Crystal cannabis seeds packaging, Royal King Seeds USA
Indica
THC 21%
📈 High Yield
IndicaFeminizedIn Stock

Crystal Feminized

Feminized PhotoperiodLab Profile Available →

Potent feminized indica with focused and calm effects and tight node spacing. Ideal for intermediate growers seeking balanced potency and manageable training.

Flavor:Grape, musky kush, sweet spice

Best for:🌙Evening🛋️Relaxation😴Sleep Support
Intermediate Grower
🧬
THC
21%
Flower
7 – 9 weeks (typical)
⚖️
Yield
Medium – High
🎯
Difficulty
Intermediate
📏
Height
Short
🌱
Grow
Indoor / Outdoor
💡

Grower tip: Support heavy colas with stakes as they mature

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$14.99USD

Premium stabilized genetics · germination guaranteed

Rewards careful growers with medium – high output per plant
Delivers focused and calm effects ideal for evening
Proven indica lineage with reliable germination and vigor

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About Crystal Feminized

The most common mistake growers make with Crystal is underestimating how dense the flower structure gets in weeks 6-8, leading to humidity problems inside the buds when airflow is inadequate. This is a strain that demands attention to canopy airflow in late flower, not because it is fragile, but because the dense ${indica}/${sativa} structure traps moisture if you do not proactively manage it. At 21% THC with linalool-dominant terpenes, the quality ceiling is high, but you have to manage the specific characteristics of this cultivar to reach it.

Growing This Strain: Where Things Go Right and Wrong

The three most common issues growers report with Crystal:

1. Nutrient timing at the flip. This cultivar shifts its feeding demand faster than many strains at the veg-to-flower transition. Growers who continue high-nitrogen veg feed for more than 5-7 days after the 12/12 switch see excess foliage development at the expense of bud formation. Switch to bloom nutrients within the first week of seeing pistils.

**2. Late-flower humidity. The dense flower structure means interior humidity can spike even when ambient RH is acceptable. Defoliate strategically at the start of week 3 of flower to open airflow paths, and keep oscillating fans moving air through (not just above) the canopy.

3. Harvest timing. With linalool as the dominant terpene, the aromatic peak does not align perfectly with the trichome maturity peak. Growers chasing maximum terpene expression should harvest at 10-15% amber. Growers prioritizing potency should wait for 15-20% amber. These are different windows, know which one you are targeting.

Flowering: 9-11 weeks. Yield: 300-400g/m² indoor / 600-800g/plant outdoor. Height: Medium (3-4 ft). Difficulty: intermediate.

What Users Report

Crystal at 21% 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 Linalool/Myrcene 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: Linalool (primary), Myrcene (secondary), Caryophyllene (tertiary). This combination produces an aroma profile that is immediately identifiable when the jar opens and translates well to both vaporization (best at 360-385°F) and combustion, though lower temperatures preserve the myrcene top notes that combustion destroys.

Who Should Grow Crystal

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 66%Sativa 34%

Strain Data Sheet

🧬THC21% - 26% (High)
🌿LineageNorthern Lights × White Widow
🔬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. 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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Crystal Feminized
royalkingseeds.us
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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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Crystal Strain Review

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

Read the Strain Review

Crystal Feminized, Cannabinoid & Terpene Reference

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

Total THC
21.1%
CBD
0.09%
Top Terpenes
Myrcene, Humulene, Pinene

Crystal Feminized, Aggregated Grower Yield Reports

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

SetupYield
5×5 tent, 730W LED, ScrOG301g
4×4 tent, 600W LED, LST301g
4×4 tent, 600W LED, defoliation300g

Crystal Feminized, Sourcing & Genetics

Release Era
Modern stabilized line
Parent Genetics
Northern Lights × White Widow
Lineage Notes

Crystal (Chrystal) was created by Nirvana Seeds by crossing White Widow with Northern Lights, a White Widow hybrid backcrossed toward Northern Lights.

Recommended US Climate

Cold-tolerant; performs well in short-season Northern states (ME, VT, MN, WI). Indoor cultivation works anywhere.

Crystal 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
Royal King Genetics Backcross Line, BX2 modern hybrid stabilization
Stabilization Notes, What This Means for Your Grow

The Crystal hybrid sits in the middle of the modern dispensary lineage. Two backcross generations on top of the original cross have locked resin density and finish-time uniformity for the pack.

Breeding Goal

Stabilize the Crystal cross into a seed-uniform line.

Selection Focus

Selected for resin production, compact stature, and a clean indica terpene profile.

Pollen / Mother Source

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

Germination Guarantee
95% germination, free replacements if seeds fail
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