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Indica90% Indica / 10% Sativa13–19% THC

Hash Plant

Also known as: Hashplant, HP

Breeder: Sensi Seeds (via Nevil Schoenmakers / The Seed Bank, 1987)

Hash Plant is the archetypal resin-production cultivar — a living definition of the stocky, chunky Afghanica genotype, descended from one of the finest hash-making landraces ever brought from the Hindu Kush to the West. The original female clone was transported to the Netherlands in the mid-1980s and became a foundational building block for numerous Sensi Seeds hybrids before being stabilized into a seed line via backcrossing with Northern Lights #1. The result was so potent that even experienced Dutch smokers had trouble finishing a single joint. Its extraordinarily short flowering time (40–45 days), compact structure, and massive trichome coverage make it ideal for indoor cultivation and hash extraction.

Lineage
Hash Plant (PNW clone) x (Hash Plant x Northern Lights #1)
THC Range
13–19%
Flower Time
40–45 days (Sensi Seeds official); 6–7 weeks general
Difficulty
Easy — one of the most forgiving strains for first-time indoor growers

Lineage & Genetics

Cross: Hash Plant (PNW clone) x (Hash Plant x Northern Lights #1)

Parent strains in encyclopedia:Northern LightsHindu KushAfghani

The Hash Plant mother is a pure Afghanica clone developed in the US Pacific Northwest from Hindu Kush landrace genetics, prized for extreme resin output and compact growth. Northern Lights #1 is another elite pure Afghan indica from Nevil's breeding program (Purest Indica x Afghani), selected for vigor, short flowering, and heavy trichome production. Both parents represent the royal families of Afghanica genetics.

Lineage Dispute

The original Hash Plant clone's provenance is uncertain. Sensi Seeds confirms it arrived from the Pacific Northwest USA via Nevil circa 1984–85, but whether it came from Sam the Skunkman or another breeder is undocumented. The final seed strain is a confirmed backcross: a 50/50 HP×NL#1 male crossed back to the original HP mother, yielding a 75% HP / 25% NL#1 hybrid.

Terpene Profile

DOMINANT

Myrcene

DOMINANT

Caryophyllene

SECONDARY

Humulene

SECONDARY

Ocimene

Aroma: Deep, rich Afghani earthiness with prominent spicy-woody notes and a distinct old-school hashish pungency. The dried buds develop a brittle trichome surface that gives off the unmistakable scent of raw resin glands — described by growers as 'sweet Afghan hash smell' that takes older consumers on a trip back in time.

Flavor: Dominated by the spicy-sharp bite of smouldering resin glands, a sensation that quickly becomes indistinguishable from the effect itself. Heavy, smooth smoke with woody-earthy undertones and a hashish finish. The taste mirrors high-quality pressed charas — gentle hashish on the palate with exceptional complexity beneath.

Effects & Experience

Onset: Rapid — the instant vaporization of dense trichome layers accelerates delivery. Initial mild euphoria and a brief sativa-like head rush give way within 10–15 minutes to full indica dominance.

Breathtakingly powerful body stone with deep physical relaxation and sedation. Heavy couch-lock, munchies, and time distortion are commonly reported. Described as 'blissful' and 'narcotic' rather than anxious or racy.

Duration: Long-lasting — the heavy body effects persist for 2–3 hours with residual sedation extending well beyond.

Commonly Reported Uses

Pain reliefStressAnxietyInsomniaMuscle tensionAppetite stimulation

Growing Characteristics

Flower Time
40–45 days (Sensi Seeds official); 6–7 weeks general
Yield (Indoor)
380–500 g/m² (SOG and hydro setups at the higher end)
Yield (Outdoor)
350–400 g/plant in dry Mediterranean climates
Difficulty
Easy — one of the most forgiving strains for first-time indoor growers
Height
Short / Compact — typically 0.9–1.2m; minimal stretch
Environment
Prefers indoor hydroponic setups; also suitable for dry outdoor climates. Temperature range 60–85°F, humidity below 45% in late flower. Does not tolerate high humidity.

Grow Tips: Ideal for Sea of Green (SOG) — 16–25 plants/m² with minimal veg (2–4 weeks) for fast turnover. Easy to clone; the original was maintained as clone-only for years before seed stabilization. Dense buds are susceptible to botrytis — prioritize airflow, defoliate inner canopy, and keep RH below 45% in flower. Responds well to hydroponics; Sensi Seeds specifically recommends indoor hydro for this strain. Avoid overfeeding in final weeks of flower to preserve resin quality and terpene profile. For hash production: harvest when trichomes are milky-to-amber, then flash-freeze immediately for bubble hash or dry for sift/charas. Lollipop lower branches to prevent mold and redirect energy to top colas. Harvesting slightly later (more amber trichomes) enhances sedative effects.

History & Origin

Hash Plant's story begins in the Hindu Kush mountains where Afghan landraces were cultivated for centuries to produce charas and pressed hashish. Seeds or cuttings made their way to the US Pacific Northwest, where an exceptional female was selected and maintained as a clone. Around 1984–85, Nevil Schoenmakers acquired this clone and brought it to the Netherlands. In his Seed Bank breeding labs, the clone became a cornerstone of multiple hybrid programs. To create a worthy seed line, Nevil crossed the HP female with a Northern Lights #1 male, then backcrossed the resulting hybrid male to the original HP mother. Released commercially in 1987 through The Seed Bank (later absorbed into Sensi Seeds), Hash Plant has remained in continuous production for nearly 40 years.

Awards & Recognition

  • 1st Place — Cannabis Culture Tokers Bowl 2004
  • 2nd Place — Highlife Cup 2002 (Hydro - Seedbanks category)
  • Mr. Nice G13 x Hash Plant: 2nd Place — Highlife Cup 2004 (Hydro category)

Notable Crosses

Strains bred using Hash Plant as a parent:

Mr. NiceG13 x Hash Plant — Sensi Seeds, 1999; named for Howard Marks; 100% indica
Black DominaNorthern Lights x Ortega x Hash Plant x Afghani SA — Sensi Seeds; four-way indica
Candy HashGelato #41 x Hash Plant — Sensi Seeds x Sherbinskis
Tezla OGHash Plant x Shiva Skunk x SFV OG — Sensi Seeds
818 HPOG818 SFV OG x Hash Plant — Relentless Genetics
Hash BurgerHan Solo Burger x Hash Plant — Leafly Strain of the Year 2025
Sources & References (8)
  1. Sensi Seeds official strain page — sensiseeds.com/en/cannabis-seeds/sensi-seeds/hash-plant
  2. Sensi Seeds blog: Cannabis Strain Focus: Hash Plant
  3. Sensi Seeds blog: Best Hash Strains 2026
  4. SeedFinder.eu: Hash Plant (Sensi Seeds) Lineage — seedfinder.eu/en/strain-info/hash-plant/sensi-seeds/genealogy
  5. Weedmaps: Hash Plant — weedmaps.com/brands/sensi-seeds/products/sensi-seeds-hash-plant
  6. Leafly: Hash Plant — leafly.com/strains/hash-plant
  7. CannaGenie: Hashplant Genetics
  8. Strainpedia: Hash Plant — strainpedia.com/hash-plant/

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