Dr Greenthumb’s Em-Dog
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Dr Greenthumb’s Em-Dog

also known as EM Dog, Em-Dog, EmDog, Dr Greenthumb's Em-Dog by B-Real

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

Dr Greenthumb’s Em-Dog crosses OG Kush with Chemdawg #4; Keif Sweat bred the strain for B-Real of Cypress Hill, and the seed comes from Humboldt Seed Organization.

Research as of 10/26/2026

Keif Sweat, a breeder in the band’s circle, crossed an OG Kush with phenotype #4 of Chemdawg for B-Real, co-founder of Cypress Hill. Humboldt Seed Organization lists the result as Dr Greenthumb’s Em-Dog and releases it exclusively as feminized seed. Grow reports on the strain go back to 2015. The descriptions disagree mainly on whether indica or sativa predominates.

Genetics and Origin:

In the breeder’s description, which reproduces another strain description, the OG Kush used carries the nickname Crippy and is listed as selection OGK3; the pedigree from the same source, by contrast, lists OGK4. There Em-Dog is also called an elite cutting from the USA.

Humboldt Seed Organization gives 70 % indica and 30 % sativa, and other strain descriptions adopt this ratio. Another states 60 % sativa and 40 % indica instead, and a flower producer classes the strain as a sativa-leaning hybrid. One grow report likewise describes growth and appearance as rather sativa-like.

Andina Seeds has crossed Em-Dog into several of its own strains: DR OG came from Em-Dog × Em-Dog, Tangerine OG from Tangie × Em-Dog and Super Lemon Kush from Super Lemon Haze × Em-Dog. At Sur Genetics, Em-Dog is a parent of Dr. Dog Mandarine together with Red Mandarine F1 Fast.

Aroma and Flavor:

Humboldt Seed Organization describes notes of tropical fruit, lemon, exotic wood and pine with an oily undertone; customer reviews on the breeder’s site add fuel and gas notes. In grow reports lemon, pine and earth come first, while other descriptions add a sweet component. One producer ranks diesel, pine and citrus above the tropical base aroma.

THC and CBD Content:

Humboldt Seed Organization states 22 to 27 % THC with 0.1 % CBD. Other strain descriptions give 20 to 27 % THC, and one merely 14 % THC plus 2 % CBG. The same description lists myrcene as the predominant terpene, followed by caryophyllene and ocimene.

Effects:

According to the breeder, Em-Dog acts slightly more physical than cerebral and moves into a long-lasting relaxation. Dinafem describes the course as a cerebral effect setting in first, which then leads into relaxation.

In grow reports the effect is considered relaxing and calming, strong and long-lasting. Other user reports mention euphoria, elevated mood, creativity and concentration, some also drowsiness. A producer, by contrast, describes the strain as stimulating. As side effects, individual reports mention dry mouth and headaches.

Cultivation:

For indoor growing, Humboldt Seed Organization gives 63 to 68 days of flowering and 450 to 600 g/m². Outdoors, according to the breeder, harvest takes place in mid-October; the plants reach 3 to 4 m there and yield 1000 to 2000 g per plant. As climate, the breeder names warm, dry regions of temperate or Mediterranean character and also lists the greenhouse as suitable. Dinafem describes medium-sized plants with a sturdy structure and medium internodal spacing, Humboldt Seed Organization thick, compact buds with dense resin coverage.

Another strain description differs markedly: 8 to 9 weeks of flowering, harvest in late September, 450 to 500 g/m² indoors and 600 to 900 g per plant outdoors. A further description rates the difficulty as moderate.

Community Experiences:

The indoor grow reports evaluated give a flowering time of about 60 days. After the start of flowering, the plants stretched by 47 to 180 % and ended at 70 to 110 cm. A fir-tree-shaped, stable growth is described; the number of side shoots ranges from few to many. The dried buds are considered hard and compact, the ratio of flower to leaf mass good.

2 reports highlight tolerance of temperature fluctuations and fertilizing errors, 2 mention low susceptibility to mold, one of them additionally good tolerance of low temperatures. One grower recommends supporting the plants in flowering, another reports uniform results in a SCROG net. A further report highlights compact growth and early onset of flowering. In customer reviews on the breeder’s site, phenotypes leaning either toward the OG or the Chem side are mentioned. Unlike the moderate difficulty rating, 2 grow reports consider the strain suitable for beginners.

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
hungry
sleepy
focused
Reported side effects
Headache
paranoid
dry mouth
Aroma & flavor
Pine Wood Earth

No reviews yet — information from the strain description. Rate the strain to see shares.

Cannabinoids & terpenes

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

THC
22–27 % Breeder data
20–27 %additional figure
0 %35 %
CBD
0.1 % Breeder data
0.1 %additional figure
0 %20 %
CBG
2 %
0 %10 %
Terpene profile
  • #1
    MyrceneHerbs
  • #2
    CaryophyllenePepper
  • #3
    OcimenMint

Cultivation

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

Flowering & harvest
Breeder data
Flowering time
63–68 days
Outdoor harvest
mid-October · Northern hemisphere
Yield & height
Breeder data
Yield indoor
450–600 g/m²
Yield outdoor
1,000–2,000 g/plant
Height outdoor
300–400 cm
Stretch after flip
1.47–2.8 ×

Stretch after start of flowering in individual indoor grow reports: 47 % (from 75 to about 110 cm), 167 % (from 30 to about 80 cm) and 180 % (from 25 to about 70 cm); individual values in community.reported_values.

Difficulty, environment & climate
Breeder data
Difficulty
Medium
Indoor
suitable
Outdoor
suitable
Greenhouse
suitable
Climate
Warm, Dry, Temperate, Mediterranean

The breeder additionally names sunny locations.

Resistances
Community reports
Mold
High
Cold
High
Morphology
Growth habit
Christmas-tree shape
Internode spacing
Medium
Bud structure
Dense
Trichome coverage
High
Calyx-to-leaf ratio
High

Grow reports: fir-tree-shaped, stable growth, rather sativa-like appearance (1 report); side shoots from few to many; dried buds hard and compact; good ratio of flower to leaf mass. Dinafem: medium-sized plants with a sturdy structure and medium internodal spacing. Humboldt Seed Organization: thick, compact, resin-rich buds. Customer reviews on the breeder’s site: phenotypes leaning toward the OG or the Chem side.

Training
ScrOG
Tolerated
Support needed
Yes

One grow report recommends supports during flowering; one user report states uniform results in a SCROG net.

Other
Community reports
Nutrient demand
Low

Genetics & origin

Origin
Breeder data
Cross
OG Kush × Chemdawg #4
Origin
United States
Type
Indica-dominant
Available as seeds
Feminized
Flowering types (all versions)
Photoperiod
Original breeder
Humboldt Seed Organization

Versions by different breeders

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

Humboldt Seed OrganizationDr Greenthumb's Em-Dog by B-Real
Original
PhotoperiodFeminized
Flowering
63–68 days
Yield indoor
450–600 g/m²
Yield outdoor
1,000–2,000 g/plant
Height outdoor
300–400 cm
THC
22–27 %
CBD
0.1 %

Cross by Keif Sweat according to the breeder (“Kief Sweat” on the breeder’s site) for B-Real of Cypress Hill; Dinafem lists the same genetics with identical details.

Community

12 grow and experience reports reviewed Community reports
Consensus

Indoor grow reports give about 60 days of flowering, fir-tree-shaped, stable growth and hard, compact buds with a good ratio of flower to leaf mass. 2 reports mention tolerance of temperature fluctuations and fertilizing errors, 2 low susceptibility to mold, 2 consider the strain suitable for beginners. The effect is mostly described as relaxing and calming, along with euphoria, elevated mood, creativity and concentration.

Divergent reports

Number of side shoots from few to many; stretch between 47 and 180 %; individual reports mention drowsiness, one producer describes the strain as stimulating. Customer reviews on the breeder’s site mention phenotypes leaning toward the OG or Chem side. Individual reports mention dry mouth and headaches.

Reported values from individual grows
Flowering time in indoor grow reports
60 days
Stretch after start of flowering in one grow report
47 %
Stretch after start of flowering in one grow report
167 %
Stretch after start of flowering in one grow report
180 %
Final height in one grow report
110 cm
Final height in one grow report
80 cm
Final height in one grow report
70 cm
Cultivation year of a grow report
2,015 year

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Similar strains

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

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