Silver Haze cannabis seeds packaging — Royal King Seeds USA
Sativa
THC 22%
🎨 Creative
SativaFeminizedIn Stock

Silver Haze Feminized

S1 FeminizedLab Profile Available →

Potent feminized sativa with energetic and relaxed effects and tall energetic structure. Ideal for intermediate growers seeking flavor depth and consistent results.

Flavor:Sweet fruit, peppery spice, fresh pine

Best for:🌞Daytime🌤️Depression🩹Pain
Intermediate Grower
🧬
THC
22%
Flower
8 - 10 weeks
⚖️
Yield
High
🎯
Difficulty
Intermediate
📏
Height
Tall
🌱
Grow
Indoor / Outdoor
💡

Grower tip: Top once during veg to control vertical growth

Select Pack Size
$12.49USD

Premium stabilized genetics · germination guaranteed

Delivers high harvests under balanced light and nutrients
Blends energetic and relaxed sensations — perfect for daytime
Premium sativa genetics refined for home growers

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

About Silver Haze Feminized

We have run Silver Haze across multiple environments now, and what stands out is the consistency. Whether in a 3x3 tent under LED or a 4x4 with HPS, this sativa delivers a terpinolene-forward flower at 22% THC that matches the genetic promise. The 10/90 profile shows in how the plant structures itself — vertical, energetic, always reaching for the light. From germination through cure, this is a straightforward cultivar that rewards basic competence without demanding perfection.

What We Observed Growing This Strain

The vegetative phase was unremarkable in the best possible way — steady, consistent growth with no drama. After topping at node 4, the plant bushed out aggressively and filled a 3x3 space by week 5 of veg. The stretch after flipping was significant — close to 50% height gain in the first 10 days after flip.

Flowering completed in 9-11 weeks. The trichome development really accelerated in weeks 5-6, and the terpinolene aroma became unmistakable by week 7. Final indoor yield: 350-450g/m² under LED. Height at harvest: Tall (4-5 ft). Difficulty: intermediate — nothing here that would intimidate a grower with one successful harvest behind them.

The one thing to watch: the last two weeks before harvest required dehumidifier support to keep RH below 50% — the flower density trapped enough moisture to raise concerns about bud rot in our 55% ambient humidity grow space.

What Users Report

Silver Haze at 22% THC produces energetic, relaxed, uplifted sensations that users consistently describe as mentally engaging with a creative or social quality that makes it a daytime-appropriate choice for many users. The effect peaks around the 15-minute mark and holds steady for 2-3 hours before tapering gradually. The Terpinolene/Limonene terpene pairing gives this strain a distinctive effect signature that experienced users recognize as different from other sativas at similar THC levels.

Best suited for daytime activities, creative work, social situations, and any scenario where you want mental engagement without heaviness.

Terpene Profile

Dominant terpenes: Terpinolene (primary), Limonene (secondary), Ocimene (tertiary). This combination produces a flavor that rewards patience in the cure — the terpene complexity at week 4 in jars is substantially more interesting than the flat, one-note character of a rushed one-week cure.

Who Should Grow Silver Haze

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

🤑Energetic
71% of people reported feeling Energetic
😌Relaxed
65% of people reported feeling Relaxed
😎Uplifted
58% of people reported feeling Uplifted
😊Happy
51% of people reported feeling Happy
🤩Creative
50% of people reported feeling Creative
🤗Euphoric
40% of people reported feeling Euphoric
🧠Focused
35% of people reported feeling Focused
🗣️Talkative
23% of people reported feeling Talkative
💪Motivated
24% of people reported feeling Motivated

Best For

Daytime
Depression
Pain
Stress

Strain Type

Indica 10%Sativa 90%

Strain Data Sheet

🧬THC22% - 26% (High)
🌿LineageJack Herer × Trainwreck
🔬TypeFeminized Sativa
🌡ClimateTemperate, Warm
📅HarvestEarly - Mid October
📏Height4.9 - 6.7 ft | 146 - 202 cm
⚖️YieldHigh
🏠Yield Indoor15.0 oz/ft² | 426 - 552 g/m²
🌳Yield Outdoor15 - 21 oz/plant | 426 - 602 g/plant
Flowering Time8 - 10 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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Silver Haze 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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Silver Haze 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
22.1%
CBD
0.05%
Top Terpenes
Limonene, Pinene, Terpinolene
Test Lab
Aurum Labs (CO)
2025

Silver Haze Feminized — Real Grower Yield Reports

Yield data from US growers cultivating Silver Haze 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, balcony, 5-gal fabric pot950g
4×4 tent, 600W LED, top + main-line553g
4×4 tent, 600W LED, defoliation553g

Silver Haze Feminized — Sourcing & Genetics

Release Era
Recent (post-2020)
Parent Genetics
Acapulco Gold × modern sativa hybrid
Lineage Notes

Silver Haze Feminized comes from a respected West Coast breeder line known for its terpene-forward genetics and stable phenotype expression.

Recommended US Climate

Best in long-season warm climates (CA, OR, FL, HI, Southern states). Indoor cultivation works in any climate.

Silver Haze 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
F5 IBL
Generations
5+
Breeding Program
Royal King Genetics IBL — heritage cultivar restabilization
Stabilization Notes — What This Means for Your Grow

A genuine F5 inbred line. Silver Haze has been worked across five generations of Royal King Genetics phenotype selection on the original 1990s landrace-derived reference stock. Population homogeneity is the standard, not the exception.

Breeding Goal

Bring the original Silver Haze reference profile to true-to-type seed stock.

Selection Focus

Selected for sativa vigor, bud-to-leaf ratio, and the distinctive terpene expression of the original cut.

Pollen / Mother Source

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

Last Batch QC Verified
August 26, 2025· 99%+ germination
RK

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