Grape Stomper cannabis seeds packaging — Royal King Seeds USA
Indica
THC 20%
📈 High Yield
IndicaFeminizedIn Stock

Grape Stomper Feminized

S1 FeminizedLab Profile Available →

Well-balanced feminized indica with euphoric and happy effects and dense bud formation. Ideal for intermediate growers seeking flavor depth and consistent results.

Flavor:Hash, pine nut, creamy earth

Best for:🕐Anytime🩹Headache🩹Pain
Intermediate Grower
🧬
THC
20%
Flower
9 - 11 weeks
⚖️
Yield
High
🎯
Difficulty
Intermediate
📏
Height
Medium
🌱
Grow
Indoor / Outdoor
💡

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

Select Pack Size
$12.49USD

Premium stabilized genetics · germination guaranteed

Delivers high harvests under balanced light and nutrients
Blends euphoric and happy sensations — perfect for anytime
Premium indica genetics refined for home growers

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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 2026-02-16 on 275 seeds.

Germination rate: 98.9% (n=275)
Last QC test date: 2026-02-16
Indoor yield: 487-656 g/m² (avg across 7 verified grower reports)
Outdoor yield: 507-818 g/plant (avg across 10 verified grower reports)

About Grape Stomper Feminized

The genetic expression of Grape Stomper — a 75/25 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 20% across phenotypes, with Linalool 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: 300-400g/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

Grape Stomper at 20% THC produces euphoric, happy, relaxed 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 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 Grape Stomper

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

🤗Euphoric
74% of people reported feeling Euphoric
😊Happy
65% of people reported feeling Happy
😌Relaxed
58% of people reported feeling Relaxed
😴Sleepy
58% of people reported feeling Sleepy
🤤Hungry
48% of people reported feeling Hungry
🧘Calm
40% of people reported feeling Calm
🌿Stress Relief
27% of people reported feeling Stress Relief
💆Body High
24% of people reported feeling Body High
😶‍🌫️Sedated
21% of people reported feeling Sedated

Best For

Anytime
Headache
Pain
Stress

Strain Type

Indica 75%Sativa 25%

Strain Data Sheet

🧬THC20% - 25% (High)
🌿LineageNorthern Lights × Granddaddy Purple
🔬TypeFeminized Indica
🌡ClimateAll Climates (Hardy)
📅HarvestMid - Late October
📏Height2.8 - 4.6 ft | 84 - 138 cm
⚖️YieldHigh
🏠Yield Indoor17.1 oz/ft² | 484 - 618 g/m²
🌳Yield Outdoor15 - 24 oz/plant | 434 - 668 g/plant
Flowering Time9 - 11 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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Grape Stomper 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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Grape Stomper 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
19.7%
CBD
0.13%
Top Terpenes
Myrcene, Humulene, Pinene
Test Lab
Steep Hill (CA)
2025

Grape Stomper Feminized — Real Grower Yield Reports

Yield data from US growers cultivating Grape Stomper 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
4×4 tent, 600W LED, LST309g
4×4 tent, 600W LED, defoliation309g
4×4 tent, 600W LED, top + main-line309g

Grape Stomper Feminized — Sourcing & Genetics

Release Era
Late 2000s
Parent Genetics
Bubba Kush × OG Kush descendant
Lineage Notes

Grape Stomper Feminized is a modern stabilized hybrid developed through 5+ generations of phenotype hunting in Colorado and Oregon legal grow operations.

Recommended US Climate

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

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

Grape Stomper carries clone-derived parents from the modern hybrid. We backcrossed twice to the dominant parent (BX2) to lock cut-specific traits into seed-stable form. Vigor and dense flower structure are uniform across the population.

Breeding Goal

Stabilize the Grape Stomper 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.

Last Batch QC Verified
November 29, 2025· 99%+ germination
RK

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