How to Grow Devil XXL Autoflower
Devil XXL Autoflower is a feminized, indica-dominant autoflower (60% indica), a cross of Big Devil #2 and Auto Jack Herer. It carries a 19 to 20% THC level, a citrus and spicy flavor, and a happy, relaxed and talkative effect. As the XXL name suggests, it is a big, generous producer, delivering a heavy harvest on an autoflower’s quick schedule. This guide walks you through the whole grow, from germinating the seeds to the final cure.
It reaches around 1.65 m, runs all season, and wraps its life cycle in 8 to 10 weeks from seed. A productive, forgiving plant, it is a genuinely beginner-friendly way to pull a big autoflower yield.
Recommended Strains
Devil XXL Autoflower
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THC | 19% - 20% (Medium) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 60% Indica / 40% Sativa |
Big Devil Auto
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THC | 15% - 21% (Medium) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 35% Indica / 65% Sativa |
Devil XXL Autoflower at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this big-yielding, citrus-spicy autoflower, taken straight from the strain’s grow data.
| Seed type | Autoflowering |
|---|---|
| Genetics | Big Devil #2 x Auto Jack Herer |
| Phenotype | 60% Indica / 40% Sativa |
| THC | 19–20% (medium) |
| Life cycle | 8–10 weeks from seed |
| Harvest | All season |
| Height | up to 5.41 ft (1.65 m) |
| Yield indoor | 1.47–1.64 oz/ft² |
| Yield outdoor | 28.22 oz/plant |
| Difficulty | Easy, beginner-friendly |
| Climate | Temperate |
| Flavors | Citrus, spicy |
| Effects | Happy, relaxed, talkative |
These are autoflowering seeds, so they flower on age rather than a light change. Its 60% indica lean places it among the indica seeds, its XXL harvest earns a spot with the high-yielding seeds, and its quick, forgiving nature makes it one of the best beginner seeds.
Promos & Deals
How to Germinate Devil XXL Autoflower Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Devil XXL Autoflower 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, the golden rule is to sow straight into the final pot. Autos run on a fixed internal clock, so transplanting stresses them and costs you growth you can never get back in such a short life. Because this is an XXL producer, use a generous final pot so the roots have room to drive that big yield. Keep it lightly moist and give soft light while the first true leaves open.
Starter tips
- Plant directly in a large final pot to avoid transplant stress and fuel the XXL yield.
- Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
- Hold off on nutrients until the second set of serrated leaves appears.
Growing Devil XXL Autoflower in the Vegetative Stage
As an autoflower, Devil XXL Autoflower does not need a light-schedule change to flower, so you can run it on 18 to 20 hours of light a day for its entire life. Aim for day temperatures of 68 to 79°F and humidity around 50 to 60%. It suits a temperate climate, and its brief veg window means every day of healthy early growth counts toward that big final harvest.
Training matters, but handle it gently. Skip topping, which stresses an auto on a fixed clock; instead use low-stress training, tucking and tying branches to open the canopy without cutting. That spreads light to the lower buds and helps the plant carry its XXL yield while keeping its short life on track. At around 1.65 m it is a medium-tall auto, so give it a little headroom.
Flowering and Buds of Devil XXL Autoflower
You do not trigger flowering with Devil XXL Autoflower; it starts on its own a few weeks into the grow, and the whole life cycle wraps in 8 to 10 weeks from seed. It sets dense, resinous buds and plenty of them, living up to the XXL name with a heavy, chunky harvest.
Through bloom, drop humidity to 40 to 45% and keep air moving so the heavy flowers stay dry. The buds build a bright citrus aroma with a spicy, peppery edge, the Jack Herer side lending a zesty lift over Big Devil’s productive, resinous structure.
At 19 to 20% THC it sits in the medium range, giving a happy, relaxed and talkative effect, a sociable, well-rounded feel that stays balanced rather than overwhelming.
Common Problems and Pro Tips
Devil XXL Autoflower is a forgiving, beginner-friendly grow, but its big yield and autoflower nature point to a few things worth watching.
- Support the XXL yield: its heavy, dense buds can bend or snap branches, so stake or trellis them before the weight builds up.
- Do not top it: autos cannot recover lost time, so train with gentle LST instead of cutting the main stem.
- Feed to match the harvest: a big producer in a large pot needs steady feeding, but start low and build up slowly to avoid nutrient burn.
Expert tip: this plant’s strength is sheer yield, so give it a big pot, strong light and good support, and cure slowly so the bright citrus and spice hold up on that heavy harvest.
Aroma, Flavor and Effects
The nose is bright and lively: a zesty citrus lift up front with a spicy, peppery edge underneath. It is a fresh, energetic profile, the citrus of its Jack Herer side meeting a warm spice, more zippy than sweet or earthy.
The flavor follows the nose, zesty citrus with a spicy finish. On the effect side it is happy, relaxed and talkative, a sociable, well-rounded feel. Because THC runs a medium 19 to 20%, it stays balanced and approachable rather than overwhelming.
Dominant terpenes
Devil XXL Autoflower carries a bright, spicy terpene profile. Carene brings a zesty citrus-cypress edge and Gamma-Terpinene a fresh, citrus-herbal lift, together driving the citrus side, while Eugenol adds a warm, clove-like spice and Phellandrene a peppery, minty note. Pinene lends a clean pine freshness and Terpineol a touch of sweetness, with a supporting note of Nerolidol rounding out its citrus, spicy character.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. As a big, XXL-yielding autoflower Devil XXL Autoflower is a steady feeder for an auto, so read the plant: 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
Devil XXL Autoflower builds a good coat of resin across a big harvest, so its trim is well 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 zesty citrus 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 Devil XXL Autoflower
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. With this autoflower the whole life cycle runs 8 to 10 weeks from seed, and because it finishes on its own clock, let the trichomes, not the calendar, make the final call.
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 citrus and spicy aromas that define this strain, and a big harvest needs good airflow to dry evenly. 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 zesty citrus and warm spice really come together, and it is the step most growers rush.
Frequently Asked Questions
Is Devil XXL Autoflower a true autoflower?
Yes. Devil XXL Autoflower carries ruderalis genetics from its auto parents, so it flowers automatically with age rather than waiting for a change in the light cycle. You can keep it on 18 to 20 hours of light for its entire life, and it will still begin to bloom on its own a few weeks into the grow.
How long does Devil XXL Autoflower take to grow?
Devil XXL Autoflower completes its whole life cycle in 8 to 10 weeks from seed. Because it is an autoflower, there is no separate veg and flower trigger to manage, which is a big part of why it can deliver such a large harvest on a quick, beginner-friendly schedule.
How much does Devil XXL Autoflower yield?
Devil XXL Autoflower lives up to its name as a big producer. Indoors it gives around 1.47 to 1.64 oz/ft², and outdoors a well-grown plant can reach a huge 28.22 oz. A large final pot, strong light and gentle training are what unlock that XXL potential within its short life.
How strong is Devil XXL Autoflower?
Devil XXL Autoflower has a THC level of 19 to 20%, which sits in the medium range. The effect is happy, relaxed and talkative, a sociable, well-rounded feel. It is balanced and approachable rather than overpowering, in keeping with its easygoing, all-round character.
What does Devil XXL Autoflower taste like?
Devil XXL Autoflower leads with a bright, zesty citrus flavor and a warm, spicy edge, a fresh and lively profile rather than sweet or earthy. The citrus comes largely from its Jack Herer side. Both the aroma and flavor deepen noticeably as the buds cure slowly after harvest.
Is Devil XXL Autoflower good for beginners?
Yes. Devil XXL Autoflower is forgiving, automatic and productive, so there is far less to manage than with a photoperiod strain while still rewarding you with a big harvest. Just plant it in a large final pot, feed steadily, support the heavy branches, and train with LST for a rewarding first grow.
