Super Lemon Haze
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Super Lemon Haze

also known as SLH

Sativa-dominantTHC-dominant
Indica 30 % Breeder dataSativa 70 %

Super Lemon Haze crosses Lemon Skunk with Super Silver Haze, comes from the Green House Seed Company in Amsterdam, and won the High Times Cannabis Cup in 2008 and 2009.

Research as of 09/20/2026

The name promises lemon, but terpene analysis names a different molecule first: in a flower sample tested by Confidence Analytics in 2019, terpinolene led with 0.84 %, ahead of ocimene at 0.52 % and myrcene at 0.29 %, with 2 % total terpenes. Super Lemon Haze was created by the Green House Seed Company in Amsterdam from Lemon Skunk and Super Silver Haze and took first place at the High Times Cannabis Cup in both 2008 and 2009.

Aroma and Flavor:

A sweet-sour lemon aroma with lime and a skunk undertone is described, accompanied in flavor by candy, earthy, and spice notes. Grow reports attribute passion fruit and violet to individual plants, while other phenotypes smell barely of lemon and instead distinctly of haze. In late flowering the smell becomes sharp and penetrating; growers compare it to lemon-scented cleaning product.

Lab Results:

A 2012 series of 10 samples tested by thin-layer chromatography found 15 to 26 % THC, 0.2 to 0.5 % CBD, 0.2 to 1.5 % CBG, and 0.2 to 1 % THCV; CBN was not detected in any sample. The single measurement by Confidence Analytics from 2019 showed 19 % THC. Values vary depending on batch, cultivation, and phenotype. For medical flower of this strain, one producer declares 24 % THC and under 1 % CBD. Aggregated lab analyses also list terpinolene ahead of caryophyllene and myrcene, even though the name suggests limonene.

Genetics and Origin:

Arjan Roskam and Franco Loja of the Green House Seed Company are credited as the creators; the company lists the feminized version as 70 % sativa and 30 % indica. The lineage is disputed, however: Colin Gordon of Ethos Genetics describes the original cut as a cross of Jack Herer and a Lemon Skunk that was only distributed as a clone, and states that Green House outsourced propagation to third parties, which led to different cuts circulating under one name. Awards, besides the two wins in 2008 and 2009, include first place at the IC420 Growers Cup in 2010, second place at the High Times Cannabis Cup the same year, and first place at ExpoGrow in Irún in 2013. Documented descendants include Franco's Lemon Cheese and the CBD-rich variant Super Lemon Haze CBD, both from Green House, as well as Lemon OG Haze from Ethos Genetics.

Effects:

User reports describe a fast onset and a long duration. They mention activating, clear-headed, euphoric, and talkative states with a noticeable physical component; at higher doses or with little experience, consumers report a confusing, strongly cerebral impression. Reported side effects include dry mouth and dry eyes, less often dizziness and anxious reactions.

Cultivation:

Green House Seed Company states a flowering time of 10 weeks for the feminized original version, yields of up to 800 g/m² indoors and up to 1200 g per plant outdoors, with harvest in mid-October in the northern hemisphere. Other strain descriptions instead give 9 to 10 weeks, up to 700 g/m², and a harvest window in late October. In grow reports, actual flowering time ranges from 55 to 80 days, with one report citing 89 days to full ripeness.

After the switch to 12/12, height doubles to triples, which is why topping, LST, and SCROG are consistently recommended, and the long flower spikes need nets or stakes. Variation from seed is considerable: bushy, Christmas-tree-shaped, and lanky plants occur side by side; feminized seed showed a tendency toward hermaphroditism in several reports, and mold occurred occasionally. Resin coverage is described as very heavy, difficulty as moderate; Mediterranean conditions are considered favorable, and indoor, outdoor, and greenhouse cultivation are all documented.

Versions from Different Breeders:

Besides the photoperiod version, Green House also offers a cross with ruderalis: 7 weeks of flowering with a 9-week total cycle, 80 to 100 cm in height, up to 500 g/m² indoors, 70 to 80 g per plant outdoors, and 21.10 % THC and 0.94 % CBD according to the breeder. Canuk Seeds states for its feminized version 70 days of flowering, 500 to 750 g/m² indoors, up to 1000 g per plant outdoors, and 22 % THC. Ethos Genetics sells regular seed under the same name from its own rebreeding project with a different pedigree, Jack Herer with Lemon Skunk, and gives 8 to 9 weeks of flowering, 24 to 27 % THC, and 1 to 2 % CBD.

This article is for informational purposes only and is not a substitute for medical or therapeutic advice. If you have any health-related questions, please consult a doctor or another qualified professional.

Effects & aroma

From reviews and experience reports — subjective, not a medical statement

Reported as positive
focused50 %
energetic50 %
euphoric50 %
Reported side effects
anxious50 %
dizzy25 %
paranoid25 %
Aroma & flavor
Lemon 75 % Spicy 25 % Sour 25 %

Percentages: share of reviews mentioning this property.

Cannabinoids & terpenes

Levels vary by batch, phenotype and cultivation — values are indicative

THC
15–26 % Lab value (12 samples)
18.6 %additional figure
0 %35 %
CBD
0–0.5 % Lab value (11 samples)
0.09 %additional figure
0 %20 %
CBG
0.2–1.5 % Lab value (10 samples)
1.2 %additional figure
0 %10 %
CBN
0 % Lab value (10 samples)
0 %10 %
THCV
0.2–1 % Lab value (10 samples)
0 %10 %
Terpene profile
  • #1
    TerpinoleneFruity
    0.84 % Lab value
  • #2
    OcimenMint
    0.52 % Lab value
  • #3
    MyrceneHerbs
    0.29 % Lab value
  • #4
    CaryophyllenePepper
    0.4 %
  • #5
    LimoneneCitrus

Cultivation

Indicative values from breeder data and grow reports — varies by phenotype and setup

Flowering & harvest
Breeder data
Flowering time
10 weeks
Outdoor harvest
mid-October · Northern hemisphere
Yield & height
Breeder data
Yield indoor
up to 800 g/m²
Yield outdoor
up to 1,200 g/plant
Stretch after flip
2–3 ×

Grow descriptions cite a doubling to tripling of height in the first 2 to 3 weeks after switching to 12/12.

Difficulty, environment & climate
Difficulty
Medium
Indoor
suitable
Outdoor
suitable
Greenhouse
suitable
Climate
Mediterranean, Warm

Mediterranean conditions are described as favorable; another supplier cites tropical to equatorial locations.

Morphology
Trichome coverage
High

Considerable phenotype variation: bushy, Christmas-tree-shaped, and lanky plants are described; side branches medium to long. Resin coverage is described in reports as very heavy. Accounts of bud structure conflict (compact and dense versus elongated and loose).

Training
Topping
Recommended
LST
Recommended
ScrOG
Recommended
Support needed
Yes

Nets, stakes, or bamboo are mentioned for supporting the long flower spikes; SCROG is described as the most effective method.

Other
Community reports
Odor during flowering
High
Phenotype variance
High

Genetics & origin

Origin
Breeder data
Cross
Lemon Skunk × Super Silver Haze
Origin
Nicaragua, Amsterdam
Type
Sativa-dominant
Available as seeds
Feminized, Regular, Autoflowering
Flowering types (all versions)
Photoperiod, Autoflowering
Original breeder
Green House Seed Company
Parents (2)
Super Silver HazeSativa · THC 20–21 %
Lemon SkunkHybrid · THC max. 19 %
Descendants (7)
Zelly’s GiftSativa · THC max. 18 %
White LemonHybrid · THC max. 19 %
Awards
  • High Times Cannabis Cup Massachusetts 2021Sativa · Place 1
  • ExpoGrow Irún 2013Place 1
  • ExpoGrow Irún 2012Place 2
  • Seattle Medical Cup 2012Place 1
  • High Times Cannabis Cup 2010Place 2
  • IC420 Growers Cup 2010Place 1
  • High Times Cannabis Cup 2009Place 1
  • High Times Cannabis Cup 2008Place 1

Versions by different breeders

Several breeders sell their own versions under this name. Each figure comes from the respective breeder.

Green House Seed CompanySuper Lemon Haze
Original
PhotoperiodFeminized
Flowering
10 weeks
Yield indoor
up to 800 g/m²
Yield outdoor
up to 1,200 g/plant

Feminized original version, Lemon Skunk x Super Silver Haze, 70 % sativa / 30 % indica.

Ethos GeneticsSuper Lemon Haze
Different genetics
PhotoperiodRegular
Flowering
8–9 weeks
THC
24–27 %
CBD
1–2 %

Own rebreeding project from Jack Herer x Lemon Skunk, only as regular seed; total cannabinoids given as 25 to 30 %.

Canuk SeedsSuper Lemon Haze
Reproduction
PhotoperiodFeminized
Flowering
70 days
Yield indoor
500–750 g/m²
Yield outdoor
up to 1,000 g/plant
THC
22 %

Same parentage as the original version; stated for indoor, outdoor, and greenhouse cultivation.

More breeders (9): Aficionado Seed Bank, ApeOrigin, BSF Seeds, Linda Seeds, Lineage Genetics, Massive Seeds, Seeds66, Semyanich, United Cannabis Seeds

Lab results

Measurements of individual samples. Values vary by batch, cultivation and phenotype.

Overview of all samples12 samples · 3 labs · 2012–20191 medical batches, anonymised
THC15–26 %
THCA13–24 %
CBD0–0.5 %
CBG0.2–1.5 %
CBN0 %
THCV0.2–1 %
Total terpenes2 %
Terpinolene up to 0.84 %Ocimen up to 0.52 %Myrcene up to 0.29 %

Community

25 grow and experience reports reviewed Community reports
Consensus

Reports agree on the strong stretch after switching to 12/12, the high support needs of the long flower spikes, and the intense, sharp lemon smell in late flowering. The effect is consistently described as fast-acting, strong, and long-lasting.

Divergent reports

Flowering time in individual reports ranges from 55 to 80 days. Phenotypes differ markedly: bushy, Christmas-tree-shaped, and lanky plants, some with barely noticeable lemon notes. Feminized seed showed a tendency toward hermaphroditism in several reports. Accounts of nutrient demand conflict: one report warns against overfeeding, while another description calls high EC values unproblematic.

Reported values from individual grows
Flowering time in grow reports (range of individual figures)
55–80 days
Flowering time to full ripeness in one grow report
89 days

Similar strains

Related genetics, same dominant terpene, similar effects and aroma — excluding direct parents and descendants

Reviews (3)

ReviewReview the strain to help others
l.........u5/7/2024
energetic
excited
talkative
anxious
Pepper
Lemon

Schöne Sorte um mal auf ein Konzert zu gehen. Aber rel stark, daher etwas mit vorsichtig zu genießen. Hatte die Super lemon Haze (Fem) von BFS Seeds.

Helpful (3)
Not helpful
d.........87/24/2025
creative
euphoric
focused
happy
relaxed
Lemon

Nice Strain

Helpful
Not helpful