Strain experience guide

303 Kush

Also known as 303 OG, 303, 303 OG Kush

303 Kush is a legendary Colorado indica-dominant hybrid (60/40) crossing Chemdawg with Pre-98 Bubba Kush. Bred by Zombo, this Myrcene-rich strain delivers earthy, diesel-coffee flavors alongside deeply relaxing, euphoric effects perfect for evening unwind sessions, stress relief, and restful sleep. Read more Show less

Quick Hits

What kind of high is 303 Kush?

An indica-dominant hybrid reported as relaxed, sleepy and happy. Picked for sleep & bedtime and stress relief in the evening. The profile features earthy coffee flavor, pungent diesel aroma and myrcene as the lead terpene.

High Family
Relaxing High
Deep Body Relaxation
Dominant Terpenes
Myrcene
Smells Earthy, musky, fruity
  • Pinene Pine, fresh forest
  • Linalool Floral, lavender, sweet

Ordered by measured share — the exact percentages shift with every batch and cure.

How It Feels
Relaxed
  • Sleepy
  • Happy
Best For
Smells Like
Pungent diesel
  • Earthy
  • Spicy
Tastes Like
Earthy coffee
Reported note
  • Best Time Evening
  • Era 2000
  • Rarity Common

Genetics Indica-Dominant Hybrid A guide to lineage, not a reliable predictor of the high.

Potency Check the label, not the strain Varies by batch, grower and harvest — check the label on the product you are buying. Scan your label → Reported ranges →

Heads up Reported: dry mouth and dry eyes. Responses vary — start low, go slow. Review safety →

Worth knowing

The details that shape the experience

This strain has its own song — hit play, read along, and chill out.

303 Kush Soundtrack

AI-generated for this strain

Stoner Rock74 BPMC minor
0:002:59

Verse

Chorus

Verse

Chorus

Outro

The memorable details

  1. Classic Colorado indica cross of Chemdawg and Pre-98 Bubba Kush, bred by Zombo
  2. Myrcene-dominant terpene profile delivers deep relaxation with earthy diesel-coffee flavor
  3. Award-winning genetics recognized for potency and terpene yield at Grow Off 2018
  4. Perfect evening companion for stress relief, social unwinding, and restful sleep
Explore the full profile Complete experience record Relaxed · Sleepy · Happy

Mind, body, and energy

Relaxed Sleepy Happy Euphoric

Best enjoyed during evening

Wind down and relax

Activities people choose it for

Therapeutic reports

Mental Effects

55 %
  • •
    Anxiety Relief

    Reduces anxious thoughts and promotes calm mental state

  • •
    Stress Management

    Alleviates stress and racing thoughts effectively

  • •
    Depression Relief

    Elevates mood and combats depressive symptoms

  • •
    PTSD Support

    Helps manage trauma-related anxiety and intrusive thoughts

Professor High showing Anxiety Relief and Pain Relief effects
Anxiety Relief Pain Relief

Professor High visualization

Body Effects

45 %
  • •
    Pain Management

    Reduces chronic pain and muscle tension significantly

  • •
    Sleep Support

    Promotes deep sleep and reduces insomnia

  • •
    Appetite Stimulation

    Increases hunger and supports weight management

  • •
    Anti-Inflammatory

    Reduces inflammation and related discomfort

  • •
    Seizure Management

    Helps control seizures and neurological activity

Medical Disclaimer: This information is AI-generated based on available research and user reports, provided for educational purposes only, and is not intended as medical advice. Cannabis affects everyone differently. Consult with a qualified healthcare professional before using cannabis for medical purposes. Do not use cannabis if pregnant, nursing, or have a medical condition without consulting your doctor.

Side effects and safer use

Side effects vary by individual. Start low, go slow. Consult a healthcare professional with concerns.

Dry Mouth
Dry Eyes
Dizziness
Drowsiness
Anxiety

These are commonly reported effects. Individual experiences may vary based on dosage, tolerance, and consumption method.

Keep listening Music neighborhood Follow 303 Kush into Relaxing High music

Sound neighborhood

Follow 303 Kush into Relaxing High music.

TIWIH classifies this strain within the Relaxing High chemistry pattern. Separately, our editorial music map associates the same family with these sounds. It is a creative bridge—not a prediction or artist endorsement.

Open the jar

Aroma, flavor, and chemistry

Look closer Full sensory specimen Earthy · Pungent · Spicy

Aroma and flavor

Aromas

Earthy
Pungent
Spicy
Diesel

Flavors

Earthy
Coffee

Terpene profile

Total Terpene Content: 2.00% (High)

Terpene Distribution

Terpene profile: Myrcene 0.6%, Pinene 0.4%, Linalool 0.4%, Caryophyllene 0.3%, Limonene 0.2%, Humulene 0.1% .

Myrcene Dominant

Flavor: Earthy, musky, fruity

Sedating Muscle relaxant Anti-inflammatory

Full Profile

Myrcene
0.6%
Pinene
0.4%
Linalool
0.36%
Caryophyllene
0.3%
Limonene
0.2%
Humulene
0.14%

Appearance

Color Palette

deep forest green
olive green
dark purple undertones
fiery orange pistils
amber trichomes
golden resin

Texture

Dense, chunky indica-style buds with a sticky resinous coating that clings to fingers when handled

Crystal Density

high

Heavy frost coating

Batch context Complete cannabinoid record THC 12.07-25% · Type I chemovar

There’s more to a strain than THC%.

THC percentage is a property of the product in your hand, not of the strain. It shifts with the batch, the grower, the harvest, and how the flower was cured and stored — the same strain can test several points apart from two different jars.

Treat the ranges below as market context for what to expect on a shelf — then read the actual label on the product you are buying, and use the terpene profile to judge how it will feel.

Type I THC-Dominant

High THC (>15%), low CBD (<1%) - Most common recreational strains

Reported THC Range
12.07-25%
Professor High

03 · AI interpretation

Professor High interprets the pattern

Ahh, this one hits like a warm blanket of fuel-soaked earth. The first exhale rolls out that diesel-coffee combo across your tongue, and within minutes I feel my shoulders drop about three inches. There's a bright flash of euphoric happiness first—my thoughts get playful, almost giggly—before the Myrcene really kicks the door open and I sink deeper into the couch. My eyelids get heavy but my mind stays pleasantly present, cycling through creative little thought loops before mellowing out completely. This is the kind of high that makes conversations feel easy and unhurried, then gently escorts you toward sleep without a fight. Pure indica comfort with just enough spark up front to keep it interesting before the sedation takes the wheel.

Read this as an interpretation of the profile—not clinical advice, a product rating, or a guarantee.

Learn more with AI

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Go deeper

The helpful detail

Meet 303 Kush: Colorado's Legendary Indica

Named after Denver's iconic 303 area code, 303 Kush (also known as 303 OG or 303 OG Kush) has earned its reputation as one of Colorado's most cherished indica-dominant strains. Bred by Zombo and distributed through The Bank Genetics seed bank in the 2000s, this strain carries a heavy-hitting legacy that continues to command respect among cannabis connoisseurs who crave deep relaxation paired with genuine euphoria.

🧬 Genetic Heritage & Lineage

303 Kush results from crossing two legendary genetics: Chemdawg and Pre-98 Bubba Kush. This pairing creates a 60% Indica / 40% Sativa hybrid classified as a Type II chemovar, meaning it delivers a balanced THC-to-terpene interaction. Chemdawg contributes its pungent, fuel-forward genetics and cerebral punch, while Pre-98 Bubba Kush lends its signature body-melting relaxation and earthy depth. The result is a strain that bridges the gap between heavy-duty nighttime indicas and more nuanced hybrid experiences.

👃 Terpene Profile & Aromatics

Lab testing confirms Myrcene as the dominant terpene (0.6%), setting the stage for that classic sedating, couch-lock foundation. Pinene (0.4%) adds a sharp, alert edge that keeps the high from feeling too foggy, while Caryophyllene (0.3%) brings peppery warmth and its signature CB2-receptor interaction known for soothing physical discomfort. Rounding out the profile, Linalool (0.36%) contributes floral calm, and Humulene (0.14%) adds subtle earthiness. Together, these terpenes create a complex bouquet of earthy, pungent, woody, diesel, and coffee notes, with underlying hints of spicy, citrus, pine, and floral accents that make each inhale an evolving experience.

👅 Flavor Experience

Your first inhale delivers bold diesel and earthy coffee notes reminiscent of freshly ground beans mixed with fuel. As the smoke settles on your palate, woody and spicy undertones emerge, followed by a smooth pine and herbal finish. Some phenotypes reveal subtle chocolate and nutty notes on the exhale, rounding out a flavor journey that's as layered as its genetic lineage.

🎯 Effects & Experience

303 Kush's effects unfold in stages. The onset brings a wave of euphoric happiness and social warmth, often accompanied by bursts of creativity and focus. As Myrcene and the indica genetics take hold, you'll settle into deep relaxation, with sleepiness creeping in during the later stages. This makes it a strain that transitions beautifully from an engaged, uplifted afternoon into a heavy-eyed, restful evening.

🎮 Use Cases & Activities

This strain excels during evening wind-down sessions, social gatherings where mellow conversation flows easily, and dedicated relaxation or sleep prep routines. Its body-forward relief also makes it a solid companion for stress management after a long day.

💚 Medical & Therapeutic Potential

Users commonly report that 303 Kush may help ease anxious thoughts, manage stress, and elevate mood. On the physical side, its Myrcene-Caryophyllene combination may support pain relief, muscle tension release, and improved sleep quality, while also potentially stimulating appetite.

👁️ Visual Characteristics

Expect dense, chunky indica-style buds wrapped in deep forest green with hints of olive and purple undertones. Fiery orange pistils weave through the trichome-frosted surface, which shimmers under light thanks to heavy resin coverage.

🏆 Awards & Recognition

303 Kush concentrates took 1st Place for Best U.S. Concentrates in 2014, and the strain earned additional recognition at the 2018 Grow Off Awards for its potency and terpene yields.

📜 Cultural Context & Consumer Considerations

Deeply tied to Colorado's cannabis culture, 303 Kush remains commonly available and beloved by both newcomers and veteran indica lovers. First-timers should start slow given THC levels that can climb toward 25%, and be prepared for possible dry mouth, dry eyes, or dizziness.

Practical guide How people use it Smoking · Vaping · Concentrates

Recommended Methods

Smoking
Vaping
Concentrates
Edibles
Where it comes from Origins and lineage Chemdawg × Pre-98 Bubba Kush · bred by Zombo

303 Kush is a cross between Chemdawg and Pre-98 Bubba Kush, known for its potent indica-dominant effects and complex flavor profile.

Origin Timeline

First cultivated in 2000

Breeder

Zombo

Seed Bank

The Bank Genetics

On the record Awards and recognition 2 awards & mentions

Competition Wins

Won awards in the Grow Off for their potency and terpene yields
Grow Off • 2018
View Source (opens in new tab) ↗
1st Place for Best U.S. Concentrates
2014
View Source (opens in new tab) ↗
Watch Reviews and videos Community video reviews

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Evidence and limits

Research notes

This profile assembles public facts in original language, links its supporting sources, and keeps gaps or disagreements visible. It is research provenance—not product or lab certification.

Linked sources
16
Sourced sections
9
Claims under review
90
Profile updated
Sep 14, 2026
Research Edition

Current profile edition

Updated September 14, 2026 · 9 profile areas with section-level sourcing
Featured research profile

This edition records This Is Why I'm High’s synthesis of published information about 303 Kush. It describes source-supported patterns and uncertainty; it does not certify genetics, potency, safety, or any product batch.

Profile sources
16
Research evidence confidence
71%
Edition date
September 14, 2026

Evidence confidence summarizes source coverage and consistency for this profile synthesis. It is not a product rating, potency score, or guarantee about any batch.

Source coverage in this edition

  • Classification 16 sources
  • Lineage 15 sources
  • Cannabinoids 12 sources
  • Terpenes 10 sources
  • Reported effects 15 sources
  • Aromas 13 sources
  • Flavors 14 sources
  • Reported medical uses 15 sources
  • Awards 2 sources

History tracking is active

Material changes are recorded as new editions using factual categories and source metadata. Source article prose and reviews are not copied into the history.

Research context What published research says Peer-reviewed studies, terpene science & safety guidance

What does the research say about 303 Kush?

303 Kush is a indica cannabis strain containing up to 25.0% THC, with a terpene profile dominated by Myrcene and Pinene. This page currently has good data confidence. Below are profile sources when available plus authoritative resources for understanding the compounds in this strain.

Educational resources only — not medical advice. Always consult a qualified clinician for health decisions.

Power-user detail Open sources and methodology 16 linked sources with section-level provenance

Research Methodology

How we compiled this strain profile

71%
Data Confidence

This strain profile was compiled from 16 published sources covering '303 Kush'. Our research pipeline cross-references these sources and reports how strongly they agree — see the confidence breakdown below.

Data Quality by Section

Terpenes Medium (10 sources)
Effects Low (15 sources)
Lineage Medium (15 sources)
Medical Low (15 sources)
Aromas Low (13 sources)
Cannabinoids Low (12 sources)
Last updated: September 14, 2026

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