Island Sweet Skunk
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Island Sweet Skunk

also known as Sweet Island Skunk, ISS, Island Skunk

Sativa-dominantTHC-dominant

Island Sweet Skunk is a sativa-leaning strain from Vancouver Island that traces back to Sweet Skunk and has cup placements to its name; its exact lineage is disputed.

Research as of 10/27/2026

In 2011, Island Sweet Skunk took 3rd place in the sativa category at the High Times Medical Cannabis Cup in Denver, entered by Grassroots Wellness. A strain overview lists a 6th place in the same category for the Karma Cup 2015. The plant comes from Vancouver Island, where, according to Federation Seed Company, it was grown for many years as a stabilized cross of sativa and skunk before the company released it as seed.

Genetics and Origin:

The starting point is Sweet Skunk from Spice of Life Seeds. Its breeder Steve bred it from Sweet Pink Grapefruit; the father was initially thought to be Big Skunk, and Steve later suspected a male NL x Haze as the pollen donor. Federation Seed Company lists Sweet Skunk and White Widow as the parents of Island Sweet Skunk, but adds the qualifier “probably” to this attribution. Other strain descriptions give Sweet Pink Grapefruit and Skunk #1 as the parent pair, and another gives only Skunk #1 and an unknown sativa. The lineage is therefore not confirmed.

Other names are Island Skunk, Sweet Island Skunk and ISS. Federation Seed Company crossed the strain with Romulan to make Remus, and it also appears as a parent of Golden Goat.

Versions from Different Breeders:

Federation Seed Company offered Island Sweet Skunk only as regular seeds and states 8 to 9 weeks of flowering and a height of up to 9 feet (around 2.7 m) outdoors. Next Generation Seed Company offers regular and feminized seeds, states about 63 days of flowering and names indoor, outdoor and greenhouse as growing locations. Outdoors, this version is said to ripen in mid to late October south of the 40th parallel; the breeder mainly emphasizes its strong smell.

Sweet Island Skunk comes from B.C. Bud Depot, a line that traces back to Island Sweet Skunk. The breeder puts the sativa share at 70 %, states 8 weeks of flowering indoors and harvest in late September outdoors, and lists only regular seeds. This version is listed as the winner of the Treating Yourself Medical Marijuana Cup 2012.

Cultivation:

After the onset of flowering, the plant stretches considerably according to Federation Seed Company, by up to 24 inches (around 61 cm) indoors and up to 60 inches (around 152 cm) outdoors. The flowers stay loose at first, gain mass from week 5 and become markedly denser in the last 2 weeks. According to the breeder, large plants need to be tied up in week 7 or 8 because the main shoots become heavy. Other strain descriptions give a flowering time of 7 to 9 weeks.

A documented indoor grow with seeds from Next Generation Seed Company needed around 90 days of flowering, clearly longer than the breeder states. The plant reached about 4 feet (around 1.2 m), formed long, strong side branches and yielded about 6 ounces (around 170 g), weighed after one week in the jar. In the report it is considered suitable for beginners and undemanding in feeding, but sensitive to over- and underfeeding; no mold appeared, it was well suited to SCROG, and supports were needed during flowering. The flowers there turned out hard and compact, whereas a consumer report describes airy, easily crumbling flowers.

Aroma and Flavor:

Strain descriptions put skunk, tropical fruit and grapefruit in the foreground, with citrus, pine, earth and herbs behind them. User reports mention sweet fruit with a skunky finish, lime, grapefruit peel or a spicy note; one consumer found the taste hay-like. Strain descriptions name myrcene and terpinolene as the dominant terpenes, and one also lists pinene.

Effects:

The consensus in user reports is an activating, uplifted effect with a clear head; creativity, concentration, euphoria and talkativeness are also mentioned. Some consumers found the strain rather relaxing to sleepy, others found it weak or described an abrupt fading. One report rates indoor material clearly better than outdoor material. The breeder texts from Federation Seed Company and B.C. Bud Depot differ and describe a heavy, indica-like effect.

Side effects mentioned are dry mouth, dry eyes and nervousness, occasionally paranoia and an urge to cough, in one case severe headaches.

THC and CBD Content:

Strain descriptions give 18 to 20 % THC. Measured values appear in a 2020 recall notice from the Canadian health authority Health Canada, triggered by THC figures on the label that were too low: for 2 batches of this strain it states actual total THC contents of 15.6 and 18.0 % with 0 mg/g CBD. Such values vary by batch, cultivation and phenotype.

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
sleepy
focused
energetic
Reported side effects
Headache
anxious
paranoid
Aroma & flavor
Herbs Pine Spicy

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
15.62–17.99 % Lab value (2 samples)
18–20 %additional figure
0 %35 %
CBD
0 % Lab value (2 samples)
0 %20 %
CBG
1 %
0 %10 %
Terpene profile
  • #1
    MyrceneHerbs
  • #2
    TerpinoleneFruity
  • #3
    LinaloolFlowers
  • #3
    PinenePine

Cultivation

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

Flowering & harvest
Breeder data
Flowering time
8–9 weeks
Outdoor harvest
Mid-October (October 15) · Northern hemisphere
Yield & height
Breeder data
Height outdoor
274 cm

According to the breeder, stretch of up to 24 inches (≈ 61 cm) indoors and up to 60 inches (≈ 152 cm) outdoors; no factor given.

Difficulty, environment & climate
Community reports
Difficulty
Easy
Indoor
suitable
Outdoor
suitable
Resistances
Community reports
Mold
High
Morphology
Growth habit
Tall

Breeder: flowers loose at first, gaining from the 5th week of flowering, markedly denser in the last 2 weeks; tie up large plants in week 7 or 8. Grow report: long, strong side branches, hard and compact flowers. One consumer report describes airy, crumbly flowers.

Training
ScrOG
Recommended
Support needed
Yes

Grow report: well suited to SCROG, supports needed during flowering; breeder: tie up large plants in week 7 or 8.

Other
Breeder data
Odor during flowering
High
Nutrient demand
Low

Genetics & origin

Origin
Breeder data
Cross
Sweet Skunk × White Widow
Origin
KA, Vancouver Island
Type
Sativa-dominant
Available as seeds
Regular, Feminized
Flowering types (all versions)
Photoperiod
Original breeder
Federation Seed Company
Awards
  • Karma Cup 2015Sativa · Place 6
  • Treating Yourself Medical Marijuana Cup 2012Winner
  • High Times Medical Cannabis Cup Denver 2011Sativa · Place 3

Versions by different breeders

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

Federation Seed CompanyIsland Sweet Skunk
Original
PhotoperiodRegular
Flowering
8–9 weeks
Height outdoor
274 cm

According to the breeder, long grown on Vancouver Island as a stabilized sativa-skunk cross; parents Sweet Skunk × White Widow marked as probable; never offered as feminized seeds; height outdoors 9 feet (≈ 274 cm).

B.C. Bud DepotSweet Island Skunk
Reproduction
PhotoperiodRegular
Flowering
8 weeks

Line that traces back to Island Sweet Skunk; 70 % sativa / 30 % indica; outdoor harvest late September; regular seeds only; listed as winner of the Treating Yourself Medical Marijuana Cup 2012.

Next Generation Seed CompanyIsland Sweet Skunk
Relation unclear
PhotoperiodRegularFeminized
Flowering
63 days

Lineage given as Sweet Skunk × White Widow (unconfirmed); breeder emphasizes the strong smell; suited to indoor, outdoor and greenhouse; outdoor harvest mid to late October south of the 40th parallel.

Lab results

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

Flower · 2020nicht angegeben (Messwert aus Rückrufmeldung von Health Canada)
THC15.62 %
CBD0 %
Flower · 2020nicht angegeben (Messwert aus Rückrufmeldung von Health Canada)
THC17.99 %
CBD0 %

Community

41 grow and experience reports reviewed Community reports
Consensus

Activating, uplifted effect with a clear head; creativity, concentration, euphoria and talkativeness are mentioned. Aroma sweet and fruity with skunk, citrus and grapefruit.

Divergent reports

Individual reports describe a relaxing to sleepy effect, a weak effect or an abrupt fading; occasionally paranoia, nervousness, an urge to cough and in one case severe headaches. One report rates indoor material clearly better than outdoor material. Breeder texts speak of a heavy, indica-like effect. Grow report: hard, compact flowers; one consumer report: airy flowers.

Reported values from individual grows
Flowering duration in an indoor grow (seeds from Next Generation Seed Company)
90 days
Plant height in an indoor grow (≈ 1.2 m)
4 feet
Yield of one plant in an indoor grow, weighed after one week in the jar (≈ 170 g)
6 ounces

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Similar strains

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

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