Hybrid60% Indica / 40% Sativa20-26% THC

#1 Stunna

Also known as: #1 Stunna (Twisted Velvet x Rozay)

Breeder: Relentless Genetics

A color-forward indica-leaning hybrid prized for its signature berry fruit roll-up and Flintstone vitamin terpene profile inherited from the Rozay parent. Bred through multiple filial generations for consistency in color expression and terp retention, #1 Stunna has become a cornerstone of Relentless Genetics' breeding program. It offers vigorous growth, strong mold resistance, and heavy trichome production suitable for both flower and solventless extraction. #1 Stunna is a foundational breeding strain for Relentless Genetics, serving as the backbone for Queen of the South (Trop Cherry x #1 Stunna) and other well-known crosses. Now in its third generation (F3), the line has been progressively stabilized for color consistency, terpene expression, and structural uniformity. The breeder has identified the prized #43 phenotype for future feminized S1 production. The F2 generation is noted for wider phenotypic variation—10-15% of seedlings may express undesirable mutant/slow-grower traits, which is why packs include extra seeds. The main structural difference between #1 Stunna and its sibling line 5*Stunna (Rozay x Twisted Velvet x Rozay) is that Stunna branches out more and grows faster, making it preferred for commercial settings. Rozay-dominant phenotypes tend to run slightly shorter with larger flowers and longer flowering times, while Twisted Velvet-dominant phenos finish earlier and purple from the start.

Lineage

Twisted Velvet x Rozay

THC Range

20-26%

Flower Time

56-65 days (8-9 weeks)

Difficulty

Easy to Moderate

Lineage & Genetics

Cross: Twisted Velvet x Rozay

Rozay (Sunset Sherbet x Purple Bomb) contributes the signature berry fruit roll-up, red wine, and Flintstone vitamin terpene expression along with moderate potency and unique flavor depth. Twisted Velvet (Velvet Cookies x Purple Hulk, bred by In House Genetics) brings deep purple anthocyanin expression from early in flower, improved disease resistance against bud rot and powdery mildew, smooth smoke characteristics, and robust indica structure with open branching.

Terpene Profile

DOMINANT

Myrcene — Contributes body relaxation and an earthy, musky base that anchors the berry sweetness

SECONDARY

Limonene — Provides mood elevation and citrus brightness that lifts the fruit-forward profile

SECONDARY

Caryophyllene — Adds peppery, spicy depth with potential anti-inflammatory properties

Aroma: The nose is dominated by berry fruit roll-ups — a sweet, candy-fruit character that is the strain's signature. Underneath the berry candy sits a deep red wine quality, like fermented berries, accompanied by a distinctive Flintstone vitamin note that is sweet, chalky, and oddly addictive. Breaking apart the buds releases sweet cream and tropical funk. Some phenotypes lean toward candy diesel or gas-forward cake and spice. The overall impression is intensely sweet with surprising complexity.

Flavor: Juicy blend of fruit candy on the inhale with a creamy berry yogurt quality accented by bright tropical citrus. The exhale carries a faint earthy background that grounds the sweetness. Described as a creamy berry yogurt taste with a punch of bright tropical citrus — weird, wonderful, and distinctly memorable.

Effects & Experience

Onset: Quick-hitting euphoric cerebral lift upon exhale, clear-headed and uplifting without being racy.

Starts with a bright, energizing euphoria that enhances creativity and social conversation. As the high progresses, a smooth, relaxing body buzz settles in without heavy sedation. Delivers clarity, mood elevation, and chill vibes — balanced enough for any time of day. The body relaxation is present but never dragging.

Duration: Moderate, approximately 2-3 hours.

Commonly Reported Uses

Chronic stressChronic fatigueDepressionMood swingsChronic painNauseaHeadaches

Grower's Notes

Flower

56-65 days (8-9 weeks)

Indoor Yield

400-550 g/m²

Outdoor Yield

450-600 g/plant

Difficulty

Easy to Moderate

Height / Stretch

80-170 cm (short to medium, pheno-dependent)

Environment

Indoor, Outdoor, Greenhouse (hot, temperate,

#1 Stunna is a grower-friendly, color-forward cultivar that rewards both novice and experienced cultivators with vivid pink-to-purple coloration from early in flower, heavy trichome coverage, and a forgiving indica-dominant growth habit. Now in its F3 generation, the line has been stabilized for structural uniformity and consistent terp expression, making it a reliable choice for commercial canopy planning.

Growth Structure and Training

Phenotypic variation ranges from short, compact bushes to taller plants with moderate stretch during the flip — the breeder describes stretch as less than double, confirmed by grower journals showing substantial but manageable elongation in early flower. Tight node spacing during veg is consistent across phenotypes, producing multiple bud sites per branch. The indica-leaning architecture with minimal internodal spacing and sturdy stems responds exceptionally well to topping, LST, and SCROG setups. For commercial applications, the natural branching habit and uniform canopy development make this line preferred over Relentless' similar 5*Stunna, which runs shorter with less lateral spread.

Flowering Time and Harvest

Most phenotypes finish in 56 to 63 days, with Twisted Velvet-leaning expressions finishing fastest at 56 to 60 days and Rozay-dominant phenos pushing to 63 to 65 days with slightly larger flowers. The breeder confirms most plants are done in 8 to 9 weeks, consistently verified by seed bank data and grower reports. Neptune Seed Bank lists 60 to 65 days specifically for the F3 generation.

Nutrient Management

Documented grows have used Canna Terra nutrients, Power SI regular and bloom, fish sh!t, Recharge, Great White mycorrhizae, and Tribus Bloom delivered through a Blumat drip system. Power SI foliar feeds biweekly round out the feeding program. The strain is not a particularly demanding feeder and responds well to standard nutrient regimens across soil, coco, and hydro setups. Lost Coast Plant Therapy every three days through week 5 of veg provides effective IPM coverage.

Growing Media

This cultivar performs across a wide range of media types with documented successes in Fox Farm Ocean Forest in 6.6-gallon pots, coco-perlite blends at 70/30 with frequent fertigation, living soil builds, and standard peat-based mixes. The F3 generation shows improved uniformity regardless of chosen medium, making media selection more about grower preference and infrastructure than strain-specific requirements.

Environment and Climate

#1 Stunna performs well both indoors and outdoors, tolerating hot, temperate, and cool climates. Indoor growers should target standard VPD ranges and keep humidity below 50% from week 4 of flower onward, though the strain’s noted resistance to bud rot and powdery mildew provides a comfortable buffer. For outdoor cultivators in the Northern Hemisphere, harvest falls in early to mid-October.

Lighting

The strain handles high-intensity LED light well — one documented grow used an HLG 650R Spec Diablo with UVA supplement through the full cycle with excellent results. Standard 18/6 veg and 12/12 flower photoperiods apply. The heavy trichome production suggests the plant makes efficient use of available photon energy across the PAR spectrum.

Pest and Disease Resistance

Built-in resistance to bud rot and powdery mildew is a significant commercial advantage, confirmed by testers across indoor and outdoor environments. Documented IPM protocols include Lost Coast Plant Therapy as preventive through late veg — a sensible approach given the density of the flowers in late bloom. The strain’s structural resilience allows for confident cultivation in humid climates where many comparable cultivars would require more intensive mold management.

Yield

Indoor yields range from 400 to 550 g/m² depending on phenotype selection and training method, with outdoor plants capable of 450 to 600 grams per plant under optimal conditions. SCROG setups can push the upper end of the indoor range thanks to the strain’s natural branching and uniform canopy development.

Bud Structure and Trichomes

Buds run tight and dense with resin-drenched colas described as easy to trim and cure. The indica-dominant morphology produces chunky, stacking flowers rather than long, airy spears. Dense buds are generously coated with trichomes giving a frosty, sugary appearance, and bright orange pistils thread through the calyxes. The calyx-to-leaf ratio is favorable for efficient trimming.

Color Development

Color expression is the crown jewel of this line. Pink, red, and purple phenotypes dominate, with some plants coloring from the very beginning of flower while others transition around week 6. The F3 generation was specifically selected for early-onset coloration — the breeder notes that all mothers and fathers used to create the F3 were red, pink, or purple from the start of flower. The vivid colors contrast beautifully against dark purple and deep green base tones.

Drying and Curing

The tight, dense bud structure calls for standard low-and-slow drying protocols at 60°F and 55 to 60% RH for 10 to 14 days hang dry, followed by jar curing. The density of these flowers warrants extra attention to airflow during drying to prevent internal moisture pockets that could invite mold.

Wash and Extraction

No specific wash yield data has been published, but the strain’s heavy trichome coverage and resin performance branding from Relentless suggest strong potential for solventless extraction. Neptune Seed Bank specifically notes the F3 is flavorful enough to shine in solventless extraction. The dense, frosty bud structure with high calyx-to-leaf ratio should translate well to ice water hash processing.

History & Origin

First listed on the Relentless Genetics website on February 24, 2022, though breeding work predates the public listing. The development began when the breeder hunted through the Rozay line for a suitable male showing color and proper structure, then crossed it with In House Genetics' Twisted Velvet selected by Derrick. From 300 F1 seedlings, 5 special females were selected to create the F2 generation, with the primary criterion being Rozay's fruit roll-up/red wine/Flintstone vitamin terps. The F3 was created by selecting multiple males and females from the F2 that all showed the signature terps and were red/pink/purple from the start of flower. The prized #43 phenotype was identified for reversal to produce feminized S1 seeds. The strain quickly became a cornerstone of the Relentless Genetics breeding program. Strainly listings from March 2026 show the F3 available for $215 per pack of 10 regular seeds.

Notable Crosses

Strains bred using #1 Stunna as a parent:

Queen of the South— Tropicana Cherry x #1 Stunna

Queen of the South V2— Tropicana Cherry x #1 Stunna (second generation)

Stunna Runtz— Real Runtz Cut x #1 Stunna F2→

Trop Cherry Bx1— Trop Cherry x Queen of the South

5*Stunna— Rozay x (Twisted Velvet x Rozay)

Stunna Punch— Purple Punch x #1 Stunna (by NM Greenfire)

Frequently Asked Questions

6 common questions about #1 Stunna

What is #1 Stunna and what are its genetics?

#1 Stunna is a hybrid cannabis strain (60% Indica / 40% Sativa) bred by Relentless Genetics. It is a cross of Twisted Velvet x Rozay, testing at 20-26% THC. A color-forward indica-leaning hybrid prized for its signature berry fruit roll-up and Flintstone vitamin terpene profile inherited from the Rozay parent. Bred through multiple filial generations for consistency in color expression and terp retention, #1 Stunna has become a cornerstone of Relentless Genetics' breeding program.

What does #1 Stunna smell and taste like?

#1 Stunna's dominant terpenes are Myrcene. The aroma is described as the nose is dominated by berry fruit roll-ups — a sweet, candy-fruit character that is the strain's signature. underneath the berry candy sits a deep red wine quality, like fermented berries, accompanied by a distinctive flintstone vitamin note that is sweet, chalky, and oddly addictive. breaking apart the buds releases sweet cream and tropical funk. some phenotypes lean toward candy diesel or gas-forward cake and spice. the overall impression is intensely sweet with surprising complexity.. The flavor profile features juicy blend of fruit candy on the inhale with a creamy berry yogurt quality accented by bright tropical citrus. the exhale carries a faint earthy background that grounds the sweetness. described as a creamy berry yogurt taste with a punch of bright tropical citrus — weird, wonderful, and distinctly memorable..

What are the effects of #1 Stunna?

Quick-hitting euphoric cerebral lift upon exhale, clear-headed and uplifting without being racy. Starts with a bright, energizing euphoria that enhances creativity and social conversation. As the high progresses, a smooth, relaxing body buzz settles in without heavy sedation. Duration is typically moderate, approximately 2-3 hours.. Commonly reported uses include Chronic stress, Chronic fatigue, Depression, Mood swings.

How hard is #1 Stunna to grow?

#1 Stunna is rated easy to moderate difficulty. It flowers in 56-65 days (8-9 weeks), reaches 80-170 cm (short to medium, pheno-dependent) in height, and yields 400-550 g/m² indoors. Best suited for indoor, outdoor, greenhouse (hot, temperate, or cool climates) environments.

Does #1 Stunna turn purple?

Yes. #1 Stunna is known to express purple coloration, with reported colors including green, pink, red, purple. Cooler nighttime temperatures during late flowering typically intensify anthocyanin expression.

What strains were bred from #1 Stunna?

#1 Stunna has been used as a parent in several notable crosses, including Queen of the South, Queen of the South V2, Stunna Runtz, Trop Cherry Bx1, 5*Stunna. Its genetics contribute to a wide range of modern cultivars.

Sources & References (36)

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