Old Jack

Old Jack is a hybrid cannabis strain with up to 24.0% THC, known for its euphoric effects and citrus and earthy flavor profile.

Old Jack is a cannabis strain that represents a stabilized phenotype selection from the broader Jack Herer family, though its exact genetic origins are somewhat debated among cannabis historians. The strain is believed to have emerged in the late 1990s or early 2000s as breeders worked to preserve and refine the classic Jack Herer genetics, which were originally developed by Sensi Seeds. Unlike some modern hybrids that emphasize extreme THC levels, Old Jack maintains a more balanced cannabinoid profile that reflects earlier cannabis breeding priorities.

The strain produces medium-sized, conical buds with a distinctive appearance characterized by bright orange pistils weaving through forest green calyxes. A generous coating of trichomes gives the flowers a frosty, crystalline appearance. The buds are typically dense but not overly compact, with a structure that facilitates proper air circulation during cultivation. Old Jack's foliage often displays subtle purple hues in cooler temperatures, particularly during the final weeks of flowering.

Notable features include its complex aromatic profile and consistent effects across different phenotypes. While many modern strains show significant variation between plants, Old Jack has been selectively bred for stability, making it a reliable choice for both growers and consumers seeking predictable results. The strain has maintained a dedicated following among connoisseurs who appreciate classic cannabis genetics, though it has become somewhat less common in commercial markets dominated by newer, higher-THC varieties.