F 13
F-13 is a rare sativa-dominant hybrid (60-70% sativa) from legendary breeder DJ Short, crossing Blueberry and Flo. With THC levels of 15-26% and a complex terpene profile dominated by myrcene, caryophyllene, and limonene, this 1990s classic delivers euphoric, creative energy paired with gentle body relaxation. The flavor experience showcases blueberry, citrus, and vanilla notes with floral undertones. F-13 excels for creative projects, socializing, and daytime activities, offering uplifted mood and mental focus without heavy sedation.
The Short Answer
What kind of high is F 13?
Myrcene-led and sweet-berry on the palate, most often reported uplifted and picked for conversations.
Terpenes decide how a strain feels — THC% only decides how strong the dose is. Here is the family, the chemistry behind it, and what people reach for it to do.
Terpenes are the aromatic compounds that shape the character of a high. The blend a strain carries — not its THC percentage — is what makes one feel bright and social and another heavy and sleepy, which is why the top three are listed rather than just the leader.
Terpene percentages belong to the jar, not the strain. They move with harvest timing, drying, cure and shelf age — the lighter ones literally evaporate. What holds steady is which terpenes lead, so that is what we rank.
See the full profile →Learn how terpenes work →- Sedating
- Muscle relaxant
- Anti inflammatory
- Caryophyllene Spicy, peppery, woody
- Limonene Citrus, lemon, orange
Listed as reported — no measured order on file for this strain.
The effects reported most often across our research sources. Every body is different — set, setting and tolerance all move the result.
- Euphoric
- Energetic
The activities this strain gets picked for most often, leading with the specific ones rather than the broad buckets nearly every strain shares. A starting point, not a prescription — what works for you is personal.
See the full list →The flavor notes reported most often across our research sources, led by the most specific one — flavor tracks the terpene blend, but cure, age and how you consume it all shift what actually lands on the palate.
See the full profile →- Floral
The aroma notes reported most often across our research sources — what the jar gives up before you light it. This is the strain's own recorded profile, not the textbook aroma of its lead terpene.
See the full profile →- Floral
- Sweet
- Best Time anytime
- Era 1990s
- Rarity Rare
Genetics Sativa-Dominant Hybrid A lineage label, not an effects predictor — most modern flower is a hybrid, and the terpene mix above is what you will actually notice.
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 Most reported: dry mouth and dry eyes. Responses vary — start low, go slow. Review safety →
Your guided read
6 chapters on F 13
Start at the top and work down — each chapter builds on the one before it. Jump to any chapter to read it on its own.
- The Experience How this strain is reported to feel, and when people reach for it.
- Look, Aroma & Taste The smell and flavour you will actually notice — and the terpenes behind them.
- Chemistry & Research Therapeutic reports, published research, and what the lab numbers do — and do not — tell you.
- Using It Well Consumption methods that suit this strain, and the side effects to plan around.
- Where It Comes From The genetics, the breeders, and the recognition it has picked up along the way.
- The Full Story The long-form profile and community video reviews, once you want the detail.
Strain Highlights
Key insights at a glance
The Experience
Professor High Says...
In-depth strain breakdown from Professor High, our AI cannabis expert
Alright, I'm about three minutes into this F-13 experience and I need to document these sensations while my neurons are still firing in this beautifully chaotic pattern. The first thing that hits you is this wave of mental clarity—not the jittery, anxious kind, but rather like someone just adjusted the contrast settings on reality. Colors seem more vibrant, ideas connect in unexpected ways, and I'm finding myself genuinely fascinated by the patterns in my ceiling tiles.
The body high is surprisingly gentle considering the cerebral intensity—there's this warm, comfortable relaxation spreading through my shoulders and neck, melting away tension without anchoring me to the couch. It's the kind of physical comfort that makes you want to move, to create, to have those deep conversations about the universe with friends.
What's particularly interesting from a experiential standpoint is how the euphoria builds in waves. You'll feel uplifted and energized, then another gentle surge of happiness washes over you, bringing unexpected giggles and this profound appreciation for whatever you're doing in the moment. The DJ Short genetics really shine through—this is sophisticated cannabis that respects your ability to remain functional while elevating your consciousness to genuinely creative spaces.
Effects Profile
Uplifted · Euphoric · Energetic
Best enjoyed during anytime
Balanced for any time of day
Best For
Conversations · Hiking · Creative Projects
Effect Sources
- 1 F 13 Cannabis Strain: Unveiling the Secrets of this Exquisite Strain | Leafy Mate leafymate.com(opens in new tab)
- 2 F13: A Comprehensive Strain Guide - Blog - JointCommerce app.jointcommerce.com(opens in new tab)
- 3 F 13 Throwback Strain - Review & Info | AskGrowers askgrowers.com(opens in new tab)
- 4 F 13 - Strains - Last Hippies lasthippies.com(opens in new tab)
- 5 Cannabis Strain F 13 Hybrid THC Dominant strainslist.co.uk(opens in new tab)
- 6 F 13 Strain - Marijuana, Weed Seeds holimoli.com(opens in new tab)
- 7 F-13 kindgreenbuds.com(opens in new tab)
- 8 F 13 Weed Strain Review & Info | Weedstrain weedstrain.com(opens in new tab)
- 9 F-13 Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 10 F13 - Strain Information - CannaConnection cannaconnection.com(opens in new tab)
- 11 F-13 (DJ Short) :: Cannabis Strain Info seedfinder.eu(opens in new tab)
- 12 DJ Short F-13 - Higher Thought higherthought.guru(opens in new tab)
- 13 F13 Cannabis Seeds by DJ Short Seeds seed-city.com(opens in new tab)
- 14 DJ Short F13 | Get the Holy Grail of Potent 5-Star Sativa ... cannabis-seeds.co.uk(opens in new tab)
- 15 F-13 - Marijuana Strains - Ganjed ganjed.com(opens in new tab)
- 16 F13 Marijuana Strain | Growing Weed growingweed.com(opens in new tab)
- 17 F 13 Weed Strain Review & Info strains.uk(opens in new tab)
17 verified sources
Look, Aroma & Taste
Aroma & Flavor
Floral · Sweet · Berry
Aroma & Flavor Sources
- 1 F 13 Cannabis Strain: Unveiling the Secrets of this Exquisite Strain | Leafy Mate leafymate.com(opens in new tab)
- 2 F13: A Comprehensive Strain Guide - Blog - JointCommerce app.jointcommerce.com(opens in new tab)
- 3 F 13 Throwback Strain - Review & Info | AskGrowers askgrowers.com(opens in new tab)
- 4 F 13 Strain - Marijuana, Weed Seeds holimoli.com(opens in new tab)
- 5 F-13 kindgreenbuds.com(opens in new tab)
- 6 F 13 Weed Strain Review & Info | Weedstrain weedstrain.com(opens in new tab)
- 7 F-13 Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 8 F-13 (DJ Short) :: Cannabis Strain Info seedfinder.eu(opens in new tab)
- 9 DJ Short F13 | Get the Holy Grail of Potent 5-Star Sativa ... cannabis-seeds.co.uk(opens in new tab)
- 10 F-13 - Marijuana Strains - Ganjed ganjed.com(opens in new tab)
- 11 F13 Marijuana Strain | Growing Weed growingweed.com(opens in new tab)
- 12 F 13 Weed Strain Review & Info strains.uk(opens in new tab)
12 verified sources
Aromas
Flavors
Terpene Profile
Myrcene leads · 10 terpenes mapped
Terpene Sources
- 1 F13: A Comprehensive Strain Guide - Blog - JointCommerce app.jointcommerce.com(opens in new tab)
- 2 F 13 - Strains - Last Hippies lasthippies.com(opens in new tab)
- 3 F-13 kindgreenbuds.com(opens in new tab)
- 4 F-13 (DJ Short) :: Cannabis Strain Info seedfinder.eu(opens in new tab)
- 5 F13 Marijuana Strain | Growing Weed growingweed.com(opens in new tab)
5 verified sources
Secondary Terpenes
Appearance
Deep forest green · Purple undertones
Color Palette
Texture
Medium to dense bud structure with sativa-influenced elongation, sticky resin coating that releases pungent aromas when handled
Crystal Density
high
Heavy frost coating
Chemistry & Research
Medical Effects
10 reported therapeutic uses on file
Medical Effect Sources
- 1 F13: A Comprehensive Strain Guide - Blog - JointCommerce app.jointcommerce.com(opens in new tab)
- 2 Cannabis Strain F 13 Hybrid THC Dominant strainslist.co.uk(opens in new tab)
- 3 F 13 Weed Strain Review & Info | Weedstrain weedstrain.com(opens in new tab)
- 4 F-13 - Marijuana Strains - Ganjed ganjed.com(opens in new tab)
- 5 F13 Marijuana Strain | Growing Weed growingweed.com(opens in new tab)
- 6 F 13 Weed Strain Review & Info strains.uk(opens in new tab)
6 verified sources
Mental Effects
- •Stress Relief
Reduces stress and promotes emotional calm without sedation
- •Mood Elevation
Uplifts mood and promotes positive emotional state
- •Depression Management
Alleviates depressive symptoms and promotes mental clarity
- •Anxiety Relief
Reduces anxiety and nervous tension effectively
- •Mental Focus
Enhances creativity and mental focus for tasks
Professor High visualization
Body Effects
- •Pain Management
Reduces chronic pain and muscle tension effectively
- •Inflammation Reduction
Decreases inflammation and inflammatory responses
- •Migraine Relief
Alleviates migraine headaches and related symptoms
- •Nausea Relief
Reduces nausea and promotes appetite stimulation
- •Fatigue Management
Addresses fatigue while maintaining mental clarity
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.
What Research Says
Peer-reviewed studies, terpene science & safety guidance
What does the research say about F 13?
F 13 is a hybrid cannabis strain containing up to 26.0% THC, with a terpene profile dominated by Myrcene and Caryophyllene. This page currently has good data confidence. Below are profile sources when available plus authoritative resources for understanding the compounds in this strain.
Terpene Research
Cannabinoid Information
Cannabis Regulations & Safety
Educational resources only — not medical advice. Always consult a qualified clinician for health decisions.
Cannabinoids (THC & CBD)
THC 15-26% · Type I chemovar
THC% tells you how strong. Terpenes tell you how it feels.
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.
High THC (>15%), low CBD (<1%) - Most common recreational strains
Using It Well
Consumption Methods
Vaping · Smoking · Concentrates
Recommended Methods
Side Effects
Dry Mouth · Dry Eyes · +3 more
Side effects vary by individual. Start low, go slow. Consult a healthcare professional with concerns.
These are commonly reported effects. Individual experiences may vary based on dosage, tolerance, and consumption method.
Where It Comes From
Lineage & History
Blueberry × Flo · bred by DJ Short
Lineage Sources
- 1 F 13 Cannabis Strain: Unveiling the Secrets of this Exquisite Strain | Leafy Mate leafymate.com(opens in new tab)
- 2 F13: A Comprehensive Strain Guide - Blog - JointCommerce app.jointcommerce.com(opens in new tab)
- 3 F 13 Throwback Strain - Review & Info | AskGrowers askgrowers.com(opens in new tab)
- 4 Cannabis Strain F 13 Hybrid THC Dominant strainslist.co.uk(opens in new tab)
- 5 F 13 Strain - Marijuana, Weed Seeds holimoli.com(opens in new tab)
- 6 F-13 kindgreenbuds.com(opens in new tab)
- 7 F 13 Weed Strain Review & Info | Weedstrain weedstrain.com(opens in new tab)
- 8 F-13 Marijuana Strain Information & Reviews allbud.com(opens in new tab)
- 9 F13 - Strain Information - CannaConnection cannaconnection.com(opens in new tab)
- 10 F-13 (DJ Short) :: Cannabis Strain Info seedfinder.eu(opens in new tab)
- 11 DJ Short F-13 - Higher Thought higherthought.guru(opens in new tab)
- 12 F13 Cannabis Seeds by DJ Short Seeds seed-city.com(opens in new tab)
- 13 DJ Short F13 | Get the Holy Grail of Potent 5-Star Sativa ... cannabis-seeds.co.uk(opens in new tab)
- 14 F13 Marijuana Strain | Growing Weed growingweed.com(opens in new tab)
- 15 F 13 Weed Strain Review & Info strains.uk(opens in new tab)
15 verified sources
F-13 is a sativa-dominant hybrid created by DJ Short, resulting from crossing Blueberry and Flo (also known as Floral Line). The strain is known for its balanced genetics leaning toward sativa characteristics.
Origin Timeline
Originated in the 1990s
Breeder
DJ Short
Seed Bank
DJ Short
The Full Story
Detailed Description
The long-form profile · ~5 min read
A Legendary Sativa-Dominant Hybrid from Master Breeder DJ Short
F-13 stands as one of legendary breeder DJ Short's most celebrated creations, a sativa-dominant hybrid (60-70% sativa / 30-40% indica) that emerged from the creative cannabis breeding scene of the 1990s. Born from the union of two iconic strains—Blueberry and Flo (Floral Line)—F-13 represents the pinnacle of DJ Short's breeding philosophy: combining exceptional flavor profiles with uplifting, creative effects. Sometimes affectionately nicknamed "Thai-agra" by enthusiasts, this rare strain has maintained a devoted following among connoisseurs who seek its unique balance of mental stimulation and gentle physical relaxation.
🧬 Genetic Heritage & Lineage: A Marriage of Icons
F-13's genetic foundation tells a story of cannabis breeding excellence. The Blueberry parent contributes rich berry flavors and a touch of indica relaxation, while Flo (Floral Line) brings sativa-driven energy, floral aromatics, and cerebral effects. DJ Short, renowned for his work with Blueberry genetics throughout the 1970s-1990s, carefully selected these parents to create a strain that emphasizes euphoric uplift and creative energy while maintaining the complex flavor profiles he's famous for. This breeding resulted in a strain that leans decidedly sativa while preserving enough indica influence to provide balance and body comfort.
👃 Terpene Profile & Aromatics: A Complex Bouquet
F-13's terpene profile creates an intricate aromatic experience dominated by three major players. Myrcene (41%) provides the foundation with earthy, musky undertones and contributes to the strain's relaxing body effects. Caryophyllene (39%) adds spicy, peppery notes while offering anti-inflammatory potential through its unique ability to interact with CB2 receptors. Limonene (39%) rounds out the profile with bright citrus brightness and mood-elevating properties.
The aroma presents as a complex floral bouquet with layers of sweet berry, musky earthiness, and spicy sandalwood. You'll notice subtle notes of sage, vanilla, and even incense that create depth and intrigue. The scent profile evolves as you break apart the buds, releasing pungent, slightly skunky undertones beneath the sweeter top notes. This multi-dimensional aromatic experience reflects F-13's sophisticated genetic heritage.
👅 Flavor Experience: Berry-Forward Complexity
The flavor journey begins with blueberry and berry dominance on the inhale, immediately showcasing the Blueberry parent's influence. Mid-palate, you'll encounter citrus (particularly lemon) brightness from the limonene content, complemented by smooth vanilla and subtle spice notes. The floral characteristics become more pronounced as you exhale, leaving a sweet, slightly earthy aftertaste with hints of sandalwood and woody notes. Some users report detecting cola-like sweetness or even sage and herbaceous undertones in certain phenotypes. The overall experience is smooth, flavorful, and notably complex—perfect for those who appreciate nuanced cannabis flavors.
🎯 Effects & Experience: Uplifting Creative Energy
F-13 delivers a distinctly sativa-leaning experience that begins with rapid onset—typically within 5-10 minutes. The initial wave brings euphoric mental clarity and uplifted mood that radiates outward from your consciousness. You'll feel energetic yet focused, creative yet coherent—an ideal headspace for artistic endeavors, engaging conversations, or tackling projects that benefit from fresh perspectives.
The mental effects dominate, producing happiness, giggly social energy, and enhanced talkativeness that makes this strain excellent for social settings. Some users report mild psychedelic or perception-enhancing qualities at higher doses. Despite the sativa dominance, the indica lineage provides gentle body relaxation that prevents overstimulation, creating a balanced experience that remains functional and clear-headed.
With THC levels ranging from 15-26% and modest CBD content (0.49-2%), F-13 offers moderate to potent effects depending on the phenotype. The experience typically peaks around 30-60 minutes and gradually transitions into a mellow, pleasant comedown over 2-4 hours without significant sedation.
🎮 Use Cases & Activities: Versatile Anytime Strain
F-13 excels in situations requiring creative thinking, social engagement, and mental focus. The strain pairs beautifully with creative projects—writing, painting, music-making, or any artistic pursuit benefits from the enhanced perception and idea flow. The talkative, giggly effects make it perfect for socializing at gatherings, parties, or intimate conversations with friends.
The energetic yet balanced nature allows for daytime activities without couch-lock, making it suitable for outdoor adventures, exercise, or productive work sessions. The focused mental state supports conversation and intellectual pursuits, while the uplifted mood transforms routine tasks into more enjoyable experiences.
💚 Medical & Therapeutic Potential
F-13 may help address various wellness concerns, particularly those affecting mental and emotional well-being. The uplifting terpene profile and cannabinoid content may provide relief for stress, anxiety, and depression by promoting mood elevation and mental clarity. The creative, focused effects may benefit those managing ADD/ADHD or fatigue.
Physically, the caryophyllene content may help with inflammation, chronic pain, and migraines, while myrcene contributes muscle relaxation. Some users report relief from nausea and appetite stimulation. The balanced nature makes it potentially useful for bipolar disorder management, though consumers should always start with low doses and consult healthcare providers for serious conditions.
👁️ Visual Characteristics: Colorful, Resin-Coated Beauty
F-13 buds display medium to dense structure with sativa-influenced elongation. The flowers showcase deep forest green primary coloration often accented by purple undertones inherited from the Blueberry lineage. Fiery orange to rust-colored pistils weave throughout the bud structure, creating vibrant contrast against the green backdrop.
Trichome coverage ranges from medium to high density, giving quality examples a frosty, crystalline appearance that speaks to the strain's potency. The resin production creates a sticky texture that releases pungent aromas when handled. Well-cultivated F-13 displays the visual appeal expected from DJ Short genetics.
📜 Cultural Context & Availability
As a rare strain from a legendary breeder, F-13 holds special status among cannabis connoisseurs and collectors. Its 1990s origins place it among the classic strains that helped define modern cannabis breeding. The "Thai-agra" nickname hints at reported aphrodisiac qualities some users experience.
Availability remains limited, with F-13 appearing primarily at specialty dispensaries or through dedicated seed banks carrying DJ Short genetics. This rarity makes encountering authentic F-13 a special experience for enthusiasts seeking heritage genetics with proven performance.
⚠️ Consumer Considerations
F-13 suits intermediate to experienced consumers who appreciate sativa-dominant effects and complex flavor profiles. Beginners should start with lower doses due to the potential for psychedelic effects at higher THC percentages. The social, energetic nature makes it less suitable for those seeking heavy sedation or evening relaxation. Common side effects include dry mouth and dry eyes—staying hydrated is essential. The uplifting effects may cause anxiety or paranoia in sensitive individuals, particularly at higher doses.
Research Methodology
How we compiled this strain profile
This strain profile was compiled from 20 published sources covering 'F 13'. Our research pipeline cross-references these sources and reports how strongly they agree — see the confidence breakdown below.
Data Quality by Section
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Strain Highlights
Key insights at a glance
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