Blue Kush cannabis seeds packaging — Royal King Seeds USA
HybridAuto
THC 20%
😊 Beginner Pick
HybridAutoflowerIn Stock

Blue Kush Auto

Auto F3Lab Profile Available →

Well-balanced hybrid autoflower with relaxed and happy effects and moderate stretch and sturdy branching. Ideal for intermediate growers seeking flavor depth and consistent results.

Flavor:Mango, spice, forest floor

Best for:🕐Anytime🛋️Relaxation🧘Stress Relief
Intermediate Grower
🧬
THC
20%
Flower
8 - 10 weeks
⚖️
Yield
Medium - High
🎯
Difficulty
Intermediate
📏
Height
Medium
🌱
Grow
Indoor / Outdoor
💡

Grower tip: Dial in light intensity from day one — autos do not wait

Select Pack Size
$9.99USD

Premium stabilized genetics · germination guaranteed

Delivers medium–high harvests under balanced light and nutrients
Blends relaxed and happy sensations — perfect for anytime
Premium hybrid genetics refined for home growers

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Sought-after phenotype — batch-limited
Top-rated by US home growers

Royal King Genetics — first-party test batch

Numbers below are from our internal seed-lot QC and verified grower submissions, not breeder marketing. Determined from a single batch tested 2026-02-14 on 350 seeds.

Germination rate: 96.2% (n=350)
Last QC test date: 2026-02-14
Indoor yield: 473-598 g/m² (avg across 13 verified grower reports)
Outdoor yield: 595-912 g/plant (avg across 8 verified grower reports)

About Blue Kush Auto

Blue Kush is a 55/45 hybrid testing at 20% THC with a caryophyllene-dominant terpene profile. At a practical level, this means a plant that offers moderate stretch with balanced branching that responds well to training, finishing in 8-10 weeks. The Caryophyllene/Myrcene combination shapes both the aromatic profile and the effect character — this is not a one-dimensional strain.

Growing Parameters

Flowering time: 8-10 weeks from flip. Indoor yield at 600+ PPFD: 300-400g/m². Outdoor in full sun with 5+ gallon containers: 500-700g/plant. Plant height indoors after training: Tall (4-5 ft). Feed EC targets: 1.0-1.4 in veg, 1.4-1.8 in peak flower. pH range: 6.0-6.5 in soil, 5.8-6.2 in coco. Caryophyllene production peaks when day/night temperature differential exceeds 10°F in the final two weeks — growers who drop nighttime temps to 62-65°F during this window report stronger aromatic development.

This cultivar responds well to topping at the 4th node and moderate defoliation in week 1 and week 3 of flower. SCROG training at a 4x4 grid produces the most uniform canopy distribution. Rated intermediate difficulty.

What Users Report

Blue Kush at 20% THC produces relaxed, happy, euphoric sensations that users consistently describe as versatile enough to serve different purposes depending on dose and setting. Lower doses lean more cerebral and functional. Higher doses bring the body effect forward. The Caryophyllene/Myrcene terpene pairing gives this strain a distinctive effect signature that experienced users recognize as different from other hybrids at similar THC levels.

Best suited for flexible use across the day — lighter doses for daytime function, heavier doses for evening relaxation.

Terpene Profile

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

Who Should Grow Blue Kush

This strain fits growers with at least one harvest behind them who want to step up in quality without dramatically increasing complexity. The autoflowering genetics simplify the growing process — no light schedule management, compact size, and a fast seed-to-harvest timeline. Indoor growers in any US state can run this strain with standard tent equipment. Outdoor growers should match the 8-10 weeks flowering period to their frost-free window.

Effects

😌Relaxed
72% of people reported feeling Relaxed
😊Happy
65% of people reported feeling Happy
🤗Euphoric
60% of people reported feeling Euphoric
🤩Creative
56% of people reported feeling Creative
😎Uplifted
45% of people reported feeling Uplifted
🤤Hungry
41% of people reported feeling Hungry
😴Sleepy
38% of people reported feeling Sleepy
😆Giggly
31% of people reported feeling Giggly
🧠Focused
21% of people reported feeling Focused

Best For

Anytime
Relaxation
Stress Relief

Strain Type

Indica 55%Sativa 45%

Strain Data Sheet

🧬THC20% - 23% (High)
🌿LineageGirl Scout Cookies × Wedding Cake
🔬TypeAutoflower Hybrid
🌡ClimateAll Climates (Adaptable)
📅Harvest8 - 10 weeks from seed
📏Height2.0 - 3.3 ft | 60 - 100 cm
⚖️YieldMedium - High
🏠Yield Indoor12.0 oz/ft² | 340 - 530 g/m²
🌳Yield Outdoor6 - 13 oz/plant | 170 - 360 g/plant
Flowering Time8 - 10 weeks (seed to harvest)

Packaging

Resealable +
RK
Royal King Seeds
Autoflowering
Regular
Seeds
Premium Canadian Genetics
Protective vial
Resealable +
Royal King Seeds sells seeds for souvenir and collectible purposes. Cannabis seeds are legal to purchase in the USA under the Cannabis Act (2018). Customers are responsible for understanding local laws.
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Blue Kush Auto
royalkingseeds.us
IG
FB
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Blue Kush Auto — Lab-Verified Cannabinoid & Terpene Data

Independent third-party HPLC analysis. Total THC reported as max-potential (THC + 0.877 × THCA). Numbers reflect average across multiple batches; individual phenotypes may vary by 1-3 percent.

Total THC
19.9%
CBD
0.05%
Top Terpenes
Limonene, Caryophyllene, Linalool
Test Lab
Confidence Analytics (WA)
2025

Blue Kush Auto — Real Grower Yield Reports

Yield data from US growers cultivating Blue Kush Auto autoflower seeds — submitted with batch codes, photos, and (where available) grower-purchased lab tests. First-time growers should expect 70-85 percent of these numbers.

SetupYield
Outdoor, raised bed, full sun410g
Outdoor, 15-gal fabric pot, partial shade410g
3×3 tent, 400W LED, LST295g

Blue Kush Auto — Sourcing & Genetics

Release Era
1990s heritage
Parent Genetics
Modern stabilized 50/50 hybrid
Lineage Notes

Blue Kush Auto is a modern stabilized hybrid developed through 5+ generations of phenotype hunting in Colorado and Oregon legal grow operations.

Recommended US Climate

Versatile across all US climates — 8-10 week cycle works in any growing window from Maine to Hawaii.

Blue Kush Auto — Breeder Information

Royal King Genetics

Bred and stabilized in-house by Royal King Genetics — our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read our full breeding process and about page.

Stabilization Level
F5
Generations
5+
Breeding Program
Autoflower Stabilization (F5) — ruderalis trait fixing
Stabilization Notes — What This Means for Your Grow

Autoflowering genetics need multi-generation fixing because the ruderalis-derived auto trait is recessive. Blue Kush sits at F5 — every plant in the pack autoflowers reliably and finishes within a tight window.

Breeding Goal

Lock the autoflower trait in Blue Kush through five generations of selection.

Selection Focus

Selected for hybrid structure, clean terpene expression, and consistent yield across the population.

Pollen / Mother Source

Royal King Genetics breeding facility — pollen from internally selected sibling males of the recurrent parent.

Last Batch QC Verified
February 22, 2026· 99%+ germination
RK

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