Jack Herer Feminized Seeds

Jack Herer is a perfectly balanced hybrid created by Sensi Seeds in 1994 and named after the legendary cannabis activist and author of The Emperor Wears No Clothes. This strain has won more Cannabis Cup awards than almost any other variety and has earned a permanent place in the cannabis hall of fame. Jack Herer combines the cerebral electricity of Haze sativas with the resin production of indica genetics, delivering a high-energy experience wrapped in a thick coat of trichomes that has to be seen to be believed.

Genetics & Lineage

Jack Herer is a complex cross of (Northern Lights #5 x Haze A) x (Skunk #1 x Haze C). The Northern Lights #5 parent brings indica density, heavy resin production, and a fast finishing time. Two separate Haze lines — Haze A and Haze C — contribute the soaring sativa cerebral effects and the extended, complex high that Haze is famous for. Skunk #1 ties the cross together with hybrid vigor, reliability, and faster flowering. The result is a true 50 percent indica and 50 percent sativa hybrid that expresses multiple distinct phenotypes, ranging from fast-finishing indica-leaning plants to taller sativa-dominant specimens with longer flowering times.

Appearance

Jack Herer produces massive resin-covered buds with a trichome density that is extraordinary even by modern standards. Under magnification, the calyxes appear diamond-dusted, with so many resin glands that the plant tissue underneath is barely visible. The buds are well-structured with a mix of density and sativa openness depending on phenotype. The overall impression is of a plant built to produce resin — every surface from the flowers to the sugar leaves glistens with sticky trichomes.

Aroma & Flavor

The aroma leads with spicy, sharp notes and a distinct pine character, layered over a pungent hashish foundation and fruity skunk undertones. The dominant terpene is terpinolene, which is uncommon in cannabis and gives Jack Herer a distinctive herbal-floral character that sets it apart from other skunky strains. The flavor delivers a complex savory hashish taste with Afghan warmth on the inhale, transitioning to fruity skunk and spice on the exhale. The taste profile varies between phenotypes, with some leaning more spicy and others more fruity, but the savory hash backbone remains consistent.

Effects

Jack Herer is known for one of the most energizing and clear-headed highs in cannabis. The onset is a rush of cerebral stimulation that sharpens focus, sparks creativity, and lifts the mood without the raciness or anxiety that pure sativas can produce. A warm full-body buzz accompanies the head high, providing physical comfort without sedation. The effects are long-lasting and well-suited to daytime use, creative work, social situations, and any activity where mental clarity matters. THC levels range from 18 to 23 percent, with some modern phenotypes testing as high as 27 percent. Despite the balanced 50/50 genetics, the experience leans decidedly sativa in character.

Growing Information

Jack Herer feminized seeds flower in 8 to 12 weeks depending on phenotype expression. Indica-leaning phenotypes finish faster around 8 weeks, while sativa-dominant plants need 10 to 12 weeks. Indoor yields reach 500 to 600 grams per square meter with proper training and light management. Outdoor plants produce 400 to 600 grams per plant in warm, sunny climates. Plants grow tall at 120 to 200 centimeters with vigorous stretch during the flowering phase, so indoor growers should plan for height management through topping, SCROG, or supercropping. The grow difficulty is moderate — the multiple phenotype expressions mean growers may see variation between plants, and the sativa-leaning phenotypes require patience and space. Jack Herer performs best in Mediterranean and sunny climates with long growing seasons.