OG Kush vs. Purple Kush: Same Myrcene Lead, Limonene vs. Pinene Is the COA Tell

Vermont dispensaries sell both OG Kush and Purple Kush as evening indicas under the broad "Kush" category, and that label understates what separates them. Both are Hindu Kush descendants, both are Myrcene-dominant, and both are appropriate for post-work and nighttime use. That is where the overlap ends. OG Kush is a hybrid with Chemdawg genetics, a head-and-body arc, a diesel-fuel aroma, and a 19–26% THC ceiling. Purple Kush is a pure Oakland indica with no Chemdawg ancestry, body-first sedation from onset, a distinctive grape-over-earth aroma, and a focused 17–22% window. The two strains feel genuinely different at the counter — and the COA explains why in a single number.

Position two. Both strains open with Myrcene at position one, which tells you they are evening-weighted and body-oriented. Position two is where they diverge: OG Kush runs Limonene there; Purple Kush runs Pinene. That single swap explains the hybrid arc versus the pure indica body drop. If you know what to look for on a COA, you can tell them apart in under ten seconds — and the nose tells you even faster than that.

The COA fingerprint: Myrcene ties them, Limonene vs. Pinene separates them

On a Vermont dispensary terpene panel, OG Kush and Purple Kush both show Myrcene in the number-one position. That shared lead tells you they are Kush-family strains, evening-appropriate, and body-oriented. It tells you nothing about which you are holding.

Position two is the useful information. OG Kush shows Limonene there — the citrus-and-brightness terpene that is the defining chemical marker of the OG Kush family's hybrid architecture. Every major OG Kush expression, and most of its direct descendants, runs Limonene in the second position. That Limonene came directly from OG Kush's Chemdawg parent — the same genetics that gave the strain its diesel-fuel aroma edge. Limonene at position two in a Myrcene-lead strain is a reliable marker of the head-and-body hybrid arc: a euphoric, mood-lifted phase in the first 10–20 minutes before the body component builds in and eventually becomes primary.

Purple Kush shows Pinene at position two — the sharp, resinous terpene that dominates the pure-Afghani-lineage indica signature. Pinene at position two in a Myrcene-lead strain means no head opener: the effect arrives as physical heaviness and body relaxation from the first 15 minutes onward, with no preceding euphoric phase. This is the architecture of a pure-landrace indica — no sativa genetics to introduce Limonene's uplift. Purple Kush's Pinene came from its Purple Afghani parent, the same parent that contributed the grape aroma and the anthocyanin-producing genetics that make the strain reliably purple. The terpene at position two and the aroma are both Purple Afghani's legacy.

Position three adds confirmation: both strains have Caryophyllene there, so position three does not distinguish them. The entire COA story is at position two: Limonene = OG Kush; Pinene = Purple Kush. If the panel shows Myrcene → Caryophyllene at positions one and two instead of Limonene or Pinene at position two, you have a third strain — Northern Lights, Master Kush, Granddaddy Purple, or another Caryophyllene-secondary Myrcene-dominant indica.

Two Hindu Kush descendants with opposite personalities

OG Kush and Purple Kush share Hindu Kush as a direct parent — and that is where their genetics converge. Understanding what each strain's second parent contributed explains why they feel so different despite the common ancestor.

OG Kush emerged in Florida in the early 1990s from a cross of Chemdawg, Hindu Kush, and Lemon Thai. Chemdawg is the most genetically significant parent: it introduced Limonene at position two, the diesel-and-chemical aroma that defines the OG Kush family, and the cerebral hybrid component that Hindu Kush alone does not produce. Lemon Thai added a citrus brightness. Hindu Kush provided the indica body foundation and the Myrcene lead. The result was a strain that carried Kush's body weight at the bottom while running Chemdawg's hybrid complexity at the top — which is why OG Kush became the most genetically consequential strain in modern cannabis history. Its hybrid architecture made it a breeding hub: cross OG Kush with Durban Poison and you get GSC; continue down that tree and you get Wedding Cake, Gelato, Runtz, and the entire Cookies dynasty.

Purple Kush was developed in Oakland, California in the 1990s by crossing Hindu Kush directly with a purple-expressing Afghani variant called Purple Afghani. Bay Area cultivators working independently of the Dutch seed banks took the same Central Asian landrace foundation and produced a cross with no hybrid complexity added. Purple Afghani contributed heavier resin production, deeper earthiness, the distinctive grape flavor genetics, and the reliable anthocyanin-producing genes responsible for the strain's consistent purple coloration. The result carries the original Kush-landrace character without modification: no Chemdawg, no Haze, no breeding for higher THC. Purple Kush at 17–22% with a strong terpene profile often produces more thorough sedation than modern 28–30% cultivars with thin terpene content — the Myrcene and Pinene concentrations in a well-grown heritage indica work at a different ratio than modern hybridized genetics.

The shared Hindu Kush ancestry is the reason both strains fall under the Kush label and both run Myrcene at position one. The divergent second parents explain everything that is different about them.

What each smells like at the counter

The aroma difference is the fastest and most reliable field test, and it is large enough to be unambiguous even without prior experience with either strain.

OG Kush opens with a sharp, immediately identifiable diesel-and-chemical note — the Chemdawg fingerprint. Under the diesel is a pine-and-resin base from the Hindu Kush parent, with a citrus brightness from Lemon Thai that lifts the profile without softening the gas note. The result is fuel-dominant with pine and skunk underneath, announcing itself from an unsealed container across a room. No other Kush-family strain smells like this. The diesel is specific enough to serve as a fingerprint across the entire OG Kush family: any strain with that sharp chemical-gas character is almost certainly in the OG Kush lineage.

Purple Kush smells nothing like OG Kush. The first note is deep grape — not the candy-grape of Granddaddy Purple, but a deeper, more genuine grape character over an earthy-hash base. The Purple Afghani parent's flavor genetics produce this grape note, and no other major Kush-family strain has inherited it. Under the grape is the classic Kush earth-and-hash base: resinous, dry, quietly musky. There is no fuel, no diesel, no Chemdawg sharpness. A well-grown Purple Kush batch smells like grape over aged hash — closer to the Central Asian landrace character that defined cannabis in the 1970s and 1980s than anything in the modern hybridized market.

At the dispensary counter: if the jar smells of fuel and diesel, you are holding OG Kush or a close relative. If it smells of deep grape over earthy hash, you are holding Purple Kush. The test takes about five seconds and requires no equipment — faster and often more reliable than a COA read for distinguishing these two strains specifically.

Effect arcs compared

OG Kush runs a head-and-body hybrid arc. Onset begins with a mood-lifted, partially euphoric phase driven by Limonene at position two — a real head-forward window in the first 10–20 minutes that distinguishes it from any pure indica. The body component builds progressively over the following 20–40 minutes until it becomes the primary event: relaxation deepens, the appetite drive activates strongly (Relaxed/Hungry/Sleepy are OG Kush's primary effects, with Hungry reliably present), and the hybrid opening settles into full-body weight. At moderate doses, this arc suits early-to-mid evening use — social enough to remain present in a conversation, body-heavy enough to signal the day is ending. At higher doses, couch-lock and a pronounced hunger drive become dominant. OG Kush rewards attentive dosing; the hybrid complexity means the experience responds more to dose variation than a pure indica does.

Purple Kush runs a pure indica body arc without the head phase. The effect opens with a brief, mild euphoric warmth — typically 5–10 minutes, and considerably shorter and less distinct than OG Kush's euphoric phase. Body heaviness arrives quickly after and deepens steadily. The primary effects are Relaxed and Sleepy; the Happy element is present as a quiet, comfortable ease rather than an active mood lift. At moderate doses, deep body relaxation is the defining experience: muscles soften, tension releases, and physical comfort deepens without significant mental engagement. At higher doses, sedation progresses toward couch-lock and sleep predictably. There is no hunger drive comparable to OG Kush's.

Practical use windows: OG Kush for 5–9 PM when the hybrid arc's partial social and functional element is still useful, followed by a body-heavy plateau as the evening progresses. Purple Kush for late evening and pre-sleep when direct body sedation without a preceding head phase is exactly what is needed.

Who should choose which

Choose OG Kush if: you want the hybrid head-and-body arc with a genuine euphoric opening before the body weight arrives; the strong appetite drive is a benefit; you are using it in the early-to-mid evening and want to remain partially functional before settling in; or you are drawn to the diesel-fuel-pine aroma that defines the OG Kush family.

Choose Purple Kush if: you want pure indica sedation from onset — body-first, no head component, deep relaxation that progresses toward sleep without an uplifted phase to navigate first; you prefer the grape-over-earthy-hash aroma over fuel and diesel; you are interested in the heritage landrace character that modern hybridized genetics do not typically provide; or Vermont's fall harvest window is when you are shopping and the full purple-anthocyanin expression is part of the appeal.

On dosing: OG Kush reaches 26% THC on Vermont retail batches; Purple Kush reaches 22%. Neither is appropriate for new or low-tolerance consumers without starting with a minimal dose. Allow 45–60 minutes before considering a second dose of either.

Vermont availability

OG Kush is one of the most reliably stocked strains at Vermont dispensaries — a year-round staple appearing at Float On Dispensary, Upstate Elevator Supply Co., Theory Wellness, and The High Bar with consistent frequency. Purple Kush is periodically available from craft cultivators carrying heritage-indica genetics. At 17–22% THC it does not compete on the label metric most consumers scan first — a market distortion that does not reflect quality, but shapes what Vermont cultivators choose to grow. Vermont's September–October outdoor harvest batches are often the best expressions: the nighttime temperature drops trigger full anthocyanin expression and cool conditions suit the Afghani-lineage terpene profile well.

Vermont law (S.278, eff. July 1, 2026): adults 21 and older may purchase and possess up to 2 oz of flower or 10 g of concentrate from any licensed adult-use retailer in Vermont.

See also: OG Kush strain spotlight — complete profile: Chemdawg × Hindu Kush × Lemon Thai lineage, Florida 1990s origin, Myrcene → Limonene → Caryophyllene breakdown, the family it spawned (GSC, Headband, Tahoe OG, SFV OG, Bruce Banner), and Vermont buying guide; Purple Kush strain spotlight — complete profile: Hindu Kush × Purple Afghani, 1990s Oakland origin, Myrcene → Pinene → Caryophyllene breakdown, grape aroma explained, reliable purple coloration guide, and Vermont craft-cultivator buying notes; OG Kush vs. Master Kush comparison — the Myrcene-lead parallel with a different position-two split: OG Kush (Limonene #2, hybrid arc) vs. Master Kush (Caryophyllene #2, direct body sedation with no head opener); both share Hindu Kush as a parent, but Master Kush has no Chemdawg ancestry at all; Purple Kush vs. Hindu Kush comparison — the parent-child head-to-head: both run Myrcene → Pinene → Caryophyllene; the difference is aroma (grape vs. sandalwood), color, and the brief mild euphoric opening Purple Kush inherited from the Purple Afghani parent; why the COA cannot separate them and the aroma is the definitive field guide; Northern Lights vs. OG Kush comparison — same Myrcene lead, position-two split: NL (Caryophyllene #2) drops directly to body sedation; OG Kush (Limonene #2) delivers the head-and-body hybrid arc; OG Kush vs. Bubba Kush comparison — two Hindu Kush descendants: OG Kush's diesel-hybrid arc vs. Bubba Kush's coffee-chocolate pure-indica depth; the aroma tells them apart immediately; OG Kush vs. Granddaddy Purple comparison — Myrcene-lead COA trap: position two splits them (Limonene = OG Kush, Caryophyllene = GDP); OG Kush stays partially cerebral with strong hunger, GDP drops directly to body sedation; Kush strain family guide — the full Kush taxonomy from Hindu Kush and Afghani landraces through OG Kush, Purple Kush, Master Kush, and Bubba Kush; OG Kush strain family guide — the downstream family from OG Kush through GSC, Headband, Tahoe OG, and the Cookies dynasty; Hindu Kush spotlight — the shared parent of both OG Kush and Purple Kush, the Central Asian landrace at the root of the modern Kush family; Vermont Strain Match for a personalized evening-indica recommendation based on your intent, tolerance, and preferred effect arc; Float On Dispensary (136½ Church St, Burlington); Upstate Elevator Supply Co. (699 Pine St, Burlington); The High Bar (159 Pearl St, Essex Junction); Theory Wellness Brattleboro (768 Putney Rd); full Vermont dispensary directory.