Super Lemon Haze is Green House Seed Company's cross of Lemon Skunk and Super Silver Haze, bred in Amsterdam and credited to the late Franco Loja. Green House classifies it 70% sativa, 30% indica. Lemon zest over pine and Haze wood, landing cerebrally and physically at the same time.
A run, not a launch
What put this plant on the map was not a marketing campaign. It was back-to-back first-place Cannabis Cup finishes in 2008 and 2009, which turned a Green House release into a global name almost overnight.
Amsterdam seed distribution carried it into grow rooms years before licensed American markets existed. By the time dispensaries opened in the States, the plant was already a known quantity behind the counter, and that head start still shows. Ask a shop for a lemon sativa and this is the name that comes back first.
It belongs to the Amsterdam era of breeding: plants selected for the judging table and the seed catalogue rather than for bag appeal on an American menu. Different priorities, and it produced a different kind of plant.
Where the lemon comes from
The genetics are Lemon Skunk crossed with Super Silver Haze. Lemon Skunk traces back to Skunk #1 selections chosen specifically for pronounced citrus. Super Silver Haze, an earlier Green House project, combines Skunk #1, Haze and Northern Lights #5.
Stack those and the lemon stops looking like a naming coincidence. The Skunk side supplies sweetness and peel; the Haze side supplies incense-like spice, stretch and resin. Both parents were already pointing this direction before they met.
Beta-caryophyllene, D-limonene and terpinolene are the terpenes Green House calls out, which lines up with the peppery, woody edge sitting behind the citrus. The wider Haze family runs the same spice through different filters, audible in cuts like Uptown Haze.
In the room
Green House lists a ten-week indoor flowering window, mid-October outdoors in the Northern Hemisphere, and yields reaching 800 grams per square metre indoors.
The plant runs medium-tall with long branches that take training well, and grows tall enough outdoors to want support. That combination of vigour and trainability is part of why it spread so widely among home growers.
Buds finish elongated rather than golf-ball dense, light to medium green, threaded with orange pistils and heavily resined. Harvest timing, dry and cure decide how cleanly the lemon separates from the spicy base underneath it.
What well-cured material tastes like
Two details do more work than a stack of adjectives. In properly cured flower the citrus reads as zest and rind rather than candy, and the Haze spice arrives on the exhale rather than before it.
That sequencing is the mark of the real thing. The brighter, more citrus-forward end of the modern shelf, including cuts like Lemon OG, mostly leads with the lemon and leaves it there.
The competition run
The competition history is specific: first place at the High Times Cannabis Cup in 2008 and 2009 and second in 2010; first at the IC420 Growers Cup in 2010; and second at ExpoGrow-Irun in 2012 followed by first there in 2013.
Every one of those placements belongs to a Green House entry grown by Green House. The genetics travel; the grow does not, which is why the same cross can read very differently from two different rooms.
Where it still shows up
The line remains in active use as breeding stock. Capulator's Lion's Strength crosses it into MAC 1, putting an Amsterdam classic directly into the modern American catalogue.
Most people describe the experience as energetic, talkative and creative, which makes it a daytime plant by nature rather than by instruction. The rest of the sativa field sits in the High Rise strain library.