Lavender Jack is a contemporary hybrid cannabis cultivar that blends classic old-world florals with an energetic sativa lift. Most growers and consumers describe it as a slightly sativa-leaning hybrid (often cited around 60/40) that pairs an upbeat, clear-headed start with a calm, body-centered finish. The name points to its likely parentage—Lavender crossed with Jack Herer—though, like many modern cuts, local naming can vary by breeder and region.