Devil XXL Autoflower Seeds
Price range: US$40.00 through US$100.00
Devil XXL Autoflower is an indica-dominant feminized autoflower, 60% indica and 40% sativa, from Big Devil #2 and Auto Jack Herer, with a fruity, skunky and spicy taste, ready about 8 to 10 weeks from seed.
- THC18-20%
- Seed to harvest8–10 wks
- GrowEasy
- TypeFeminized autoflower
Strain Specifications
Specs and grow figures are a guide — results vary with phenotype, setup and grower. Checked October 2026.
Devil XXL Autoflower is an indica-dominant feminized autoflower, 60% indica and 40% sativa, with a fruity, skunky and spicy taste. Its listed parents are Big Devil #2 and Auto Jack Herer, so it flowers on its own clock instead of waiting for shorter days. Expect about 8 to 10 weeks from seed to harvest, and THC listed at 18–20%.
History & lineage
Seed sellers that carry Devil XXL list its parents as Big Devil #2 and Auto Jack Herer. Big Devil #2 Auto is a Sweet Seeds autoflower. Jack Herer, the line behind its Auto Jack Herer parent, won the 1994 High Times Cannabis Cup as Sensi Seeds’ entry.
Sweet Seeds also crosses Big Devil #2 Auto with an autoflowering Jack Herer, but sells that seed under its own name, Big Devil XL Auto. Nothing on record says Devil XXL is that seed, and the figures differ: Sweet Seeds lists its version as 65% sativa, while Devil XXL is listed as indica-dominant. No source names who first bred Devil XXL, so this page doesn’t credit a breeder.
Aroma & flavour
Expect fruity, skunky and spicy notes. One seed listing gives skunk and spice as the taste, and two other sellers’ data sheets give citrus and spice. There is no Leafly page for Devil XXL or any Big Devil line, so there are no user flavour reports to add, and no lab terpene data was found for this autoflower.
Effects, as users report them
There is no Leafly user data for Devil XXL, so these are Leafly users’ reports for Jack Herer, the line behind its Auto Jack Herer parent, most common first; a cross with Big Devil #2 won’t always feel the same. Two sellers’ data sheets list Devil XXL’s own effects as happy, relaxed and talkative. For Jack Herer, dry mouth and dry eyes are the downsides users report most, and smaller numbers report paranoia, dizziness or anxiety. THC is listed at 18–20%, and effects vary with the person and the dose, so if you are new to cannabis, start low.
Growing Devil XXL Autoflower
As an autoflower, Devil XXL needs no change in light hours to start flowering, so one schedule can run from seed to harvest; many growers give autos 18 to 20 hours a day, and our autoflower light schedule guide sets out the options. Seed listings give about 8 to 10 weeks from seed to harvest, and one data sheet lists 49 to 56 days from germination, so watch the plant rather than the calendar and judge when to harvest by the trichomes.
Seed sellers rate it easy to grow, and one sheet marks it as suitable for beginners and for a temperate climate. Expect up to about 450 g/m² (1.5 oz/ft²) indoors and up to 250 g (8.8 oz) per plant outdoors. Height is where the sheets disagree: two give about 165 cm (5.4 ft), while another lists it as small indoors, under about 122 cm (4 ft), and 152–244 cm (5–8 ft) outdoors. Leave some headroom, and see our autoflower height guide for planning it. Good airflow and steady humidity matter in late flower.
Is Devil XXL Autoflower right for you?
- you want an indica-dominant autoflower with fruity, skunky and spicy notes
- you want a harvest about 8 to 10 weeks from seed, with no switch to 12 hours of light
- you are newer to growing — seed sellers rate it easy to grow
- you want to decide when it flowers — a feminized photoperiod waits for you to change the light
- you have very little headroom — some sheets put it at about 165 cm (5.4 ft)
- you want a strain with user reports of its own — Leafly has no page for Devil XXL
Questions buyers ask
Are Devil XXL seeds autoflowering and feminized?
Yes to both. Devil XXL flowers on its own clock, and like every autoflower we sell, the seeds are feminized, so the plants grow as females, the ones that make buds. Our germination guide covers sprouting them.
What are Devil XXL’s parents?
Seed sellers list Big Devil #2 and Auto Jack Herer. Big Devil #2 Auto is a Sweet Seeds autoflower; Sweet Seeds’ own Big Devil XL Auto crosses Big Devil #2 Auto with an autoflowering Jack Herer, but it is a separately named seed listed with different figures.
How long does Devil XXL Autoflower take from seed to harvest?
About 8 to 10 weeks from seed, per its seed listings. It flowers without a change in light hours, so judge the finish by the trichomes rather than the calendar.
How big does Devil XXL Autoflower get?
Two data sheets give about 165 cm (5.4 ft); another lists it as small indoors. Expect up to about 450 g/m² (1.5 oz/ft²) indoors and up to 250 g (8.8 oz) per plant outdoors.
- Quebec Cannabis Seeds — 60% indica, THC, CBD, indoor and outdoor yields, the fruity, skunky, spicy aroma and skunk and spice taste
- Seed sellers’ data sheets — Crop King Seeds (parents, THC, 8–10 weeks seed to harvest, easy rating, height), Blimburn Seeds and Canuk Seeds (parents, 60/40, THC, life cycle, height, climate, beginner rating, effects, citrus flavour)
- SeedFinder — Sweet Seeds’ description of its Big Devil XL Auto (Big Devil #2 Auto × an autoflowering Jack Herer, 65% sativa)
- Leafly — Jack Herer’s user-reported effects and downsides (no Devil XXL page exists)
- High Times (archived Cup records) — Jack Herer’s 1994 Cannabis Cup win (Sensi Seeds)
Read Reviews from our Customers
Big, Bad, and Chill
Devil XXL Auto went crazy—buds huge and sticky, smell’s sweet with a little funk. High hit me hard in the head then rolled into a heavy body melt. Perfect for couch-lock evenings, not messing around with this one.
Big Yields, Bigger Couch Lock
Devil XXL Auto came in hot—grew tall, fast, and thick with chunky red-haired buds that reeked of spice and diesel. Smoked a blunt and didn’t move for two hours. Heavy, heady, and straight-up demonic in the best way. Not for lightweights. Great for after-hours zoning.
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