Jack Herer Auto by Seedstockers

Jack Herer Auto preserves a true piece of cannabis history in a modern, fast-finishing format. Seedstockers crossed Jack Herer with its own AK420 Auto, keeping the classic pine-and-spice terpenes and energetic, creative sativa effect that made the original a 1990s icon.

No light switch is needed. Keep 18/6 or 20/4 from germination to harvest and the plant runs its full cycle in about 12 weeks from seed.

This is one of the tallest autos in the Seedstockers catalog, with strong vertical growth and chunky, resin-coated central colas. Yields are massive: 550–650 g/m² (1.80–2.13 oz/ft²) indoors and 150–250 g/plant (5.3–8.8 oz/plant) outdoors.

THC is rated at 20–26%, and the breeder places it at intermediate level, mainly because its height calls for some early training.

Lineage: Jack Herer x AK420 Auto

The original Jack Herer, named after the famous cannabis activist, is a sativa-leaning hybrid known for its spicy pine aroma and bright, clear-headed effect. It became one of the defining strains of the 1990s.

To create the autoflower, Seedstockers paired it with AK420 Auto, its own fast, sativa-dominant auto. The result is a stable, vigorous plant with predictable autoflower timing and the classic Jack profile preserved in full.

Aroma, Flavor and Effect

The aroma is pungent pine and spice over a sweet fruity undertone, the legendary Jack Herer scent that fills a room as soon as the jar opens.

The flavor starts with spicy pine, moves through sweet, earthy fruit in the middle and finishes with a sharp, peppery kick. It is a bit like a hike through a pine forest with a handful of wild berries and fresh cracked pepper.

The effect is a clear, energetic sativa rush that lifts the mood, sharpens focus and sparks creativity. The body stays loose while the mind stays bright, which makes it a daytime classic for good reason.

It suits creative work, long walks and conversation-heavy afternoons.

Growing Jack Herer Auto Indoors and Outdoors

Indoors, run 18/6 or 20/4; the breeder’s reference is LED on 20/4 for 550–650 g/m² (1.80–2.13 oz/ft²). Height control is the main task. The breeder’s top tip is to use LST or top early, because Jack stretches taller than most autos and a little training keeps it under control.

Start the seed directly in its final container, begin gentle LST in the second or third week and keep the canopy even. Supporting the central colas with a stake or net in late flower helps them carry their full weight.

Outdoors, use 15–20 L (4–5.3 gal) pots for 150–250 g/plant (5.3–8.8 oz/plant). Jack Herer Auto loves sunny climates and still finishes reliably in cooler regions, so it is a dependable option for short summers as well as long, warm seasons.

Give the plant room to stretch, keep feeding balanced and the reward is heavy, resin-coated colas with that unmistakable pine-spice signature.

Jack Herer Auto Characteristics

Strain type	Autoflowering feminized
Genetics	Jack Herer x AK420 Auto
Indica/Sativa	Sativa dominant
THC	20–26%
Effect	Energetic, creative, focused
Flavor	Spicy pine, sweet earthy fruit, pepper
Aroma	Pungent pine and spice, sweet fruit
Indoor yield	550–650 g/m² (1.80–2.13 oz/ft²)
Outdoor yield	150–250 g/plant (5.3–8.8 oz/plant)
Seed to harvest	About 12 weeks
Height	Tall for an autoflower
Difficulty	Intermediate
Best cultivation technique	Early LST or topping to control height

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