The Star Dust Chronicles: A Deep-Dive Genealogy of Greenpoint Seeds’ Star Dawg F2 Projects

Executive Preface: The Alchemy of the I-95 Corridor

In the pantheon of cannabis genetics, few lineages command the reverence, the controversy, and the sheer narcotic gravity of the Chemdog dynasty. It is a bloodline that does not merely exist within the market; it defines the market. From the dank basements of the 1990s East Coast to the glistening dispensaries of modern Colorado, the “Chem” DNA has served as the backbone for the global shift toward high-potency, gas-forward poly-hybrids.

This report serves as an exhaustive, genealogical dissection of a specific, pivotal moment in this history: the Star Dawg F2 projects conducted by Greenpoint Seeds. Specifically, we analyze the genetic recombination of the Star Dawg (Kate Upton Male) with two of the most legendary female phenotypes in existence: the Corey Haim cut and the Guava cut.

This is not a simple strain review. This is a forensic reconstruction of a breeding event. By synthesizing historical records, phenotypic data, and the lore of the “I-95 Corridor,” we will explore how Greenpoint Seeds utilized a specific male genotype—the structural anomaly known as “Kate Upton”—to mine the recessive depths of JJ NYC’s original Star Dawg masterpiece.

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1. The Genesis: Archaeology of the Dog

To understand the Star Dawg F2, one must first understand the primordial soup from which it crawled. The story does not begin in a laboratory, but in the gravel parking lot of the Deer Creek Music Center in Indiana, June 1991.

1.1 The Immaculate Conception

The lore is now scripture: a young Greg “Chemdog” Krzanowski purchased a pound of “Dog Bud” (so named because it made the smoker roll over like a dog) from two travelers known as Joe Brand and P-Bud. Within this pound, thirteen seeds were found—seeds that would become the Eve mitochondria of the modern gas varieties. This genetic material, likely a chaotic mix of Thai Sativa, Nepali Temple Hash plant, and perhaps Pakistani Kush, possessed a terpene profile that had never been seen before: a volatile cocktail of skunk spray, industrial solvent, and burnt rubber.

The eventual propagation of these seeds birthed the Chemdog 91, the Chemdog Sister, and the Chemdog D. But it was the fourth seed, popped years later during a reunion of the original crew, that would become the Chemdog 4—the maternal anchor of the Star Dawg lineage.

1.2 The Chem 4: The “Reunion” Matriarch

The Chemdog 4 is the anomaly of the original sisters. While the Chem 91 and Chem D are known for their pure, offensive funk and smaller, dense nug structure, the Chem 4 is a leviathan. It is the “heavy yielder” of the family, known for producing massive, forearm-sized colas that often require heavy staking to prevent the branches from snapping under their own weight.

Organoleptically, the Chem 4 shifts the profile from “roadkill skunk” to “industrial cleaner.” It is dominated by a sharp, ammonia-rich lemon-pine note—akin to Pine-Sol poured over a mechanic’s rag. This specific chemical profile is crucial because it provides the Sativa-leaning chassis upon which the Star Dawg was built. It brings the soaring, cerebral rush that pierces through the heavy body stone, a trait that Greenpoint Seeds would later seek to stabilize in their Guava F2 project.

1.3 The Tres Dawg: The Stabilizing Father

To preserve these volatile genetics, JJ NYC of Top Dawg Seeds created Tres Dawg. He took the Chemdog D clone and crossed it with an Afghani #1 male, then backcrossed the progeny twice to lock in the Chem traits.

The introduction of the Afghani #1 is the silent engine of the entire lineage. The Afghani genetics did three critical things:

1. Reduced Flowering Time: Taming the 10+ week Chem flowering cycle down to a manageable 8-9 weeks.
2. Structural Integrity: Adding woody, fibrous strength to the floppy, vine-like Chem stems.
3. Flavor Modulation: Introducing deep, roasted notes—coffee, chocolate, and damp earth—that ground the high-frequency citrus/fuel notes of the Chem.

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2. The Star Dawg F1: The “I-95” Phenomenon

When JJ NYC crossed the Chemdog 4 mother with the Tres Dawg father, Star Dawg was born. Named after the song “Stardog Champion” by Mother Love Bone, and referencing the “stars” (trichomes) that coated the buds, this F1 hybrid became the defining strain of the early 2010s.

The F1 release was a “genetic shotgun blast.” Because it was a poly-hybrid of unstable parents, the offspring varied wildly. Pheno-hunters across the globe popped these seeds and discovered specific “cuts” that were so distinct they earned their own names. The most significant among them were the Guava, the Corey Haim, and the Kate Upton.

It is here that Greenpoint Seeds enters the narrative. While Top Dawg Seeds moved on to other projects, Greenpoint identified the immense value in preserving and exploring the specific genotypic combinations found within the Star Dawg gene pool. They initiated the “Wild West Series,” a breeding program designed to use a specific Star Dawg male to pollinate elite clone-only females.

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3. The Male Donor: The “Kate Upton” Phenotype

The linchpin of this entire analysis—and the specific focus of the user’s inquiry—is the male plant used by Greenpoint Seeds. This was not just any random Star Dawg male; it was a male selected for the traits of the “Kate Upton” phenotype.

3.1 Why “Kate Upton”? The Morphology of Desire

In the nomenclature of underground cannabis breeding, phenotypes are often named after celebrities to evoke a specific feeling or visual trait. The Kate Upton cut was named for a simple, albeit crude, reason: it was statuesque, curvy, and undeniably beautiful.

Historically, Chemdog plants are “ugly.” They grow lanky, stretch uncontrollably, and have low bag appeal until they are manicured. The Kate Upton phenotype was the genetic correction to this flaw.

• Structure: Unlike the vine-like Chem 4, the Kate Upton phenotype (and the male selected to represent it) grows with a robust, stocky frame. It stacks colas densely, creating a “full figure” plant that yields heavily without needing a net to hold it up.
• The “Purple” Recessive: This is the most critical differentiator. The Kate Upton cut is known as the “Purple Pheno” of the Star Dawg line. It possesses a recessive allele for anthocyanin production, allowing it to turn deep lavender and violet late in flower—a trait almost non-existent in the original green-dominant Chem lines.

3.2 The Greenpoint Strategy: “The Stud”

Greenpoint Seeds selected a male that expressed these Kate Upton traits to be the sire of their F2 generation. By using this male, they were not just preserving the Star Dawg line; they were attempting to inject bag appeal and structural integrity into it.

As noted in breeding logs, the Greenpoint Star Dawg male “is great because its genetics enhance the selected female structurally and productively, without changing it much in terps or flavor”. This is the definition of a perfect breeding stud: it improves the chassis (the body) without painting over the engine (the potency/terpenes).

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4. Case Study I: Star Dawg (Corey Haim) x Star Dawg (Kate Upton Male)

Market Identity: Star Dawg F2 (The Potency Line)
Genetic Architecture: 50% Chem 4 / 50% Tres Dawg (Recombined for Potency & Structure)

This cross represents the collision of two opposing forces: the unbridled, ugly potency of the Corey Haim cut and the refined, aesthetic structure of the Kate Upton male.

4.1 The “Corey Haim” Provenance

The Corey Haim cut is the “black sheep” of the Star Dawg family—volatile, intense, and prone to excess. Named after the tragic child star, the moniker suggests a strain that is “too much for most to handle”.

• The Terpene Profile: “Hairspray.” That is the single most common descriptor for the Corey Haim pheno. It smells of aerosol chemicals, burnt plastic, and raw garlic. It lacks the tropical sweetness of the Guava; this is pure, industrial funk.
• The Effect: This is the medical heavyweight. It is widely regarded as the most potent of the Star Dawg cuts, delivering a narcotic, sedative blow that can induce “couch lock” and “philosophical stargazing”. It is a strain for high-tolerance users who need to obliterate pain or insomnia.

4.2 The F2 Synthesis: Mining for the “Perfect Chem”

When Greenpoint Seeds crossed the Corey Haim mother with the Kate Upton male, they created an F2 generation designed to fix the structural flaws of the Corey Haim while retaining its potency.

Phenotype	Probability	Characteristics
The “Iron Lung” (Dominant)	~50%	Retains the “hairspray/garlic” terpene profile of the Corey Haim mother but adopts the tighter internodal spacing of the Kate Upton father. Result: A potent medical strain that yields better and is easier to trim.
The “Purple Chem” (Recessive)	~25%	The “Holy Grail.” A plant that possesses the lethal potency and gas of the Corey Haim but expresses the purple coloration of the Kate Upton father. This contradicts the general rule that “purple weed isn’t strong,” offering the best of both worlds.
The “Structural Revert”	~25%	Offspring that lean entirely toward the Chem 4 grandmother—tall, lanky, requiring heavy support, but offering the massive yields associated with the original lineage.

This breeding project essentially “domesticates” the Corey Haim. The original cut is a difficult plant to grow—finicky with nutrients and prone to sprawling. The Kate Upton male acts as a structural anchor, creating a version of Star Dawg that has the “kick” of a mule but the “manners” of a show pony. It is a “commercialized narcotic,” bringing medical-grade sedation into a format that production growers can manage efficiently.

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5. Case Study II: Star Dawg (Guava) x Star Dawg (Kate Upton Male)

Market Identity: Star Dawg Guava F2 (The Flavor Line)
Genetic Architecture: 50% Chem 4 / 50% Tres Dawg (Recombined for Flavor & Bag Appeal)

If the Corey Haim cross is about power, the Guava x Kate Upton cross is about prestige. The Guava cut is the “Celebrity” of the family, and this F2 project aims to make that celebrity photo-ready.

5.1 The “Guava” Provenance

The Guava cut cemented the Star Dawg legacy by winning Best Sativa at the 2012 Denver High Times Cannabis Cup. It is the “Sativa-leaning” anomaly in the typically Indica-dominant Tres Dawg line.

• The Terpene Profile: As the name suggests, this phenotype explodes with tropical fermentation. It does not smell like fresh fruit; it smells like guava and papaya that have been left in the sun to rot, layered over a base of chemical pine. This profile is driven by a unique synergy between Limonene(citrus), Myrcene (musk), and Caryophyllene (pepper).
• The Effect: Unlike the Corey Haim, the Guava is electric. It provides a “clean, cerebral high” that promotes focus, creativity, and energy. It is a functional daytime smoke, devoid of the heavy “body load” associated with the other phenos.

5.2 The F2 Synthesis: The “Tropical Purple”

Crossing the Guava with the Kate Upton male is a strategic move to address the Guava’s biggest weakness: its structure. As a Sativa-dominant plant, the Guava cut stretches significantly in flower, producing long, “fox-tailed” buds that can be airy if not grown perfectly.

The Kate Upton male, with its stocky Afghani influence, reigns in this Sativa stretch. The goal is to condense the Guava’s tropical terpene production into a denser, tighter bud structure.

This cross has the highest potential for “Exotic” market appeal. The combination of the Guava’s tropical terpene profile with the Kate Upton’s potential for purple coloration creates the possibility of “Purple Guava” phenotypes.

• Sensory Experience: Imagine a bud that looks like a deep purple gemstone (Kate Upton trait) but smells like a basket of tropical fruit soaked in gasoline (Guava trait). This contrasts sharply with most purple strains (like GDP or Purple Punch), which typically smell of grape or berry. A purple plant with a “Chem/Tropical” nose is a genetic rarity—a “Unicorn” that Greenpoint is hunting for.

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6. The Terpene Warfare: A Comparative Chromatography

6.1 The Corey Haim Line: The “Gas” Spectrum

The Corey Haim x Kate Upton cross is a study in Beta-Caryophyllene dominance.

• Mechanism: Caryophyllene is unique because it functions as a cannabinoid, binding directly to the body’s CB2 receptors. This explains the “narcotic” body effect of the Corey Haim line—it is literally engaging the immune system and inflammation response directly.
• The “Hairspray” Note: The sharp, acrid note often described as “hairspray” or “chemical” is likely a result of high concentrations of Nerolidol or Valencene interacting with the Caryophyllene, creating a “synthetic” aroma that warns the brain of potency.

6.2 The Guava Line: The “Fruit” Spectrum

The Guava x Kate Upton cross relies on Limonene and Myrcene.

• Mechanism: Limonene is known to increase the permeability of cell membranes, potentially allowing more THC to cross the blood-brain barrier faster. This correlates with the “racy,” “immediate” onset reported in Guava reviews.
• The “Rotten Fruit” Note: The “Guava” smell is not simple sweetness. It is the smell of over-ripe fruit. This suggests high levels of Thiols (sulfur compounds) mixed with the fruit terpenes. The Chem lineage is famous for these sulfur compounds (the skunk smell), and when mixed with tropical esters, it creates that complex “rotten papaya” funk.

Feature	Corey Haim x Kate Upton F2	Guava x Kate Upton F2
Primary Sensation	Heavy, sedative, narcotic “stone.”	Uplifting, electric, cerebral “high.”
Flavor Metaphor	“A burnt tire in a garlic patch.”	“A papaya soaked in turpentine.”
Structural Tendency	Medium stretch, golf-ball nugs.	High stretch, spear-shaped colas.
Bag Appeal Goal	Density and Frost (The “White” look).	Color and Exoticism (The “Purple” look).
Target User	Pain patients, insomniacs, tolerance veterans.	Artists, hikers, social smokers.

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7. The Greenpoint “Wild West” Philosophy

This analysis would be incomplete without contextualizing the breeder’s intent. Greenpoint Seeds operates on a philosophy of “genetic democratization.” By releasing F2 generations of elite, clone-only cuts (like the Corey Haim and Guava), they are effectively open-sourcing the code.

In a typical F1 hybrid (like the original Top Dawg release), the goal is uniformity. In an F2 project (like this one), the goal is segregation. Greenpoint knows that by crossing these sibling genetics (Star Dawg x Star Dawg), the resulting seeds will unlock recessive traits that were hidden in the parents.

• The “Miner’s” Mindset: Growing these seeds is not about getting 10 identical plants. It is about mining the pack to find the one plant that expresses the super-recessive traits—like the “Purple Chem” or the “High Yielding Corey Haim”—that would otherwise be lost to history.

8. Conclusion: The Legacy of the Stars

The Star Dawg F2 projects by Greenpoint Seeds are not mere reproductions; they are an evolution. By introducing the Kate Upton male into the equation, Greenpoint has attempted to civilize the wild, unruly nature of the Chemdog lineage.

• The Corey Haim x Kate Upton cross is a Sledgehammer wrapped in Velvet. It offers the devastating, medicinal potency of the 90s underground scene but presents it in a package that is beautiful, purple-tinged, and structurally sound.
• The Guava x Kate Upton cross is a Tropical Storm. It captures the rare, energetic side of the Chem spectrum and stabilizes it, offering growers a chance to produce exotic, purple, fruit-forward flowers that retain the trademark “gas” of the I-95 corridor.

For the cultivator and the connoisseur, these seeds represent a living link to the parking lot at Deer Creek—a 30-year biological journey from a bag of “Dog Bud” to the pinnacle of modern poly-hybrid breeding. They are a testament to the fact that while the “Chem” may be old, it is far from obsolete; it is simply evolving.

Weight	0.25 oz
Quantity	Full pack – 10 regular photoperiod seeds
Seed Sex	Regular
Cannabis Type	Photoperiod
Flowering Length	70-80 Days
Lineage	Corey Haim cut, Guava cut
Brand	Greenpoint Seeds