Jack Herer sits closer to the middle than most haze descendants, finishing around ten weeks while keeping a recognisably sativa character in structure and effect. That balance is why it stayed popular through decades when longer flowering lines fell out of fashion. Where it fits relative to purer haze cuts is compared at https://hazesativaseeds.com with flowering data. The phenotype variation in it is wide, so packs can throw plants that lean noticeably in either direction.