Sour Stomper: The First "Frosty" Auto
Sour Stomper: The First "Frosty" Auto
Strain Overview
Type: Balanced Hybrid (50% Indica / 50% Sativa)
Breeder: Mephisto Genetics
Lineage: Grape Stomper OG (Gage Green Genetics) x Sour Crack F5
Market Status: A historic game-changer; the strain that proved autoflowers could have "photoperiod quality" bag appeal. A flagship Mephisto Artisanal strain.
THC Content: 20% – 24% (High)
Dominant Terpenes: Caryophyllene, Limonene, Humulene
Key Effects: Euphoric Uplift, "Feel-Good" Energy, Creative Flow, Gentle Body Relaxation
If you trace the timeline of the modern autoflower revolution, there is a clear "Before" and "After" Sour Stomper.
Released by Mephisto Genetics as one of their first "Artisanal" strains, Sour Stomper was the plant that silenced the critics. Before its arrival, autoflowers were largely seen as leafy, low-potency novelties. Sour Stomper changed the narrative overnight by producing buds that were denser, frostier, and tastier than most photoperiods on the shelf.
It is the mother of the legendary Double Grape and arguably the most important genetic in the Mephisto catalog. With a 50/50 hybrid split, it offers the perfect "lifestyle" high—energetic enough for a party, but relaxing enough for a movie—wrapped in a terpene profile of sweet grape candy and funky red wine.
History and Lineage: The Genetic Breakthrough
Sour Stomper was a deliberate attempt to bring "elite" photoperiod genetics into the auto format without losing quality.
The Mother (Grape Stomper OG): A legendary cut from Gage Green Genetics, famous for its "syrupy" grape smell and incredibly high resin production. It provided the flavor and the frost.
The Father (Sour Crack F5): One of Mephisto's fastest and most potent creations (Green Crack x 24 Carat). It was used to inject the autoflowering trait and the "Sour" speed.
The Selection: Mephisto spent four generations stabilizing this cross, selecting specifically for the "whiter than white" phenotype where the trichomes appear to stack on top of each other.
The Legacy: It is the genetic backbone of the modern "Frosty Auto." Without Sour Stomper, we likely wouldn't have the high-resin autoflowers we see today.
Terpene Profile: The Grape Funk
Sour Stomper has a distinct, mouth-watering aroma that is hard to mistake for anything else. It is sweet, savory, and loud.
Dominant Terpenes
Caryophyllene (The Funk): The dominant terpene, providing a deep, spicy, and almost "meaty" funk that grounds the sweetness.
Limonene (The Candy): Adds a sharp, sweet citrus note that, when combined with the other terpenes, creates the "artificial grape" smell.
Humulene (The Earth): A woody, hops-like note that gives the smoke a rich, full body.
Flavor Notes:
The Aroma: It smells like sour red wine, grape candy, and funky socks. It is a complex mix of sweet and savory.
The Smoke: incredibly smooth and expansive. It tastes of sweet grapes, pine, and floral perfume. It is a "lip-smacker" that leaves a sweet coating in the mouth.
Strain Effects: The Happy Hybrid
Sour Stomper is beloved because it is virtually impossible to have a "bad trip" on it. It is pure sunshine in plant form.
The Experience
The Glow: The high begins almost instantly with a warm, fuzzy feeling behind the eyes. It is euphoric and optimistic.
The Energy: Unlike heavy Indicas, Sour Stomper encourages movement. You might feel like dancing, cleaning, or walking. It is a very "social" buzz.
The Body: As the high progresses, a gentle wave of relaxation washes over the body. It soothes aches and pains without making you feel heavy or tired.
The Balance: It hits the perfect 50/50 sweet spot. You are stoned, but you are functional. You are relaxed, but you are awake.
Best For: Concerts, hiking, social gatherings, creative writing, and treating depression.
Growing Sour Stomper: The Frost Factory
This is an absolute joy to grow. It is fast, consistent, and visually spectacular.
Growth Structure
The Appearance: By week 5, the plant looks like it has been caught in a blizzard. The resin production is extreme. The leaves often fade to beautiful autumn colors (reds and purples) late in flower.
The Size: It is a medium-sized plant, typically reaching 70cm – 100cm. It has an open structure with long internodal spacing (from the Green Crack lineage), which makes trimming incredibly easy.
The Speed: It is a sprinter. It consistently finishes in 60 to 65 days from sprout.
The Yield: Moderate to High. While not a massive yielder like Hubbabubbasmelloscope, the density of the nugs makes up for it. Expect 100g+ per plant in optimal conditions.
The Smell: It is loud. By day 30, you will need a carbon filter. The grape funk permeates everything.
Grower’s Tip: Because the plant has an open structure and finishes so fast, do not top it. It doesn't need it. Just use some light Leaf Tucking to expose the lower bud sites. It handles nutrients well but doesn't need heavy feeding to produce elite results.
Final Verdict: The Certified Classic
Sour Stomper is a Hall of Fame strain. It is the plant that proved autoflowers had arrived. It offers a rare combination of bag appeal, incredible flavor, and a "feel-good" high that appeals to everyone from first-time smokers to seasoned veterans. If you are new to Mephisto Genetics, this is the best place to start. It is easy to grow, impossible to mess up, and produces flower that rivals the best photoperiods on earth.
You should choose Sour Stomper if:
You want top-tier bag appeal (Extreme Frost).
You love grape, wine, and sweet flavors.
You want a fast finish (65 days).
You are looking for a happy, balanced hybrid high.
Score: 9.8/10 (The Game Changer)