Sativa Dominant · Green House Seed Co.
Super Lemon Haze
Super Lemon Haze is Arjan Roskam's Lemon Skunk x Super Silver Haze cross that swept the High Times Cannabis Cup in 2008 and 2009 — back-to-back wins that put the strain on permanent rotation at Green House coffeeshops. The flavor is exactly what the name suggests: bright Meyer-lemon zest on the inhale with a faint skunk undertone that only shows up on long cures. Plants stretch aggressively in the first three weeks of flower and need a netted canopy or aggressive topping to keep colas within tent height. The high is one of the sharpest cerebral lifts in the Haze family, fast onset and clear-headed, which is why it has stayed a daytime productivity pick for fifteen years.
Reviewed 2026-05-23· Sources: seedfinder.eu, Green House catalogue, Cannabis Cup archive
Potency
- THC range
- 19–25%
- Typical THC
- 22%
- CBD
- up to 0.1%
Flowering
- Indoor weeks
- 9–10 wk
- Difficulty
- Moderate
- Climate
- Mediterranean, warm temperate
Yield & size
- Indoor
- 500-600 g/m²
- Outdoor
- 600-800 g/plant
- Height
- 140-180 cm
Indica / sativa ratio
Terpene profile
The aromatic compounds below shape how Super Lemon Haze smells, tastes, and ultimately feels in the body.
- dominant
Terpinolene
Piney and fruity — fresh, slightly floral, common in sativa-leaning cultivars.
- secondary
Limonene
Uplifting citrus — typically associated with mood elevation and stress relief.
- secondary
Caryophyllene
Peppery and spicy — the only terpene that binds CB2 receptors, studied for anti-inflammatory action.
- minor
Pinene
Alert and pine-forward — associated with mental clarity and bronchodilation.
Reported side effects
Lineage
Super Lemon Haze traces to Lemon Skunk × Super Silver Haze. The cross sits in the Haze family, which influences both the terpene profile and the flowering structure described above.
Genetic family tree
Documented parents and grandparents for Super Lemon Haze based on breeder catalogues. Library entries are clickable; ancestors not yet documented on this site appear in a lighter, non-linked box.
Strains crossed with Super Lemon Haze
Super Lemon Haze is a parent of 3 strains in the broader catalogue. These are crosses that carry Super Lemon Haze genetics on at least one side of the cross.
Grow profile
Grow profile
- Indica / sativa
- 20% / 80%
- Flowering days
- 63–70 days
- Stretch
- High
- Pest resistance
- High
- Mold resistance
- Moderate
- Training methods
- topping, scrog, supercropping
Feed schedule for Super Lemon Haze
These EC and NPK targets are starting points calibrated for the strain's Sativa lean and moderate difficulty rating — not gospel. Drop 15-20% off any EC ceiling on your first run and let the plant tell you where it actually wants to feed.
Suggested feed schedule
- Late veg
- 1.2-1.4 EC
- Early flower
- 1.3-1.5 EC, NPK 2-2-3
- Mid flower
- 1.6-1.8 EC, NPK 1-3-4
- Late flower
- 1.4-1.6 EC
- Final week
- Plain pH-balanced water for the last 7-10 days; light flush if you ran nutrients on the higher end.
Full breakdown of feed math, runoff testing, and salt buildup in our nutrient guide.
What to expect through the grow cycle
Super Lemon Haze is documented with a 10-week flower and a longer stretch phase typical of sativa-leaning hybrids. The visual below maps a documented 14-week cycle built from 4weeks of vegetative growth and the strain's published flowering window.
Published grow reports for Super Lemon Haze concentrate the most observational notes on the stretch window. This timeline is descriptive — it reflects what reports document, not a how-to. Actual week-to-week behaviour varies with phenotype, light intensity, pot size, and environment.
Phase details
- Veg (weeks 1-4)
- The documented vegetative period for Super Lemon Haze. Plants establish root structure, leaf canopy, and node count before flower triggering, with a moderate difficulty rating shaping how forgiving the early canopy work tends to be.
- Stretch (weeks 5-8)
- Super Lemon Haze is documented as having high stretch. Reports describe the plant roughly doubling in height during this phase as the sativa-leaning structure establishes its final flowering frame.
- Bud sites (weeks 9-10)
- Pre-flowers form at the nodes and calyxes begin to develop. Grow reports for Super Lemon Hazenote this as the window where the canopy's eventual bud distribution becomes visible.
- Bud development (weeks 11-12)
- Flowers thicken and calyxes fatten through this phase. Documented Super Lemon Haze runs show the bulk of visible flower mass accumulating here, with resin production accelerating toward the end.
- Ripening (week 13)
- Trichomes transition from clear toward cloudy and amber. Reports for Super Lemon Haze describe the Terpinolene-led terpene profile maturing through this window, with aroma sharpening week over week.
- Final (week 14)
- Calyx swelling is documented as complete and the harvest window opens. Published Super Lemon Haze runs end here, within the 9-10 week flowering range reported by the breeder.
Flavor & aroma
Reported effects
Awards
- 2008 · High Times Cannabis Cup — 1st
- 2009 · High Times Cannabis Cup — 1st
Common questions about Super Lemon Haze
Does Super Lemon Haze always taste like lemon?
The dominant phenotypes deliver a true Meyer-lemon note from terpinolene and limonene working together. Off-pheno expressions lean more skunk than lemon — usually about one in eight from a regular pack.
How much does Super Lemon Haze stretch?
Expect a 200 to 300 percent stretch from flip to finish. Flip plants when they are 20 to 25 cm tall in tents under 1.8 m.
Breeder of record
Green House Seed Co.
View breeder profile and other strains →
More from Green House Seed Co.
Strains similar to Super Lemon Haze
These picks lean on the same terpene profile and parent genetics as Super Lemon Haze — shared dominant terps, overlapping lineage, and matching indica/sativa lean. No star ratings or popularity contests, just overlap on the traits that actually drive a similar grow and smoke.