Muul Fuel—frequently cataloged as Mule Fuel—is an intensely aromatic, indica-dominant cultivar originally developed by ThugPug Genetics through the pairing of GMO (Garlic Cookies) and Lurch. Celebrated for its unapologetic savory-gassy terpene signature, this cultivar carries sharp overtones of pungent fuel, roasted garlic, and damp earth. Designed for cultivators and connoisseurs who prioritize high volatile terpene loads and heavy trichome coverage, Muul Fuel delivers a distinctive, heavy-bodied profile.
Pungent diesel funk meets dense resin production in an elite GMO cross.
Derived from the potent cross of GMO and Lurch, Muul Fuel is tailored for growers seeking heavy resin production and distinct, volatile fuel-and-garlic aromas. Its robust indica morphology makes it a reliable staple for solventless extractors and flower connoisseurs alike.
Combines the legendary resin density of GMO with ThugPug's Lurch male.
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Loud Fuel Terpenes
Dominated by myrcene, caryophyllene, and limonene for a raw petrol and garlic nose.
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Potency Potential
Not confirmed.
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Resin Density
Exhibits thick trichome coverage well-suited for washing and dry extraction.
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Flowering Window
Completes its indoor photoperiod flowering cycle in approximately 56 to 65 days.
Strain Ancestry Editorial Score8.8/10
Very Good
Editorial assessment based on documented genetics, reported characteristics, cultivation information, and documentation confidence; not a laboratory measurement, customer-review rating, or product guarantee.
Terpene Pungency9.2/10
Intensely loud diesel, garlic, and damp earth aromas derived from high volatile concentrations.
Resin Potential9.5/10
Inherits heavy glandular trichome coverage from its GMO heritage, excellent for resin collection.
Visual Appeal8.5/10
Forms dense, frost-laden olive-green calyxes accented by dark purple bract margins.
Cultivation Accessibility8.2/10
Significantly shorter flowering window than pure GMO, though requiring standard canopy management.
Documentation Confidence8.6/10
Well-documented lineage and multi-market commercial laboratory data confirm primary cultivar traits.
Reported flower potentialCannabinoid Overview
THCNot confirmedMature flowers; not seed contentCBDNot confirmedMature flowers; not seed content
Reported cannabinoid values can vary by phenotype, environment, harvest timing, and testing method.
Genetic relationshipLineage Diagram
GMO (Garlic Cookies)
Lurch
Muul Fuel Cannabis Seeds
Reported aromatic compoundsTerpene Profile
Beta-Myrcene
Earthy, musky, herbal, damp forest
The primary terpene contributing deep earthy undertones and enhancing the heavy body profile associated with the cultivar.
Beta-Caryophyllene
Spicy, cracked black pepper, warm wood
A dietary cannabinoid-terpene that adds a sharp, peppery bite to the inhale and balances heavy fuel notes.
Limonene
Zesty citrus, pungent lemon rind, sharp solvent
Provides the tangy, solvent-like top note that cuts through the thick, savory background funk.
Alpha-Pinene
Fresh pine needle, resinous cedar, crisp herb
Contributes crisp pine accents that accentuate the volatile petrol nose on dried flower.
Cultivation referenceGrow Information
HeightMediumFlowering56–65 days (approx. 8–9 weeks)ClimateTemperate to warm climates with low relative humidity in late flowerDifficultyModerateYieldModerate to HighStretchModerate (1.5x to 2x stretch during early flower)IndoorWell-suitedOutdoorSuitable in warm, dry temperate climatesGreenhouseWell-suited
Essential cultivar details
Quick Facts
Key genetics, cultivation, and reported characteristics at a glance.
GeneticsGMO x Lurch
Breeder / OriginThugPug Genetics
Cultivar Typeindica-dominant hybrid
Seed TypeNot confirmed
PhotoperiodPhotoperiod
Reported THC PotentialNot confirmed
Reported CBD PotentialNot confirmed
Flowering Time56–65 days (approx. 8–9 weeks)
Plant HeightMedium
StretchModerate (1.5x to 2x stretch during early flower)
DifficultyModerate
Yield CharacteristicsModerate to High
Indoor SuitabilityWell-suited
Outdoor SuitabilitySuitable in warm, dry temperate climates
Greenhouse SuitabilityWell-suited
Climate PreferenceTemperate to warm climates with low relative humidity in late flower
Muul Fuel (also cataloged in legal markets and seed databases as Mule Fuel) is an indica-dominant hybrid cultivar developed by Michigan breeder Gromer Juana under the ThugPug Genetics banner. The variety was created by hybridizing the Chem/Cookies descendant GMO (Garlic Cookies) with Lurch, an in-house ThugPug male derived from Mendo Montage lineage. Not confirmed.
Genetics & Lineage
The genetic architecture of Muul Fuel is anchored by two prominent parents. The maternal contributor, GMO (a selected phenotype of Chemdawg x Girl Scout Cookies), is renowned throughout modern cannabis breeding for extreme resin head output, long internodes, and an intensely savory volatile profile featuring allium and diesel sulfur compounds. The paternal contributor, Lurch, was developed by ThugPug Genetics and brings tighter nodal spacing, structural rigidity, and a shortened flowering time to the cross. This combination retains GMO’s signature funk while providing a more manageable growth habit and earlier harvest maturity.
Breeder Background
ThugPug Genetics, helmed by Gromer Juana, gained widespread prominence in North American craft cannabis breeding for producing potent, resin-dense varieties often anchored by the famed Mendobreath F2 (Gromper) and related heritage lines. ThugPug selections such as Meat Breath, Peanut Butter Breath, and Mule Fuel established a distinct stylistic movement focused on rich savory profiles, loud gas, and exceptional trichome production suitable for solventless concentrate production. In regulated state markets, the cultivar has also been propagated and popularized under spelling variations like Muul Fuel by brand operations including Belushi’s Farm.
Botanical Characteristics
In vegetative and generative stages, Muul Fuel expresses classic indica-dominant morphological traits. Plants display sturdy central stalks, medium-thick lateral branches, and broad, deep-green fan leaves with defined serrations. Internodal spacing is medium—wider than traditional Afghani broadleaf types due to the Chemdawg influence, but noticeably more compact than pure GMO lines. When transitioning into generative bloom, the cultivar undergoes a moderate stretch of 1.5x to 2x before focusing energy into dense floral bracts characterized by high calyx-to-leaf ratios and an abundant coating of glandular trichomes.
Flower Structure
Cured mature flowers of Muul Fuel are chunky, conical to spade-shaped, and structurally solid. The calyxes stack closely along the stems, displaying a rich olive-green and deep forest-green palette often accented by faint lavender or aubergine hues when exposed to cooler nighttime temperatures during late flowering. The flower surface is enveloped in a greasy, opaque layer of resin heads, punctuated by vibrant burnt-orange to rust-colored stigmas.
Aroma & Flavor Profile
The sensory profile of Muul Fuel is defined by its loud, penetrating gas signature. On the initial nose, broken cured flowers release a wave of volatile chemical petrol, industrial diesel, and sulfurous garlic. Secondary undertones offer rich damp soil, cracked black pepper, and faint notes of tart citrus and pine. On the palate, the smoke or vapor translates directly into a heavy diesel flavor accompanied by savory allium funk, finishing with a lingering, tangy peppery earth on the exhale.
Cultivation Overview
Muul Fuel demonstrates good vegetative vigor and manageable structure, making it adaptable to varied cultivation systems. While individual phenotypes exhibit slight variation, the cultivar generally performs well with standard topping and low-stress training (LST) techniques to create an even, multi-top canopy. Its flowering cycle lasts approximately 56 to 65 days indoors, which is substantially faster than the 70+ days typically required by its GMO parent. Cultivators should ensure adequate airflow and odor filtration due to the cultivar’s dense bud morphology and exceptionally strong aroma emission during late bloom.
Indoor Considerations
Indoor growers benefit from employing Screen of Green (SCROG) or trellis netting to support developing colas as flower mass increases. Optimal indoor environments maintain day temperatures around 22°C–26°C (72°F–78°F) with relative humidity tapered down to 40%–45% during the final three weeks of flowering to protect dense colas from microclimate humidity spikes. High-efficiency carbon scrubbers are strongly recommended given the cultivar’s loud aromatic output.
Outdoor Considerations
When cultivated outdoors, Muul Fuel thrives in regions with warm, sunny summers and dry autumns. Because the flowers become quite dense toward maturity, growers in humid or rain-prone autumn regions should provide overhead protection or ensure open canopy airflow to prevent moisture entrapment. Outdoor harvest generally falls between late September and early October in the Northern Hemisphere.
Phenotype Variation
Phenotypic variation within seed batches generally centers on nodal stretch, bud density, and minor aromatic nuances. Most expressions lean heavily toward the savory garlic-diesel funk of GMO, with differences manifesting primarily in flower structure: some phenotypes express the slightly more elongated, bract-heavy structure of GMO, while others exhibit the tighter, rounder nugget structure inherited from the Lurch lineage.
Frequently Asked Questions
What is the genetic lineage of Muul Fuel?
Muul Fuel is an indica-dominant hybrid created by crossing GMO (Garlic Cookies) with Lurch, originally bred by ThugPug Genetics.
What is the reported mature-flower THC potential of Muul Fuel?
Not confirmed
How long does Muul Fuel take to flower indoors?
Muul Fuel typically completes its indoor flowering cycle within 56 to 65 days (approximately 8 to 9 weeks).
What does Muul Fuel smell and taste like?
Muul Fuel is recognized for an intensely pungent profile featuring heavy diesel fuel, raw petrol, roasted garlic, damp earth, and subtle citrus-pine accents.
Decision supportCompare Similar Genetics
Characteristic
Muul Fuel
GMO Cookies
Genetic Lineage
GMO x Lurch
Chemdawg x Girl Scout Cookies (Forum Cut)
Cultivar Type
Indica-dominant hybrid (~90% indica)
Indica-dominant hybrid (~90% indica)
Reported Flower THC Potential
19% to 26%
24% to 30%
Indoor Flowering Time
56–65 days (approx. 8–9 weeks)
70–80 days (approx. 10–11 weeks)
Primary Aroma Character
Pungent diesel, sharp petrol, earthy garlic
Rotten garlic, mushroom, savory diesel funk
Breeder / Origin
ThugPug Genetics
Mamiko Seeds / Skunkmasterflex
Comparison is informational and reflects reported cultivar-level data; phenotype and growing conditions can change results.
Ready to choose?
Add Heavy Fuel Terpenes to Your Botanical Collection
Muul Fuel stands out among contemporary indica hybrids by pairing the legendary resin density of GMO with the shortened flowering cycle and compact density of Lurch. Explore this uncompromisingly savory, gas-forward cultivar for your genetic library.
Cannabis cultivation laws vary widely by jurisdiction. All information presented is for educational and botanical preservation purposes. Germination of cannabis seeds may be restricted or prohibited in your region. Check and comply with all applicable local, state, and federal laws prior to purchase.
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5 Seeds, 10 Seeds, 25 Seeds
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