Jack Heir carries forward the legendary Jack Herer lineage with improved stability and resin production. Explore the genetics, effects, and optimal grow parameters.
Jack Herer is cannabis royalty — named after the legendary activist and author, it has won more awards than almost any other strain. Jack Heir is our tribute to that legacy: a refined, stabilized version that preserves the uplifting, creative effects while delivering improved consistency and resin production.
Genetic Lineage
The original Jack Herer combined Haze, Northern Lights #5, and Shiva Skunk. Jack Heir builds on that foundation with 5 generations of selection, prioritizing the terpinolene-dominant phenotype that produces the classic Jack Herer experience: clear-headed, creative, and energizing without the anxiety that plagues many sativa-leaning strains.
- Genetics: Jack Herer IBL selection
- Type: 55% Sativa / 45% Indica
- THC: 20-24%
- CBD: <1%
- Flowering Time: 8-9 weeks
Terpene Profile
Jack Heir is defined by its terpinolene dominance — that distinctive herbal, piney, slightly floral aroma that sets Jack Herer apart from other sativas. Secondary terpenes include pinene (forest, clarity), caryophyllene (pepper, depth), and myrcene (earth, body).
- Terpinolene: 0.8-1.2% — Herbal, piney, floral
- Pinene: 0.4-0.6% — Forest, mental clarity
- Caryophyllene: 0.3-0.5% — Peppery, anti-inflammatory
- Myrcene: 0.2-0.4% — Earthy undertone
Effects & Experience
Jack Heir delivers the signature Jack Herer experience: a blissful, clear-headed high that sparks creativity and conversation. The onset is rapid and cerebral, with a wave of euphoria that settles into focused, productive energy. Unlike pure sativas, Jack Heir has enough indica heritage to prevent the jittery, anxious edge that some users find uncomfortable.
- Onset: Fast (3-5 minutes)
- Peak: 45-90 minutes
- Duration: 2-3 hours
- Primary effects: Creativity, euphoria, focus, energy
- Secondary effects: Mild body buzz, appetite stimulation
Growing Jack Heir
Jack Heir is beginner-friendly despite its sativa heritage. The indica influence produces a more manageable structure with less stretch than pure sativas. Plants develop a classic Christmas tree shape with a dominant central cola and strong lateral branching.
Indoor Cultivation
- Height: 80-120cm
- Flowering: 8-9 weeks
- Yield: 400-500g/m²
- Training: Responds well to topping and LST
- Light: 400-600W LED recommended
Outdoor Cultivation
- Height: 120-180cm
- Harvest: Late September - Early October
- Yield: 400-600g/plant
- Climate: Temperate to Mediterranean
- Notes: Good mold resistance, benefits from support stakes
Frontier Frost Jack Heir
Our Jack Heir is the result of 5 generations of selection from authentic Jack Herer genetics. We prioritized the terpinolene-dominant, creative phenotype while improving resin production and stabilizing flowering time. The result is a strain that delivers the legendary Jack Herer experience with modern consistency and yield.
Frontier Frost Seeds
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