Our autoflowering collection brings together twelve strains, from compact plants that stay under 90 cm to others approaching a metre and a half, and from sweet profiles to cheese or Haze. They all share the essential trait, flowering by age, but differ a great deal in everything else. In this guide we compare them using the data on their product pages: cross, declared THC, size and aroma.
What they have in common
An autoflowering strain carries ruderalis in its cross, the short-cycle subspecies that makes the switch to flowering depend on the plant’s age rather than on hours of light. That is why their product pages do not declare flowering days like feminized strains do: their cycle is expressed as a range, which we explain in why the cycle length of an autoflowering strain is always a range. To compare the three seed types, read feminized, autoflowering and fast version: what’s the difference.
All twelve come from our own mother plants, selected and maintained in our seed bank in Barcelona, and all are available in packs of 6, 100 and 1,000 seeds of a single strain.
The twelve, ranked by declared THC
| Strain | Cross | Declared THC | Size | Aroma |
|---|---|---|---|---|
| Al Tiro Auto | Ruderalis × Patagonia × Wendy | 17–22% | Medium habit, large compact buds | Sweet |
| Critical Plus Auto | Critical Bilbo × AK-74 × Ruderalis | 16–21% | Compact, up to about 90 cm | Sugary, fruity and earthy, with hash notes |
| Northern Lights Auto | Northern Lights × Ruderalis | 16–21% | Short, dense and compact | Earthy and piney, with fruity touches |
| AK-74 Auto | Ruderalis × AK-74 | 15–20% | Compact, with many medium-sized buds | Fresh and fruity |
| Sweet Madness Auto | Somango × Critical × Ruderalis | 15–20% | Compact | Sweet, with mango notes |
| Wendy Auto | Ruderalis × Black Widow | 15–20% | Medium height, very branched | Haze |
| White Widow Auto | White Widow × Ruderalis | 15–20% | 70–110 cm, with a marked main cola | Intensely floral, with bittersweet, earthy and woody hints |
| Blueberry Auto | Ruderalis × Blueberry | 14–19% | Compact, with very thick buds | Sweet, with a fruity touch |
| Jack Herer Auto | Ruderalis × Jack Herer | 14–19% | Habit of its Haze line, with elongated spears | Haze, spicy and persistent |
| Patagonia Auto | OG Kush + Northern Lights × Ruderalis | 14–19% | A good-sized auto | Fruity |
| The Palmar Auto | AK-74 × Power Plant | 14–19% | Medium-large, up to nearly a metre and a half | Sweet, with forest fruits and a slightly sour touch |
| Total Cheese Auto | Cheese × Critical × Ruderalis | 13–18% | Large | Cheese, with sweet and fruity hints |
These are catalogue figures declared for the parent lines, useful for comparing strains with each other; they are not a measurement of every seed or a guarantee of results.
By size: from compact to large
This is the most noticeable difference between autoflowering strains, and the product pages describe it clearly:
- Compact: Northern Lights Auto, short and very discreet; Critical Plus Auto, which rarely exceeds 90 cm; AK-74 Auto, with many medium-sized buds spread out; Blueberry Auto, with very thick buds; and Sweet Madness Auto, with a contained habit.
- Medium: White Widow Auto, 70 to 110 cm; Al Tiro Auto, medium habit with good-sized flowers; Wendy Auto, very branched; and Jack Herer Auto, which keeps the habit of its Haze line.
- Large: Patagonia Auto, a good-sized auto; The Palmar Auto, which can approach a metre and a half; and Total Cheese Auto, with buds so heavy the branches may need support.
By aroma: four families
- Sweet and fruity: Al Tiro Auto (sweet, nothing more), Blueberry Auto (sweet with a touch of fruit), Sweet Madness Auto (with a very marked mango note), The Palmar Auto (forest fruits with a sour finish), Patagonia Auto (clean fruit) and AK-74 Auto (fresh and fruity).
- Haze: Jack Herer Auto and Wendy Auto, with the spicy, incense-like register typical of this family, far from the sweet lines.
- Earthy and resinous: Northern Lights Auto (earth and pine, with a lemon and spice flavour) and Critical Plus Auto (sugary and earthy, with hash notes).
- The ones like no other: Total Cheese Auto, with its unmistakable cheese note, and White Widow Auto, with an intense floral profile that is rare in the catalogue.
Two of them also have a striking visual trait: Blueberry Auto can take on bluish tones in low temperatures, and White Widow Auto can show pink and purple tones in late flowering. In both cases this depends on the environment and the phenotype.
Which one best fits your collection?
- If you want the highest declared THC: Al Tiro Auto, at 17–22%.
- If you want a small, discreet plant: Northern Lights Auto or Critical Plus Auto.
- If you are interested in large autos: The Palmar Auto or Total Cheese Auto.
- If you prefer a sweet or fruity profile: Sweet Madness Auto, Blueberry Auto or The Palmar Auto.
- If you like the Haze aroma: Jack Herer Auto or Wendy Auto.
- If you are looking for something different: Total Cheese Auto or White Widow Auto.
You can see them all together in the autoflowering seeds category. And to see how an auto compares with its feminized and fast versions, we have guides for White Widow, AK-74, Critical Plus and Patagonia.
What’s coming
The autoflowering collection will keep growing: new automatic versions are already announced in the catalogue for 2027, including Gorilla Auto, Gelato Auto, Malquerida Auto and several OG lines. We will add them to this comparison once they are available.
Frequently asked questions
Which autoflowering strain declares the most THC?
Al Tiro Auto, with a range of 17–22%. It is followed by Critical Plus Auto and Northern Lights Auto, at 16–21%. These are catalogue ranges for the parent lines, not measurements of every seed.
Which is the most compact autoflowering strain?
According to their product pages, the most contained are Northern Lights Auto, short and very discreet, and Critical Plus Auto, which rarely exceeds 90 cm.
Which is the largest autoflowering strain?
The Palmar Auto, which can approach a metre and a half, and Total Cheese Auto, a large plant with very heavy buds. Patagonia Auto is also a good-sized auto.
Why don’t the auto product pages declare flowering days?
Because an autoflowering strain flowers by age, not when the light cycle changes, so its cycle is described as a range rather than as a flowering figure comparable to that of feminized strains.
Legal information
This article is for information purposes and describes collectible genetic material; it is not growing advice or an indication of use. Trikoma Seeds seeds are sold exclusively for collecting and genetic preservation. Check and respect the law in your country before placing an order. Sales restricted to adults over 18.
