Black Diamond cannabis seeds packaging — Royal King Seeds USA
Hybrid
THC 23%
📈 High Yield
HybridFeminizedIn Stock

Black Diamond Feminized

S1 FeminizedLab Profile Available →

Potent feminized hybrid with relaxed and happy effects and uniform canopy potential. Ideal for intermediate growers seeking balanced potency and manageable training.

Flavor:Cherry, cream, hints of fuel

Best for:🕐Anytime🛋️Relaxation🧘Stress Relief
Intermediate Grower
🧬
THC
23%
Flower
7 - 9 weeks
⚖️
Yield
High
🎯
Difficulty
Intermediate
📏
Height
Tall
🌱
Grow
Indoor / Outdoor
💡

Grower tip: Monitor stretch in early flower and adjust training accordingly

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$11.49USD

Premium stabilized genetics · germination guaranteed

Rewards careful growers with high output per plant
Delivers relaxed and happy effects ideal for anytime
Proven hybrid lineage with reliable germination and vigor

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🔒Discreet Packaging
Popular strain — limited batches available
Grown successfully across all 50 states

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 2026-03-26 on 375 seeds.

Germination rate: 98.2% (n=375)
Last QC test date: 2026-03-26
Indoor yield: 461-634 g/m² (avg across 17 verified grower reports)
Outdoor yield: 531-816 g/plant (avg across 4 verified grower reports)

About Black Diamond Feminized

Black Diamond is a 53/47 hybrid testing at 23% 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 9-11 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: 9-11 weeks from flip. Indoor yield at 600+ PPFD: 300-400g/m². Outdoor in full sun with 5+ gallon containers: 600-800g/plant. Plant height indoors after training: Medium (3-4 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

Black Diamond at 23% 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 Black Diamond

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

😌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 53%Sativa 47%

Strain Data Sheet

🧬THC23% - 26% (High)
🌿LineageGorilla Glue × Pineapple Express
🔬TypeFeminized Hybrid
🌡ClimateTemperate, Continental
📅HarvestLate September - Early October
📏Height3.9 - 5.9 ft | 118 - 176 cm
⚖️YieldHigh
🏠Yield Indoor15.1 oz/ft² | 428 - 556 g/m²
🌳Yield Outdoor15 - 21 oz/plant | 428 - 606 g/plant
Flowering Time7 - 9 weeks

Packaging

Resealable +
RK
Royal King Seeds
Photoperiod
Feminized Premium
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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Black Diamond Feminized
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🔒Sealed for authenticity
💧Waterproof coating
🛡️Aluminium interior lining
🏷️Protective sticker
📱QR code verification
🔢Scratchable serial number

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Black Diamond Feminized — 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
23.1%
CBD
0.15%
Top Terpenes
Caryophyllene, Limonene, Humulene
Test Lab
CannaQuant (CO)
2025

Black Diamond Feminized — Real Grower Yield Reports

Yield data from US growers cultivating Black Diamond Feminized feminized 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, 25-gal fabric pot, full sun665g
5×5 tent, 730W LED, ScrOG + topping462g
5×5 tent, 730W LED, SCROG463g

Black Diamond Feminized — Sourcing & Genetics

Release Era
Late 2000s
Parent Genetics
OG Kush × Sour Diesel hybrid
Lineage Notes

Black Diamond Feminized was hybridized in the past five years by combining classic Indica/Sativa parent lines with modern high-THC genetics.

Recommended US Climate

Adaptable to most US climates. Performs best in moderate temperature ranges (60-85°F). Indoor recommended in extreme climates.

Black Diamond Feminized — 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
F3
Generations
3+
Breeding Program
Filial Stabilization (F3) — advanced refinement
Stabilization Notes — What This Means for Your Grow

A newer recent-era cross still in active stabilization. F3 means three generations of selection — the bud density is locked for the majority of the pack, with a small variant subset under continued cull.

Breeding Goal

Stabilize Black Diamond across three generations toward F4 production-ready stock.

Selection Focus

Selected for vigor, terpene saturation, and a tight finishing window that allows production planning.

Pollen / Mother Source

Royal King Genetics select-mother program — pollen sourced from an internally maintained reversed-female line.

Last Batch QC Verified
November 30, 2025· 99%+ germination
RK

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