How to Grow Big Devil Auto
Big Devil Auto is a 65% sativa-dominant autoflowering strain, a cross of Big Devil #2 and Jack Herer Auto. It carries a THC level of 15 to 21%, which sits in the medium range, and delivers a happy, uplifting and relaxed effect over a fruity, sweet and skunky flavor. This guide walks you through the whole grow, from germinating the seeds to the final cure.
As an autoflower it runs on its own clock, finishing its whole life cycle in a quick 8 to 10 weeks from seed, and it can be grown all season. Its forgiving nature, strong yield and bright, uplifting character make it a great choice for first-time growers.
Recommended Strains
Big Devil Auto
|
THC | 15% - 21% (Medium) |
|
Type | Autoflowering |
|
Yield | High |
|
Phenotype | 35% Indica / 65% Sativa |
Blueberry x Big Devil Auto
|
|
THC | 16% - 18% (Medium) |
|
|
Type | Autoflowering |
|
|
Yield | Medium |
|
|
Phenotype | 30% Indica / 70% Sativa |
Big Devil Auto at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this fruity, skunky sativa auto, taken straight from the strain’s grow data.
| Seed type | Autoflowering |
|---|---|
| Genetics | Big Devil #2 x Jack Herer Auto |
| Phenotype | 65% Sativa / 35% Indica |
| THC | 15–21% (medium) |
| Life cycle | 8–10 weeks from seed |
| Harvest | All season |
| Height | up to 4.92 ft (1.5 m) |
| Yield indoor | 1.47–2.13 oz/ft² |
| Yield outdoor | 21.16 oz/plant |
| Climate | Temperate |
| Flavors | Fruity, Skunk, Sweet |
| Effects | Happy, uplifting, relaxed |
| Difficulty | Beginner-friendly |
These are autoflowering seeds, so they flower on age rather than a light change and need no 12/12 switch. Its 65% sativa lean places it among the sativa seeds, while its strong harvest earns it a spot with the high-yielding seeds. If you are still weighing options, the find your strain tool helps you match it against the rest of the catalog.
Promos & Deals
How to Germinate Big Devil Auto Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Big Devil Auto seeds inside two damp sheets, slide them between two plates, and keep them somewhere dark at 70 to 79°F. A taproot usually appears in two to five days.
With autoflowers, sow the sprouted seed straight into its final pot rather than transplanting later. Autos run a short, fixed life cycle and dislike the shock of being moved, so starting in the final container lets the roots grow undisturbed. Keep it lightly moist, hold humidity around 65 to 70%, and give soft light while the first true leaves open.
Starter tips
- Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
- Start directly in the final pot to avoid transplant stress.
- Hold off on nutrients until the second set of serrated leaves appears.
Growing Big Devil Auto in the Vegetative Stage
Autoflowers do not wait for a light change, so give Big Devil Auto 18 to 20 hours of light a day for its whole life, from seedling to harvest. Aim for day temperatures of 68 to 79°F and hold humidity around 50 to 60%. It suits a temperate climate, so steady, moderate conditions work in its favor. With its 65% sativa lean it builds into a medium, open plant that can reach 1.5 m, so give it headroom.
The veg window is short and fixed, so train gently rather than cutting. Use low-stress training (LST), bending and tying the branches down to open the canopy and even out the light, instead of topping, which an auto has little time to recover from. Light, careful handling now sets up a fuller, more even harvest from this productive plant.
Flowering and Buds of Big Devil Auto
Big Devil Auto starts flowering on its own, usually a few weeks from seed, with no light change needed. Keep it on the same 18 to 20 hours of light right through bloom. From seed to harvest the whole life cycle runs a quick 8 to 10 weeks, and it can finish all season.
Through bloom, drop humidity to 40 to 45% and keep air moving so the tightening flowers do not trap moisture. As a sativa-leaning auto it builds long, resinous flowers that carry a sweet, fruity aroma with a skunky punch, the lively Big Devil and Jack Herer character coming through.
At 15 to 21% THC it sits in the medium range, giving a happy, uplifting and relaxed effect, a bright, sociable feel that stays easy and approachable.
Common Problems and Pro Tips
Big Devil Auto is beginner-friendly, but its fixed life cycle and sativa reach point to a few things worth watching.
- No time to recover: an auto runs a short, fixed clock, so avoid topping or heavy defoliation and stick to gentle low-stress training.
- Give it headroom: as a sativa-leaning auto it can stretch toward 1.5 m, so leave vertical space or start LST early to keep it in check.
- Watch the smell: its sweet, fruity-skunk nose grows loud in flower, so run a carbon filter indoors if odor is a concern.
Expert tip: start in the final pot and feed lightly. A gentle nutrient hand, steady 18 to 20 hour light and a slow cure get the most out of its sweet, fruity-skunk character and strong yield.
Aroma, Flavor and Effects
The nose is sweet and lively: a ripe, fruity sweetness up front with a skunky punch underneath. It is a bright, mouth-watering profile that blends candy-like fruit with old-school funk, a nod to its Big Devil and Jack Herer roots.
The flavor follows the nose, sweet and fruity with a skunky finish. On the effect side it is happy, uplifting and relaxed, a bright, sociable feel that eases into an easy calm. Because THC runs a moderate 15 to 21%, it stays rounded and approachable.
Dominant terpenes
Big Devil Auto carries a distinctive terpene profile. Terpinolene leads with a fresh, fruity-herbal lift that drives its lively side, Pinene adds a crisp pine sharpness, Carene a sweet, earthy note, Terpineol a soft, lilac-like sweetness, Terpinene a fresh, citrus-herbal accent, and Nerolidol a delicate, woody-floral touch. A supporting cast of Phellandrene, Eugenol and P-Cymene rounds out its fruity, sweet and skunky character.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. Big Devil Auto is a light feeder with a small auto root zone, so read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.
| Stage | EC |
|---|---|
| Seedling | 0.4–0.6 |
| Growth | 0.8–1.2 |
| Early flower | 1.2–1.4 |
| Full flower | 1.4–1.6 |
| Flush | 0.0–0.4 |
Keep the pH around 6.0 to 6.5 in soil and 5.5 to 6.0 in hydro so the roots can actually take up what you feed.
What to Do With Your Trim: Extracts and Hash
Big Devil Auto builds a solid coat of resin, so its trim is worth keeping rather than tossing. The sugar leaves you take off while manicuring hold trichomes and suit Ice Water Hash, where cold water and agitation separate the resin heads into a clean, solventless concentrate. Pressing that hash into rosin keeps the sweet, fruity flavor intact, or you can run a solvent extraction if that is your setup. The bare stems will not extract, but chopped and composted they feed organic matter back into the soil for your next grow.
Harvesting, Drying and Curing Big Devil Auto
Timing the harvest comes down to the trichomes. Grab a loupe and watch the heads turn from clear to milky white; a scattering of amber signals peak ripeness. For this auto the whole life cycle runs a quick 8 to 10 weeks from seed, and because it can be grown all season you can time harvests to your own schedule.
After the cut, hang the branches in a dark room at 59 to 68°F with humidity near 50% and gentle air movement. Slow beats fast: drying over 10 to 14 days protects the fruity, skunk and sweet aromas that define this strain. When the small stems snap instead of bending, move the buds into jars.
Cure in sealed glass, opening the jars daily for the first week to let moisture escape, then easing off as the aroma deepens. Two to four weeks of patience here is where the sweet, fruity side and skunky punch really come together, and it is the step most first-time growers rush.
Frequently Asked Questions
Is Big Devil Auto a true autoflower?
Yes, Big Devil Auto is a true autoflower, built from Big Devil #2 crossed with Jack Herer Auto. It flowers on age rather than a light change, so it needs no 12/12 switch and finishes its whole life cycle in about 8 to 10 weeks from seed. Just keep it on 18 to 20 hours of light throughout.
Is Big Devil Auto easy to grow for beginners?
Yes, Big Devil Auto is beginner-friendly. It flowers automatically, finishes fast in 8 to 10 weeks, and its genetics are forgiving. Start it in its final pot, use gentle low-stress training instead of topping, and feed lightly, and it is a very manageable first grow, though it does like some headroom.
How long does Big Devil Auto take from seed to harvest?
Big Devil Auto runs a quick life cycle of 8 to 10 weeks from seed to harvest. It starts flowering on its own a few weeks in, with no light change needed, and because it can be grown all season you can plan several runs across the year.
How strong is Big Devil Auto?
Big Devil Auto has a THC level of 15 to 21%, which sits in the medium range. The effect is happy, uplifting and relaxed, a bright, sociable feel rather than an overwhelming one. Its moderate potency makes it an easy, approachable choice for a wide range of growers and users.
How much does Big Devil Auto yield?
Big Devil Auto is high-yielding for an auto, giving a strong 1.47 to 2.13 oz/ft² indoors and up to 21.16 oz per plant outdoors in good conditions. Gentle low-stress training, steady long-day light and a sunny spot help it fill out its long, resinous buds.
Is Big Devil Auto an indica or a sativa?
Big Devil Auto is sativa-dominant, at 65% sativa and 35% indica. Built from Big Devil #2 and Jack Herer Auto, it has an open, resinous structure with a sweet, fruity-skunk profile, balanced by a relaxed body feel from its indica side.
