and structure.

Medical Benefits of Alaska Thunderfuck Autoflower

  • Mood Disorders: Uplifts and boosts mood, easing symptoms of depression and anxiety.
  • Fatigue: Its energizing properties help combat exhaustion and boost motivation.
  • Body Aches: Though Sativa-dominant, ATF offers light relief for aches and tension.
  • Appetite Loss: Can help stimulate hunger in users who need support with eating.

Please note that individual experiences may vary, and it’s advisable to consult with a healthcare professional before using this strain for medical purposes.

Reviews

July 29, 2025

Quality seeds outshines the rest.

Avatar for Alonso
Alonso
July 25, 2025

My plants just entered flower phase. They are growing very nicely. All my seeds I have used so far have sprouted with no issue at all.

Avatar for Everett
Everett
May 10, 2025

I’ve grown multiple strains, and this one is definitely one of the best.

Avatar for Markalita
Markalita
April 6, 2025

The buds from this strain were dense and covered in crystals. Great quality!

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Robert Williams

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