Epsilon F1 Auto by Royal Queen Seeds
Epsilon F1 Auto by Royal Queen Seeds is part of a very different breeding programme from the conventional autoflowers in the RQS catalogue.
Rather than taking an established photoperiod strain and crossing it with an automatic parent, Epsilon F1 was created using carefully developed inbred lines descending from four familiar names:
Blue Dream × Blueberry × Amnesia Lemon Haze × Black Domina
The result is a true F1 Hybrid Auto, combining an unusually broad genetic background with the uniformity that Royal Queen Seeds set out to achieve with its F1 programme.
It’s also fast.
Very fast.
Royal Queen Seeds currently describes Epsilon F1 Auto as the fastest autoflower in its entire F1 line, with flowering taking approximately 30–40 days and the complete cycle listed at around 60 days.
At SeedMasters.com, that combination of F1 breeding, four recognisable genetic families and exceptional speed is what makes Epsilon interesting.
Four Familiar Names Behind One F1
There’s a lot going on behind Epsilon F1 Auto.
Its genetic background draws from inbred lines descended from:
Blue Dream
Blueberry
Amnesia Lemon Haze
Black Domina
It’s an interesting mixture.
Blue Dream and Blueberry bring plenty of fruit and berry heritage into the picture, while Amnesia Lemon Haze contributes a much brighter citrus and Haze side.
Then there’s Black Domina.
Its darker, heavily Indica-influenced genetic background adds another dimension altogether.
But Epsilon F1 isn’t simply a four-way polyhybrid with those names thrown together.
Royal Queen Seeds developed inbred parent lines before crossing them to produce the F1 generation.
That’s an important part of the story.
What Does F1 Mean Here?
“F1” has become a popular term in cannabis, but Royal Queen Seeds uses it in a very specific breeding context.
RQS says its F1 hybrids are created by crossing two highly uniform inbred lines.
The first-generation offspring benefit from what’s known as heterosis, or hybrid vigour, while also displaying a high degree of uniformity.
For a collector, that’s probably the most interesting aspect of Epsilon F1 Auto.
It’s not simply the strains appearing in the family tree.
It’s the breeding programme behind them.
Royal Queen Seeds introduced Epsilon as one of the first varieties in what it describes as its world-first catalogue of true F1 cannabis hybrids.
That gives Epsilon F1 Auto a fairly important place in the modern RQS catalogue.
Blueberry, Citrus, Herbs, Lavender and Lime
The genetic mixture becomes particularly obvious when you look at the flavour profile.
Royal Queen Seeds lists:
Blueberry · Citrus · Herbal · Lavender · Lime
There’s quite a lot happening there.
Blueberry provides the deeper fruitiness you’d expect considering the ancestry, while citrus and lime bring a much sharper edge.
Then come the herbs and lavender.
Those more aromatic, floral notes stop Epsilon F1 from becoming another straightforward fruit strain.
RQS also identifies caryophyllene, farnesene, myrcene and pinene as major terpenes in its current data sheet.
At SeedMasters.com, we particularly like the contrast between blueberry and lavender on one side and citrus and lime on the other.
Sweet, sharp, herbal and floral all at once.
The Fastest RQS F1 Auto
This is probably Epsilon F1’s biggest headline.
Royal Queen Seeds calls it the fastest autoflower in its F1 catalogue.
The official data sheet gives a flowering period of only:
30–40 days
The complete cycle is listed at approximately:
60 days
It’s important not to confuse those figures. The 30–40 days refers specifically to flowering, whereas 60 days is RQS’s reference for the complete cycle.
Epsilon F1 Auto is also particularly compact, with the breeder listing a height of only 50–70cm.
Despite those compact proportions, RQS gives production an XXL classification.
Rather than providing a precise grams-per-square-metre figure, that’s the breeder’s current official designation, so that’s the terminology we’d retain on SeedMasters.com.
These specifications are included as breeder-supplied reference information for identifying and comparing collectible cannabis genetics.
How Much THC Does Epsilon F1 Auto Have?
This is another area where we’d stick closely to the breeder’s wording.
Royal Queen Seeds currently lists Epsilon F1’s THC level simply as:
Very High
It does not provide a numerical percentage on the current official data sheet.
That’s worth getting right.
It’s tempting to attach a precise number to every modern strain, particularly for SEO purposes, but if the breeder hasn’t published one, we’d rather not make one up.
RQS describes Epsilon F1’s overall character as calming, long-lasting and physically relaxing.
Its fuller description also mentions a brighter uplifting and motivational element alongside that predominantly relaxing character.
As always, cannabinoid classifications, terpene information and characteristics are breeder-supplied reference details rather than guarantees for every individual expression.
Epsilon F1 Auto at a Glance
Breeder: Royal Queen Seeds
Official Name: Epsilon F1
Genetic Background: Blue Dream × Blueberry × Amnesia Lemon Haze × Black Domina
Seed Type: F1 Hybrid Auto
THC: Very High – no numerical percentage currently stated by RQS
Flowering Time: Approximately 30–40 days
Overall Cycle: Approximately 60 days
Height: Approximately 50–70cm
Production: XXL breeder classification
Flavour: Blueberry, citrus, herbs, lavender and lime
Major Terpenes: Caryophyllene, farnesene, myrcene and pinene
Character: Calming, long-lasting and physically relaxing
Notable Trait: Currently described by RQS as its fastest F1 autoflower
Our Take on Epsilon F1 Auto
At SeedMasters.com, Epsilon F1 Auto is interesting for reasons that go beyond speed.
Yes, 30–40 days flowering and around 60 days overall immediately jump off the specification sheet.
But we’d look at the genetics first.
Blue Dream. Blueberry. Amnesia Lemon Haze. Black Domina.
That’s quite a collection of names to find behind one seed line.
You’ve got fruit, Haze, citrus and old-school Indica influences all meeting within the same genetic background.
Then RQS takes things further by using those genetics within its true F1 breeding programme, working with uniform inbred parent lines rather than simply creating another conventional multi-strain cross.
That’s the important bit.
Epsilon was also among the first varieties released when Royal Queen Seeds introduced its F1 catalogue, so it has a bit more significance within the breeder’s range than another newly released autoflower.
We like the terpene profile too.
Blueberry, lavender, herbs, citrus and lime is much more distinctive than a generic sweet-and-fruity description.
And we actually appreciate that RQS hasn’t attached an enormous THC number to the product page.
The breeder says “Very High” and leaves it there.
We’ll do the same.
For collectors browsing the Royal Queen Seeds range at SeedMasters.com, we’d position Epsilon F1 Auto around three things:
True F1 breeding. An unusually diverse genetic background. Exceptional speed.
The fact that it manages all three in a compact 50–70cm genetic package makes Epsilon one of the more distinctive members of the RQS F1 family.
Epsilon F1 cannabis seeds sold by SeedMasters.com are intended strictly as adult collectible souvenirs and for genetic preservation purposes only. Please check and comply with the laws applicable in your country or region before purchasing.








