Passion #1 by Dutch Passion is a tall, vigorous, perfectly balanced old-school hybrid with XL yields and a bright citrus-fruity flavor. Built from a Californian Indica background, it is a feminized photoperiod plant with a 15-20% THC level, a citrus and fruity profile with herbal, piney notes, and a balanced effect that is both relaxing and energetic. It flowers fast in 7-9 weeks and grows big, which makes it a productive, reliable classic for growers with vertical space. 

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 the breeder’s values; check your own pack for the exact numbers. 

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Passion 1 Cannabis plant with dense green leaves and buds, growing in an outdoor field with blurred vegetation in the background.

Passion #1

THC THC 15% - 20% (Medium)
Lineage Lineage Californian Indica
Type Type Feminized
Height Height 8.2 ft | 2.5 m
Yield Yield High
Yield Indoor Yield Indoor 1.64 oz/ft² | 500 g/m²
Yield Outdoor Yield Outdoor 26.46 oz/plant | 750 g/plant
Flowering Time Flowering Time 7 - 9 weeks
Phenotype Phenotype 50% Indica / 50% Sativa
Effects Effects Relaxed, Energetic, Tingly, Uplifted
Flavors Flavors Citrus, Fruity
A dense Auto MAC 1 cannabis bud, covered in fine trichomes and orange hairs, sits prominently. Surrounding green and purple leaves accentuate the textured surface. "Dutch Passion Seed Company, Amsterdam, Since 1987" is noted.

Auto Mac #1

THC THC 20% - 25% (High)
Lineage Lineage Miracle Alien Cookies x Auto Think Different
Type Type Autoflowering
Height Height 3.28 ft | 1 m
Yield Yield Medium
Yield Indoor Yield Indoor 1.47 oz/ft² | 450 g/m²
Yield Outdoor Yield Outdoor 5.29 oz/plant | 150 g/plant
Life Cycle Life Cycle 10 - 12 weeks
Phenotype Phenotype 50% Indica / 50% Sativa
Effects Effects Relaxed, Uplifted, Focused
Flavors Flavors Citrus, Fruity, Diesel, Vanilla

Passion #1 Grow Info 

Trait Passion #1 (Dutch Passion) 
Genetics Californian Indica 
Seed type Feminized photoperiod 
Genetic profile 50% indica / 50% sativa 
THC 15-20% (medium) 
Flowering time 7-9 weeks 
Height Tall, around 2.5 m 
Indoor yield High, around 500 g/m² 
Outdoor yield XL, around 750 g per plant 
Effects Relaxed, energetic, uplifted 
Flavor Citrus, fruity 

These are Dutch Passion’s published figures for Passion #1 at Growlantis. When you need an exact THC percentage, height, or yield, check the specification on your own Passion #1 seed pack. 

What Makes Passion #1 Worth Growing 

Passion #1 is a dependable old-school classic. Its Californian Indica roots give it a bright citrus-fruity flavor with herbal, piney notes and a genuinely balanced effect, relaxing and energetic at once, at a comfortable 15-20% THC. It is an easy, enjoyable smoke rather than an overwhelming one, which is part of its long-standing appeal. 

Its biggest draw is production. It is a tall, vigorous plant that returns XL harvests, up to around 750 g per plant outdoors and a high 500 g/m² indoors, and it does so with a fast 7-9 week bloom. For a grower with vertical space and a warm season, it delivers a lot of flower for the effort. 

Is Passion #1 Indica or Sativa? 

Passion #1 is a perfectly balanced hybrid, listed at 50% indica and 50% sativa, from its Californian Indica lineage. 

That even split shows in the effect, which combines a relaxing body presence with an energetic, uplifting, slightly tingly lift, making it versatile across the day. The plant grows tall and vigorous with the structure of a classic old-school hybrid, so it needs real height management indoors but rewards it with volume. 

Flowering Time vs Full Grow Time 

Because Passion #1 is a photoperiod strain, these two numbers are separate, and mixing them up is the most common planning mistake. 

  • Flowering time: 7-9 weeks. This is the bloom stage, which starts only when you switch the lights to 12/12 indoors (or when days shorten outdoors). This is a fast bloom for such a big plant. 
  • Full grow time (seed to harvest): flowering plus however long you veg. Indoors, a typical grow runs around 4 months from seed, depending on veg length. 

The practical point: you control the total time by choosing your veg length, but keep veg shorter here because it grows tall and stretches. Outdoors, expect to finish around late September into early October. 

Does Passion #1 Need a 12/12 Light Cycle? 

Yes. Passion #1 is a photoperiod strain, so indoors it needs a 12/12 light cycle (12 hours on, 12 hours off) to start and maintain flowering. 

Because it is a tall, stretchy plant, flip timing matters. Keep veg shorter and flip to 12/12 while it is well under your height limit, since it stretches hard in flower. Outdoors, shortening late-summer days trigger flowering naturally. 

Passion #1 cannabis plant with resinous buds during flowering

Passion #1 Grow Timeline, Week by Week 

Treat this as a development pattern, not a fixed schedule, and keep veg shorter to control the stretch. 

  • Weeks 1-2: germination and seedling. The taproot and first true leaves establish. Keep humidity up and feeding minimal. 
  • Weeks 2-4: a shorter vegetative stage. Keep veg in check under 18/6 because of the big stretch. Start training early. 
  • Week 0 of flower: the flip. Switch to 12/12 while the plant is still well under your limit. 
  • Weeks 1-3 of flower: major stretch and bud set. Expect significant vertical growth before flower sites form. 
  • Weeks 4-7 of flower: bud development. Buds fill out and the citrus-fruity aroma builds. 
  • Weeks 7-9 of flower: ripening and harvest. Judge by trichomes, not the calendar. 

Choosing Your Setup: Space, Light and Pots 

Passion #1 is tall, around 2.5 m, with a big stretch, so vertical space and height control are the defining indoor challenges. Keep veg shorter, flip early, and use a SCROG net and low stress training to manage its size and even the canopy. It often suits a greenhouse or outdoors. 

Give it strong light to fill out its big frame. A full-spectrum LED at 30-40 watts per square foot over the flowering canopy keeps the colas developing. Add a good inline exhaust fan and a carbon filter. 

For pots, 5 gallon or larger containers suit this big plant, scaled up outdoors. 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 

With Passion #1, veg strategy is about controlling height. Keep the vegetative stage shorter under 18/6, because this tall plant stretches hard once you flip. 

Topping early is recommended to create multiple colas and a wider, lower profile rather than one giant central spire. Combine it with low stress training and a SCROG net to tame the stretch and expose more bud sites to light, spreading the XL yield. This is also the stage to take clones: cut from a healthy plant in veg to preserve a phenotype you like, since photoperiods clone reliably. Finish training before the flip. 

Feeding and Watering Passion #1 

Feed to the stage. Use a nitrogen-forward base through veg to fuel the vigorous growth, then move to a bloom formula higher in phosphorus and potassium once you flip to 12/12 and buds form. A big, high-yielding plant handles a solid feed, but start moderate and increase based on how the plant responds. 

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. A large plant drinks heavily, so monitor it. Fabric pots and this water-to-weight habit keep the roots healthy and prevent overwatering. 

Passion #1 cannabis plant growing indoors under LED lights

Flowering and Knowing When to Harvest 

Once you flip to 12/12, expect a big stretch, then buds fill out over the fast 7-9 week bloom. The bright citrus-fruity aroma with its herbal, piney edge develops, so keep air moving and run a carbon filter indoors. 

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 citrus flavor. 

Growing Indoors vs Outdoors 

Indoors, Passion #1 rewards growers who can manage its height. Keep veg shorter, flip early, train to a net, and the high 500 g/m² yield is very reachable under strong light, with a fast turnaround thanks to the short bloom. 

Outdoors is where it shines. In a warm, sunny climate with room, it reaches its full size and returns XL harvests of around 750 g per plant, usually finishing around late September into early October. Its fast bloom helps it finish before the wet autumn. Give it full sun, deep rich soil, and airflow around the buds. 

How Tall and How Much? Height and Yield 

Height is the main factor to plan around. Passion #1 reaches about 2.5 m with a big stretch, so indoors keep veg shorter, flip early, and train hard. Outdoors, give it full room. 

On yield it is an XL producer, listed as high at around 500 g/m² indoors and 750 g per plant outdoors. Strong light, a well-managed canopy, a long season outdoors, and a healthy root zone are what turn that big potential into real weight. 

Best US Climates for Passion #1 

Passion #1 does well in a warm, sunny climate, so growers in California, the Southwest, and warmer Western and Southern states can comfortably take it to a late-September-to-early-October finish outdoors, giving its tall frame room to produce XL harvests. Its fast 7-9 week flower also helps it finish before the wet autumn. 

In shorter-season or cooler states, grow it indoors or in a greenhouse where you control the environment and its height. In the humid Southeast, keep strong airflow around the buds to prevent rot. For more options, browse our full how-to-grow guide library. 

Common Problems When Growing Passion #1 

A few predictable issues are easy to head off. 

Running out of vertical space 

At around 2.5 m with a big stretch, it can outgrow an indoor space. Keep veg shorter, flip early, top, and train to a net, or grow it outdoors or in a greenhouse. 

Bud rot in a big canopy 

Dense buds on a large plant can trap moisture. Keep humidity moderate in late flower and strong airflow through the canopy, especially outdoors. 

Overfeeding 

A big plant is hungry but not limitless. Start moderate and increase based on the plant’s response, watching the leaf tips for nutrient burn. 

Harvesting by the calendar 

The 7-9 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 rosin that keeps the citrus-fruity character. The stems, roots, and fan leaves compost well and feed your next grow. 

Is Passion #1 Right for You? 

If you want a dependable, high-yielding old-school hybrid with a bright citrus flavor and a balanced effect, yes, as long as you can give it vertical space or grow it outdoors. Its XL yield, fast bloom, and easy balance make it rewarding. If you have very limited height or want maximum THC, look elsewhere. Browse our full how-to-grow guide library for more. 

Passion #1 cannabis plants flowering under indoor grow lights

Frequently Asked Questions 

Is Passion #1 indica or sativa? 

Passion #1 is a perfectly balanced hybrid, listed at 50% indica and 50% sativa, from its Californian Indica lineage. The effect combines a relaxing body presence with an energetic, uplifting, slightly tingly lift, making it versatile across the day. The plant grows tall and vigorous with the structure of a classic old-school hybrid, so it needs height management indoors. 

How long does Passion #1 take to flower? 

Passion #1 flowers in a fast 7 to 9 weeks once you switch to 12/12, quick for such a big plant. Total seed-to-harvest time depends on your veg length, usually around 4 months indoors. Outdoors it finishes around late September into early October. Judge the finish by trichome maturity rather than the calendar, since conditions shift it. 

Does Passion #1 need a 12/12 light cycle? 

Yes. Passion #1 is a photoperiod strain, so indoors it needs a 12/12 light cycle to start and maintain flowering. Because it is tall and stretchy, keep veg shorter and flip to 12/12 while it is well under your height limit. Outdoors, shortening late-summer days trigger flowering naturally. 

How much does Passion #1 yield? 

Passion #1 is an XL producer, listed as high at around 500 g/m2 indoors and 750 g per plant outdoors. Strong light, a well-managed canopy that controls its tall frame, a long outdoor season, and a healthy root zone are what turn that big potential into real weight of flower. 

How tall does Passion #1 grow? 

Passion #1 is a tall plant, reaching around 2.5 m with a big stretch after the flip. Indoors this makes height management the defining task: keep veg shorter, flip early, top the plant, and train to a SCROG net. For many growers it is better suited to a greenhouse or outdoors where it has room. 

How strong is Passion #1? 

Passion #1 is moderately potent at 15 to 20% THC, listed as medium. The effect is balanced, relaxing and energetic at once, which makes it an approachable, versatile smoke rather than an overwhelming one. Its bright citrus-fruity flavor and reliable XL yield are a big part of its long-standing old-school appeal. 

What does Passion #1 taste like? 

Passion #1 has a bright citrus and fruity flavor with herbal, piney notes from its Californian Indica lineage. To protect those terpenes, run a carbon filter in flower, dry slowly at around 60F with moderate humidity, and cure in sealed jars, burping daily for the first two weeks. A careful cure keeps the citrus-fruity character fresh and full.