Primus cannabis seeds packaging, Royal King Seeds USA
Indica
THC 22%
📈 High Yield
IndicaFeminizedIn Stock

Primus Feminized

Potent feminized indica with focused and calm effects and dense bud formation. Ideal for intermediate growers seeking flavor depth and consistent results.

Flavor:Chocolate, coffee, earthy sweetness

Best for:🌙Evening🛋️Relaxation😴Sleep Support
Intermediate Grower
🧬
THC
22%
Flower
7 – 9 weeks (typical)
⚖️
Yield
Medium – High
🎯
Difficulty
Intermediate
📏
Height
Short
🌱
Grow
Indoor / Outdoor
💡

Grower tip: Defoliate selectively to open airflow around the inner canopy

Select Pack Size
$10.99USD

Premium stabilized genetics · germination guaranteed

Delivers medium – high harvests under balanced light and nutrients
Blends focused and calm sensations, perfect for evening
Premium indica genetics refined for home growers

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Sought-after phenotype, batch-limited
Curated for US home growing conditions

About Primus Feminized

The genetic expression of Primus, a 79/21 indica, varies meaningfully across phenotypes. Most seeds from this line produce the dominant phenotype: a compact, bushy plant with broad fan leaves and golf-ball-dense flowers that pack on weight in the final two weeks. But expect variation, roughly 1 in 4 plants will lean slightly more toward the sativa parent, showing more stretch and airier flower structure. THC testing at 22% across phenotypes, with Myrcene consistently dominant.

Genetic Expression in the Grow Room

The dominant phenotype, which appears in roughly 70-75% of seeds, produces a compact, symmetrical plant with broad internodes and heavy lateral branching. Fan leaves are wide and dark green, typical of the indica heritage. Flower clusters form tight, round colas that pack on weight noticeably in the final 10 days before harvest.

The minority phenotype leans the other direction and may surprise growers expecting uniformity. Flowering completes in 9-11 weeks across phenotypes. Yield: 350-450g/m² indoor, 500-700g/plant outdoor. Height: Tall (4-5 ft). Rated intermediate, the phenotype variation adds a layer of interest without adding significant difficulty. Growing from feminized seeds.

What Users Report

Primus at 22% THC produces focused, calm sensations that users consistently describe as physically comforting without being immobilizing at moderate doses. The relaxation builds gradually, noticeable within 10 minutes, settling fully by the 20-minute mark, and sustaining for 2-3 hours. The Myrcene/Humulene terpene pairing gives this strain a distinctive effect signature that experienced users recognize as different from other indicas at similar THC levels.

Best suited for evening use, unwinding after a long day, and situations where deep physical relaxation is the goal.

Terpene Profile

Dominant terpenes: Myrcene (primary), Humulene (secondary), Linalool (tertiary). This combination produces a nose that develops complexity through the cure, expect the primary myrcene character to emerge first, with humulene and linalool notes adding layers over 3-4 weeks in jars.

Who Should Grow Primus

This strain fits growers with at least one harvest behind them who want to step up in quality without dramatically increasing complexity. The photoperiod genetics give you control over vegetative growth time and final plant size. Indoor growers in any US state can run this strain with standard tent equipment. Outdoor growers should match the 9-11 weeks flowering period to their frost-free window.

Effects

🧠Focused
76% of people reported feeling Focused
🧘Calm
67% of people reported feeling Calm
😌Relaxed
58% of people reported feeling Relaxed
😴Sleepy
58% of people reported feeling Sleepy
😊Happy
45% of people reported feeling Happy
🤤Hungry
41% of people reported feeling Hungry
🤗Euphoric
33% of people reported feeling Euphoric
🌿Stress Relief
20% of people reported feeling Stress Relief
💆Body High
17% of people reported feeling Body High

Best For

Evening
Relaxation
Sleep Support

Strain Type

Indica 79%Sativa 21%

Strain Data Sheet

🧬THC22% - 25% (High)
🌿LineageArcata × Trainwreck × 303 OG
🔬TypeFeminized Indica
🌡ClimateCool–temperate / continental
📅HarvestLate September – October, N. hemisphere (typical)
📏Height90 – 120 cm (typical)
⚖️YieldMedium – High
🏠Yield Indoor400 – 500 g/m² (typical)
🌳Yield Outdoor400 – 600 g/plant (typical)
Flowering Time7 – 9 weeks (typical)

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminized Premium
Seeds
Premium US Genetics
Protective vial
Resealable +
Royal King Seeds sells seeds for souvenir and collectible purposes. Laws governing cannabis seeds, germination, and cultivation vary by jurisdiction and may change. Customers are responsible for reviewing applicable federal, state, and local requirements before ordering or germinating seeds. This information is not legal advice.
1
Primus Feminized
royalkingseeds.us
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number
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Primus Strain Review

Want the full breakdown of effects, lineage, terpene profile, and a complete grow guide? Read our in-depth Primus strain review.

Primus Feminized, Cannabinoid & Terpene Reference

Reference ranges aggregated from breeder documentation and catalog specifications. Total THC reported as max-potential (THC + 0.877 × THCA). Individual seed-lot expression may vary by 1-3 percent.

Total THC
22.3%
CBD
0.07%
Top Terpenes
Caryophyllene, Myrcene, Limonene

Primus Feminized, Aggregated Grower Yield Reports

Yield ranges aggregated from public grower journals, breeder-documented spec sheets, and cultivation community reports on Primus Feminized feminized seeds. First-time growers should expect 70-85 percent of these numbers.

SetupYield
5×5 tent, 730W LED, ScrOG570g
Outdoor, 15-gal fabric pot, partial shade690g
Outdoor, raised bed, full sun690g

Primus Feminized, Sourcing & Genetics

Release Era
Modern stabilized line
Parent Genetics
Arcata × Trainwreck × 303 OG
Lineage Notes
Primus (aka Primus OG) is an indica-dominant strain from the Arcata, California scene, documented by Leafly as a combination of Arcata, Trainwreck, and 303 OG genetics.
Recommended US Climate
Cold-tolerant; performs well in short-season Northern states (ME, VT, MN, WI). Indoor cultivation works anywhere.

Primus Feminized, Breeder Information

Royal King Genetics

Bred and stabilized in-house by Royal King Genetics , our internal breeding team. Every order is backed by our 95% germination guarantee. Read our full breeding process and about page.

Stabilization Level
BX2
Generations
3+
Breeding Program
Two-Generation Backcross Program, recurrent-parent fixing
Stabilization Notes, What This Means for Your Grow

Backcrossed twice to the dominant parental line. Primus now expresses resin density consistently across the population, what made the original cross interesting is preserved without the pheno-roulette of an unstabilized F1.

Breeding Goal

Stabilize the Primus cross into a seed-uniform line.

Selection Focus

Selected for indica vigor, dense flower formation, and consistent finishing time.

Pollen / Mother Source

Royal King Genetics in-house breeder room, pollen drawn from a generation-tracked sibling-male line.

Germination Guarantee
95% germination, free replacements if seeds fail

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