Super Critical by Green House Seeds is a commercial-grade indica famous for speed and yield. From Big Bud x Skunk x White Widow, it is a strongly indica-dominant, feminized photoperiod plant with a very high 24-25% THC, a sweet, spicy, sour flavor, and a deeply relaxing effect. Its headline traits are an exceptionally fast 7-8 week flower and huge harvests, making it a go-to for growers who want a lot of quality bud, quickly.
This is a feminized photoperiod strain, not an autoflower, so it flowers when you shorten the light cycle and gives you full control over veg length, training, and cloning. It is the photoperiod Super Critical, distinct from the autoflower version. The figures below are Green House breeder values; check your own pack for the exact numbers.
Recommended Strains
Super Critical Auto
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THC | 18% - 20% (Medium) |
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Lineage | Big Bud x Skunk x White Widow x Ruderalis |
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Type | Autoflowering |
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Height | 2.79 ft | 0.85 m |
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Yield Outdoor | 1.23 - 1.76 oz/plant | 35 - 50 g/plant |
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Life Cycle | 7 - 8 weeks |
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Phenotype | 80% Indica / 20% Sativa |
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Effects | Relaxed, Happy, Tingly, Sedative |
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Flavors | Sweet, Spicy |
Super Critical Greenhouse Seeds
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THC | 24% - 25% (High) |
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Lineage | Big Bud x Skunk x White Widow |
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Type | Feminized |
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Height | 5.91 ft | 1.8 m |
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Yield Outdoor | 42.33 oz/plant | 1200 g/plant |
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Flowering Time | 7 - 8 weeks |
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Phenotype | 70% Indica / 30% Sativa |
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Effects | Relaxed, Calming |
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Flavors | Sweet, Spicy, Sour |
Super Critical Grow Info
| Trait | Super Critical (Green House) |
| Genetics | Big Bud x Skunk x White Widow |
| Seed type | Feminized photoperiod |
| Genetic profile | 70% indica / 30% sativa |
| THC | 24-25% (high) |
| Flowering time | 7-8 weeks |
| Height | Around 1.8 m |
| Indoor yield | Not published; high (see note) |
| Outdoor yield | Very high, around 1200 g per plant |
| Effects | Relaxed, calming |
| Flavor | Sweet, spicy, sour |
These are Green House’s published figures for the Super Critical line at Growlantis. The profile does not list an indoor yield; it is described as substantial. Check the specification on your own Super Critical seed pack for exact numbers.
What Makes Super Critical Worth Growing
Super Critical is built for production. Its Big Bud, Skunk, and White Widow heritage combines heavy yield genetics with resin and a very high 24-25% THC, and it does it all on one of the fastest flowers around, just 7-8 weeks. For commercial-minded or impatient growers who still want quality, that speed-plus-yield combination is hard to beat.
The experience is a deeply relaxing, calming body effect, paired with a sweet, spicy, sour flavor. The plant is also resilient and forgiving, so it is approachable despite its size. If your priority is a big, fast, potent harvest, Super Critical is a classic choice.
Is Super Critical Indica or Sativa?
Super Critical is strongly indica dominant, listed at 70% indica and 30% sativa, from Big Bud, Skunk, and White Widow.
That indica dominance drives a heavy, deeply relaxing, calming effect best suited to the evening. The plant has a sturdy, productive, resinous structure built for big yields, with the resilience of its Skunk and White Widow heritage. It is a strong, body-focused strain rather than a daytime one.
Flowering Time vs Full Grow Time
Because Super Critical is a photoperiod strain, these two numbers are separate, and mixing them up is the most common planning mistake.
- Flowering time: 7-8 weeks. This is the bloom stage, which starts only when you switch the lights to 12/12 indoors (or when days shorten outdoors). It is exceptionally fast.
- Full grow time (seed to harvest): flowering plus however long you veg. Indoors, a typical grow runs around 3.5 to 4.5 months from seed, depending on veg length.
The practical point: the very fast flower keeps the cycle short, which is a big part of its commercial appeal. Outdoors, it finishes early, usually late September to early October, helping it beat autumn weather.
Does Super Critical Need a 12/12 Light Cycle?
Yes. Super Critical is a photoperiod strain, so indoors it needs a 12/12 light cycle (12 hours on, 12 hours off) to start and maintain flowering. A separate Super Critical Auto flowers on its own without a flip.
Keep it on a long veg schedule, usually 18/6, for as long as you want it to grow, then flip to 12/12 when it has the size and shape you want. Account for the stretch and flip while it is under your height limit. Outdoors, shortening late-summer days trigger flowering naturally.
Super Critical Grow Timeline, Week by Week
Treat this as a development pattern, not a fixed schedule, since veg length is up to you and the flower is fast.
- Weeks 1-2: germination and seedling. The taproot and first true leaves establish. Keep humidity up and feeding minimal.
- Weeks 3-5: vegetative growth (your choice). The plant builds its frame under 18/6. This is when you top and train.
- Week 0 of flower: the flip. Switch to 12/12. Expect a moderate stretch.
- Weeks 1-3 of flower: stretch and bud set. Vertical growth finishes and flower sites form.
- Weeks 4-6 of flower: bud development. Dense, heavy buds fill out fast and the sweet-spicy aroma builds.
- Weeks 7-8 of flower: ripening and harvest. Judge by trichomes, not the calendar.
Choosing Your Setup: Space, Light and Pots
Super Critical reaches around 1.8 m with a moderate stretch, so flip to 12/12 while it is comfortably under your height limit. Low stress training or a SCROG net keeps the canopy even and makes the most of the big yield. Be ready to support the heavy colas.
Give it strong light to feed the heavy production. A full-spectrum LED at 30-40 watts per square foot over the flowering canopy keeps the dense buds packed. Add a good inline exhaust fan and a carbon filter, since the sweet-skunky aroma is noticeable in flower.
For pots, 3-5 gallon containers suit most indoor grows, scaled to veg time and plant size. Fabric pots improve root airflow and help prevent overwatering.
Germinating and Raising Seedlings
The paper towel method is the simple, reliable start. Soak the seeds for 12-24 hours, then place them between damp paper towels on a covered plate, kept dark and warm at 70-85°F (21-29°C). A taproot usually appears within two to three days.
When the taproot reaches about 1-2 cm, plant it root-down a knuckle deep in a light mix and keep the surface moist until the seedling emerges. Hold off on nutrients at this stage. New to growing? Our beginner growing guides cover germination step by step.
The Vegetative Stage, Topping and Training
Veg is where you shape a photoperiod plant, and Super Critical’s sturdy, high-yield frame responds well to training. Keep it under 18/6 with a nitrogen-rich feed and build a strong, even frame before you flower.
Topping the main stem early encourages multiple colas and a wider, flatter canopy, which spreads the heavy yield and supports those dense buds. Combine it with low stress training or a SCROG net to open the canopy and expose more bud sites to light. Its resilient genetics tolerate training well. Finish before the flip, and you can clone a plant you like before flowering.
Feeding and Watering Super Critical
Feed to the stage and feed generously given the big yield. Use a nitrogen-forward base through veg, then move to a bloom formula higher in phosphorus and potassium once you flip to 12/12 and buds form. It handles a solid feed, but start moderate and increase based on how the plant responds rather than overfeeding early.
Water by root-zone moisture, not a timetable. Let the top inch or two of medium dry between waterings, then water thoroughly until a little drains. Fabric pots and this water-to-weight habit keep the roots healthy and prevent overwatering.
Flowering and Knowing When to Harvest
Once you flip to 12/12, expect a moderate stretch, then dense, heavy buds fill out fast over the quick 7-8 week bloom. The sweet, spicy, sour aroma develops, so keep air moving and run a carbon filter indoors, and support the heavy colas as they swell.
Let ripeness, not the calendar, decide the harvest. Check the trichomes under a loupe and cut when most are cloudy with a few turning amber for the fullest, most relaxing effect. After harvest, hang the branches in the dark at about 60°F (15-16°C) and 55-60% humidity for 7-14 days, then cure in sealed jars, burping daily for the first couple of weeks to protect the flavor.
Growing Indoors vs Outdoors
Indoors, Super Critical is a fast, heavy producer. Hold 18/6 for veg, flip to 12/12, train the canopy even and support the buds, and it delivers a substantial harvest in a short cycle, though the profile does not publish an exact indoor figure.
Outdoors, it is an enormous producer, returning up to 1200 g per plant, and its fast flower lets it finish early, usually late September to early October, beating autumn damp. Give it full sun, rich well-draining soil, strong support, and airflow around the dense buds.
How Tall and How Much? Height and Yield
Height is easy to plan for. Super Critical reaches around 1.8 m with a moderate stretch, so flip early enough and train to keep the final canopy within your space and support the heavy colas.
On yield it is a top producer, a big 1200 g per plant outdoors on a very fast flower. The profile does not list an indoor figure, but it is described as substantial, and a well-lit, trained indoor grow produces a heavy harvest. Strong light, training, and support are what turn its potential into real weight.
Best US Climates for Super Critical
Super Critical does well in a warm, sunny climate, so growers in California, the Southwest, and warmer Western and Southern states can comfortably take it to its big outdoor finish. Its very fast 7-8 week flower also makes it an excellent choice for cooler, shorter-season northern states, where it finishes before cold, damp weather arrives.
Its resilience and quick finish help it handle variable conditions, but in the humid Southeast keep airflow strong around the dense buds. For more options, browse our full how-to-grow guide library.
Common Problems When Growing Super Critical
A few predictable issues come with a big, fast-yielding indica.
Bud rot in dense, heavy colas
The big, dense buds can trap moisture. Keep humidity moderate in late flower, support the colas, and keep strong airflow through the canopy, especially outdoors.
Supporting heavy branches
The heavy yield can snap branches. Stake or net the plant and support the colas as they fill, particularly outdoors.
Underfeeding a heavy yielder
A big producer is hungry. Keep a steady, generous bloom feed and watch for deficiency, adjusting up as the plant demands without tipping into burn.
Harvesting by the calendar
The 7-8 week window is a guide, not a cutting date. Read the trichomes and pistils before you cut, since phenotype and environment shift the timing, and a fast strain can surprise you.
Making the Most of Your Harvest
With a yield this big, the trim adds up. Super Critical makes good bubble hash, dry sift, or infused oil that keeps the sweet-spicy character. The stems, roots, and fan leaves compost well and feed your next grow.
Is Super Critical Right for You?
If you want a big, fast, potent indica harvest with a deeply relaxing effect, yes. Its speed, yield, and resilience make it a commercial-grade classic that still delivers quality, and its quick finish suits cooler climates. If you want an energizing daytime sativa, look elsewhere, or choose Super Critical Auto for an autoflower. Browse our full how-to-grow guide library for more.
Frequently Asked Questions
Is Super Critical indica or sativa?
Super Critical is strongly indica dominant, listed at 70% indica and 30% sativa, from Big Bud, Skunk, and White Widow. The effect is heavy, deeply relaxing, and calming, best suited to the evening. The plant has a sturdy, productive, resinous structure built for big yields, with the resilience of its Skunk and White Widow heritage.
Does Super Critical need a 12/12 light cycle?
Yes. The photoperiod Super Critical needs a 12/12 light cycle indoors to start and maintain flowering. Keep it on 18/6 during veg, then flip to 12/12 when sized right. A separate Super Critical Auto flowers on its own without a flip, so check which version you have before planning your grow.
How long does Super Critical take to grow?
Super Critical flowers in a very fast 7 to 8 weeks once you switch to 12/12, among the quickest photoperiods. Total seed-to-harvest time depends on veg length, usually around 3.5 to 4.5 months indoors. Outdoors it finishes early, usually late September to early October. Judge the finish by trichome maturity.
How much does Super Critical yield?
Super Critical is a top yielder, returning up to 1200 g per plant outdoors on a very fast flower. The profile does not publish an indoor figure, but it is described as substantial, and a well-lit, trained indoor grow produces a heavy harvest. Strong light, training, and support for the colas maximize the weight.
How is it different from Super Critical Auto?
The photoperiod Super Critical, covered here, needs a 12/12 flip and reaches huge outdoor yields up to 1200 g per plant on a 7-8 week flower. Super Critical Auto flowers on its own without a flip and finishes fast, but is smaller and yields less per plant. Choose the photoperiod for maximum size and yield.
Can you clone Super Critical?
Yes. As a photoperiod strain, Super Critical clones well. Take a cutting from a healthy plant in veg, root it, and keep it under 18/6 light. Cloning lets you preserve a heavy-yielding plant you like and run repeatable harvests without buying new seeds each time, which autoflowers cannot do.
What does Super Critical taste like?
Super Critical has a sweet, spicy, sour flavor with earthy undertones, drawn from its Big Bud, Skunk, and White Widow parents. To protect those terpenes, run a carbon filter in flower, dry slowly at around 60°F with moderate humidity, and cure in sealed jars, burping daily for the first couple of weeks. A careful cure keeps the flavor rich.
