How To Grow Red Dragon from Seed to Harvest 

Red Dragon is a Blimburn Seeds balanced hybrid built from exotic genetics: a Brazilian sativa landrace crossed with Afghani (Pakistani Kush) indica. The result is a feminized photoperiod plant at a comfortable 21-22% THC, with a fruity, sour, pungent profile and a creative, happy, relaxing effect. It stays a manageable size, yields well, and is forgiving enough for a first-time grower, which makes it a genuinely versatile strain. 

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. The figures below are Blimburn’s breeder values; check your own pack for the exact numbers. 

Recommended Strains

Red Dragon

	THC	21% - 22% (Medium)
	Lineage	Brazilian x Afghani (Pakistani Kush)
	Type	Feminized
	Height	3.94 ft | 1.2 m
	Yield	High
	Yield Indoor	1.97 oz/ft² | 600 g/m²
	Yield Outdoor	21.16 - 28.22 oz/plant | 600 - 800 g/plant
	Flowering Time	8 - 10 weeks
	Phenotype	55% Indica / 45% Sativa
	Medical	Anxiety, Fatigue, Migraines
	Effects	Creative, Euphoric, Happy
	Flavors	Fruity, Pungent, Sour

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3 Seeds - $426 Seeds - $659 Seeds - $8025 Seeds - $19550 Seeds - $320100 Seeds - $580 Add to cart

Auto Northern Dragon Fuel

	THC	20% - 21% (Medium)
	Lineage	Landrace Afghani x Northern Lights x SSSC Autoflower
	Type	Autoflowering
	Height	3.94 ft | 1.2 m
	Yield	High
	Yield Indoor	1.47 - 1.64 oz/ft² | 450 - 500 g/m²
	Life Cycle	10 - 11 weeks
	Phenotype	60% Indica / 40% Sativa
	Effects	Uplifted, Sedative, Relaxed
	Flavors	Pungent, Earthy, Fuel

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3 Seeds - $65.255 Seeds - $102.95 Add to cart

Red Dragon Grow Info 

These are Blimburn’s published figures for the Red Dragon line at Growlantis. When you need an exact THC percentage, height, or yield, check the specification on your own Red Dragon seed pack. 

What Makes Red Dragon Worth Growing 

Red Dragon’s appeal is balance. The Brazilian sativa brings a creative, uplifting lift and an exotic fruity-sour flavor, while the Afghani (Pakistani Kush) indica adds body, resin, and a relaxing finish. Neither side runs away with the plant, so you get a sociable, functional effect rather than a one-note couch-lock or a racy sativa. 

For the grower, it is a practical choice. It stays a manageable 1.2 m, pushes a high 600 g/m² indoors, flowers in a reasonable 8-10 weeks, and is listed as suitable for beginners and experienced growers alike. That mix of easy handling, strong yield, and a distinctive flavor is what makes it worth a spot in the tent. Note this is Blimburn’s Red Dragon from Brazilian and Afghani genetics, which differs from other breeders’ Red Dragon lines. 

Is Red Dragon Indica or Sativa? 

Red Dragon is a balanced hybrid, listed at 55% indica and 45% sativa, from a Brazilian sativa crossed with Afghani (Pakistani Kush) indica. 

That balance defines it. The plant has a semi-compact, manageable structure with good resin, while the effect is creative, euphoric, and happy up front, easing into a gentle relaxation rather than a heavy sedation. It works across the day for most people, which is part of its broad appeal. 

Flowering Time vs Full Grow Time 

Because Red Dragon is a photoperiod strain, these two numbers are separate, and mixing them up is the most common planning mistake. 

• Flowering time: 8-10 weeks. This is the bloom stage, which starts only when you switch the lights to 12/12 indoors (or when the season shortens days outdoors). 

• Full grow time (seed to harvest): flowering plus however long you veg. Indoors, a typical grow runs around 4 to 5 months from seed, depending on how long you keep the plant in veg. 

The practical point: you control the total time by choosing your veg length. A longer veg means a bigger plant and a bigger harvest; a shorter veg gets you to harvest faster. Outdoors, expect to harvest around early to mid October. 

Does Red Dragon Need a 12/12 Light Cycle? 

Yes. Red Dragon is a photoperiod strain, so indoors it needs a 12/12 light cycle (12 hours on, 12 hours off) to start and maintain flowering. 

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 the plant has the size and shape you want. Outdoors, the shortening days of late summer trigger flowering naturally. This photoperiod control is an advantage: you decide exactly when the plant starts to bloom. 

Red Dragon Grow Timeline, Week by Week 

Treat this as a development pattern, not a fixed schedule, since veg length is up to you. 

• Weeks 1-2: germination and seedling. The taproot and first true leaves establish. Keep humidity up and feeding minimal. 

• Weeks 3-6: vegetative growth (your choice). The plant builds its frame under 18/6. This is when you top and train. Veg as long as you want the plant to get bigger. 

• Week 0 of flower: the flip. Switch to 12/12. The plant will stretch for the first two to three weeks, often close to doubling in height. 

• Weeks 1-3 of flower: stretch and bud set. Vertical growth finishes and flower sites form. 

• Weeks 4-8 of flower: bud development. Dense, resinous buds fill out and the fruity-sour aroma builds. 

• Weeks 8-10 of flower: ripening and harvest. Judge the finish by trichomes, not the calendar. 

Choosing Your Setup: Space, Light and Pots 

Red Dragon’s manageable 1.2 m height suits a standard tent, but remember the flowering stretch, so flip to 12/12 while the plant is still well short of your height limit. Low stress training or a SCROG net keeps the canopy even and makes the most of the space. 

Give it strong light to back the high yield. A full-spectrum LED at 30-40 watts per square foot over a flowering canopy keeps the buds dense. Pair it with a good inline exhaust fan and a carbon filter, since the pungent, sour aroma is noticeable in flower. 

For pots, 3-5 gallon containers suit most indoor grows, scaled to your veg time and plant size. Fabric pots improve airflow to the roots 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 Red Dragon responds well. Keep it under 18/6 with a nitrogen-rich feed, and because you control the timing, you can take your time building a strong, bushy frame. 

Topping the main stem early encourages multiple colas and a wider, flatter canopy. Combine it with low stress training or a SCROG net to spread the growth and expose more bud sites to direct light. Finish the heavy training before you flip to 12/12 so the plant can focus on flowering. Being able to clone is a bonus here: take a cutting from a plant you like before flowering to keep that genetics going. 

Feeding and Watering Red Dragon 

Feed to the stage. Use a nitrogen-forward base through veg, then switch to a bloom formula higher in phosphorus and potassium once you flip to 12/12 and buds begin to form. Red Dragon handles a solid feed given its vigor, but start moderate and increase based on how the plant responds rather than overfeeding from the start. 

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 the overwatering that stalls young plants. 

Flowering and Knowing When to Harvest 

Once you flip to 12/12, expect a stretch of two to three weeks before the plant settles into bud production. Over the 8-10 week bloom, dense, resinous buds fill out and the fruity, sour, pungent aroma develops, so keep air moving and run a carbon filter indoors. In a cool-finishing environment, some phenotypes can show warmer, reddish hues late in flower, though the main draw is the resin and flavor. 

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 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 aroma. 

Growing Indoors vs Outdoors 

Indoors, Red Dragon rewards control. Hold 18/6 for veg, flip to 12/12 when sized right, use training to even the canopy, and the 600 g/m² yield is very reachable under strong light. 

Outdoors, it is a strong performer in a warm, sunny climate, returning a high 600-800 g per plant and usually finishing around early to mid October. Its manageable height makes it easier to place discreetly than a towering sativa, while the Afghani side gives it decent resilience. Give it full sun, rich well-draining soil, and airflow around the dense buds. 

How Tall and How Much? Height and Yield 

Height is easy to plan for. Red Dragon reaches around 1.2 m, so account for the flowering stretch and flip early enough that the final canopy fits your space. Training keeps it flat and even. 

On yield it is a strong producer, listed as high at around 600 g/m² indoors and 600-800 g per plant outdoors. Strong light, a SCROG or topped canopy, and a healthy root zone are what turn that potential into actual weight. 

Best US Climates for Red Dragon 

Red Dragon does best in a warm, sunny climate with a long enough season to finish an 8-10 week bloom outdoors. Growers in California, the Southwest, and warmer Western and Southern states can comfortably take it to an October finish. 

In cooler or shorter-season states, its manageable size and reasonable flowering time make it a strong indoor candidate, where you control the environment fully. In the humid Southeast, keep airflow strong around the dense buds to protect them late in flower. For more options, browse our full how-to-grow guide library. 

Common Problems When Growing Red Dragon 

A few predictable issues are easy to head off. 

Underestimating the flowering stretch 

Like most photoperiod hybrids, Red Dragon stretches after the flip. Switch to 12/12 while it is still well under your height limit so the final canopy fits your space. 

Loose, airy buds from weak light 

The high yield depends on strong light reaching the canopy. Give it enough intensity and use training to open the plant up, or lower buds stay fluffy. 

Overwatering young plants 

A small plant in a big pot is easy to overwater. Water to root-zone moisture and let the medium dry between waterings, rather than watering on a fixed schedule. 

Harvesting by the calendar 

The 8-10 week window is a guide, not a cutting date. Read the trichomes and pistils before you cut, since phenotype and environment shift the timing. 

Making the Most of Your Harvest 

Do not waste the trim. The resinous sugar leaves make good bubble hash, dry sift, or infused oil that keeps the fruity-sour character. The stems, roots, and fan leaves compost well and feed your next grow. 

Is Red Dragon Right for You? 

If you want a balanced, easy-to-handle hybrid with an exotic fruity-sour flavor, strong yields, and a sociable creative-relaxing effect, yes. Its forgiving nature and manageable size make it a great photoperiod strain for a first proper grow, while the yield and quality keep experienced growers happy too. For more options, browse our full how-to-grow guide library. 

Frequently Asked Questions 

Is Red Dragon indica or sativa? 

Red Dragon is a balanced hybrid, listed at 55% indica and 45% sativa, from a Brazilian sativa crossed with Afghani (Pakistani Kush) indica. The effect reflects that balance: creative, euphoric, and happy up front, easing into a gentle relaxation. It works across the day for most people rather than being purely sedative. 

Does Red Dragon need a 12/12 light cycle? 

Yes. Red Dragon is a photoperiod strain, so indoors it needs a 12/12 light cycle to start and maintain flowering. Keep it on 18/6 during veg for as long as you want it to grow, then flip to 12/12 when it has the right size. Outdoors, shortening late-summer days trigger flowering naturally. 

How long does Red Dragon take to grow? 

Red Dragon flowers in 8 to 10 weeks once you switch to 12/12. Total seed-to-harvest time depends on your veg length, usually around 4 to 5 months indoors. Outdoors it finishes around early to mid October. Judge the finish by trichome maturity rather than the calendar. 

How much does Red Dragon yield? 

Red Dragon is a high yielder, producing around 600 g/m2 indoors and 600 to 800 g per plant outdoors. Strong light, a topped or SCROG canopy, and a healthy root zone are what turn that potential into real weight. Its manageable 1.2 m height makes those yields easy to manage in a standard tent. 

Is Red Dragon good for beginners? 

Yes. Blimburn lists it as suitable for beginners and experienced growers alike. Its manageable size, reasonable 8-10 week flowering, strong yield, and forgiving Afghani-influenced structure make it a practical first photoperiod grow. Topping and light training improve results but are not required to get a good harvest. 

Can you clone Red Dragon? 

Yes. As a photoperiod strain, Red Dragon 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 plant you like and run repeatable harvests without buying new seeds each time, which autoflowers cannot do. 

What does Red Dragon taste like? 

Red Dragon has a fruity, sour, and pungent profile, reflecting its exotic Brazilian and Afghani heritage. To protect those aromas, 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 sharp.