Union Jack

Union Jack is a indica dominant hybrid (70% indica/30% sativa) strain that has quietly built a dedicated following. This infamous bud boasts a THC level that ranges from 15-21% on average, with 0.5% CBD. It is sold as regular seeds, and it remains one of the most requested cuts in its class year after year.

Users describe the Union Jack high as a slow, warming body melt that starts at the back of the head and rolls down through the limbs, easing muscles into deep, contented calm while the mind drifts into a hazy, happy state. A gentle mental uplift keeps the mood bright the whole way through, so the physical heaviness never tips over into fogginess. Because of these effects, Union Jack is often chosen for managing chronic stress, muscle tension and insomnia and other sleep disorders, especially by those who want relief without reaching for anything heavier.

On the palate, expect citrus and diesel up front, backed by an aroma that fills the room the moment the jar opens. The smoke is smooth on the inhale with a diesel finish that builds the longer the session runs. This bud has chunky popcorn-shaped vivid green nugs with warm amber tones, fiery orange hairs and a fine dusting of milky white trichomes.

For growers, Union Jack offers an easy, forgiving grow that suits first-time cultivators — expect plants flowering in a standard 9-10 weeks, at home in controlled indoor setups. It shrugs off common beginner mistakes, and yields stay respectable even when conditions are less than perfect. Plants stay compact enough for tents and small rooms, which makes canopy management straightforward. Its genetics run through the wider Jack family — see Critical Jack and Critical Jack Auto for close relatives worth comparing before you buy.