A deep dive into one of our signature genetics — the lineage, terpene profile, grow characteristics, and what makes Jack Heir a standout in any garden.
Some strains are workhorses. Others are showpieces. Jack Heir is both. A cross built for serious gardeners who want exceptional flower and a memorable grow experience from start to finish.
Lineage
Jack Heir traces its roots to Jack Herer — one of the most celebrated sativas in cultivation history — bred with a stabilizing indica influence that brings down the stretch and tightens the structure without sacrificing the cerebral, terpene-rich expression the Jack family is known for.
Terpene Profile
- Dominant: Terpinolene (floral, herbal, slightly piney)
- Secondary: Myrcene (earthy, musky)
- Tertiary: Ocimene (sweet, tropical, woody)
Grow Characteristics
Structure
Jack Heir develops a classic sativa-leaning structure with moderate internodal spacing. It responds exceptionally well to topping and LST, filling out into a wide, productive canopy. Expect significant stretch in the first two to three weeks of flower — plan your vertical space accordingly.
Feeding
A moderate feeder. Jack Heir prefers slightly lower EC than pure indicas — push it too hard and you will see tip burn earlier than expected. Keep mid-flower nitrogen moderate and dial up phosphorus and potassium as you approach the final four weeks.
Flowering Time
Approximately 65–70 days from flip. Watch trichomes rather than calendars — Jack Heir can display misleadingly early amber in the pistils while the trichomes are still fully cloudy.
Final Notes
Jack Heir rewards patience. The final week of flush brings out a beautiful contrast of orange hairs against pale green calyxes, and the dried flower has a remarkably long shelf life when cured properly. If you have not grown it, put it at the top of your next run.
Frontier Frost Seeds
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