Alaskan Ice
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Alaskan Ice

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

Alaskan Ice is a sativa-dominant cross of White Widow and Haze from Green House Seeds, which the breeder temporarily withdrew from sale because of genetic instability.

Research as of 11/05/2026

According to Green House Seeds, a genetic anomaly occurs in 3 to 5 % of Alaskan Ice plants: affected specimens flower slowly and set hardly any flower clusters. The breeder therefore describes its cross of White Widow and Haze as not fully stable and aims the strain at seasoned growers who secure every plant with a cutting and select deliberately. Green House Seeds withdrew the seeds from its range for 2 years. According to the breeder, they returned because growers and hashish makers kept asking for them; the breeder emphasizes the strain's suitability for hashish and ice water extraction.

Cultivation:

Green House Seeds describes tall, heavily branching plants and recommends SCRoG or LST. Indoors the breeder gives 9 weeks of flowering and up to 800 g/m²; outdoors in the Northern Hemisphere it gives a harvest up to the 1st week of October with up to 1000 g per plant. Another strain description lists plant heights of up to 2.5 m for outdoor cultivation. While the breeder reserves the strain for seasoned growers, a further description rates it as easy to grow.

The documented indoor grows do not paint a uniform picture. In one, the plant stretched from around 35 to around 130 cm after the start of flowering, an increase of about 271 % as stated by the grower. It grew vigorously but slowly and produced only a few short side shoots; harvest came after 77 days. The other report describes rapid vegetative growth, strong stretching and many side shoots. There, flowering was finished after 65 days, though the grower considers up to 10 weeks possible. The two reports describe the dried buds as hard and compact and the yield as very high.

Genetics and Origin:

Green House Seeds names its in-house White Widow and Haze as parents; the breeder gives the ratio as 70 % sativa to 30 % indica. One strain description identifies the Haze parent as Original Haze from Cultivators Choice and points to phenotypes ranging from sativa-dominant to indica-dominant expression. Jordan of the Islands crossed Alaskan Ice with Blueberry to create Blue Ice.

Aroma and Flavor:

The breeder description, which a strain description reproduces, places the spicy, Haze-influenced aroma between the two parent strains. Other descriptions list nut, sweet chestnut and mint, plus earth and wood, sour and hashish-like notes, and pine in the flavor. Consumers report a sweet, earthy smell with menthol, in some cases also spicy or fruity hints; one found the taste mild and nutty. Strain descriptions name caryophyllene, myrcene and limonene as the defining terpenes in varying order, and one adds humulene.

Effects:

Green House Seeds describes a fast onset, cerebral at first, then with growing physical heaviness. User reports describe an uplifted, euphoric mood, creativity and focus, as well as talkativeness and giggling. One consumer names energy without restlessness; other reports mention physical relaxation with a clear head. One grow report gives an assessment of a relaxing, meditative effect that is at the same time slightly confusing and long-lasting. By contrast, one consumer found the effect weak and short. Reports name dry mouth as a side effect; strain descriptions add dry eyes and paranoia.

THC and CBD Content:

The THC figures in other strain descriptions range from 16 to 21.49 %. The description with the highest value additionally lists 1.05 % CBD and 1.78 % CBG; another puts CBD at 0 %.

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
focused
energetic
relaxed
Reported side effects
paranoid
dry eyes
dry mouth
Aroma & flavor
Mint Herbs Pine

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Cannabinoids & terpenes

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

THC
16–21.49 %
0 %35 %
CBD
0–1.05 %
0 %20 %
CBG
1.78 %
0 %10 %
Terpene profile
  • #1
    CaryophyllenePepper
  • #2
    MyrceneHerbs
  • #3
    LimoneneCitrus
  • #4
    HumuleneHops

Cultivation

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

Flowering & harvest
Breeder data
Flowering time
9 weeks
Outdoor harvest
up to the 1st week of October · Northern hemisphere
Yield & height
Breeder data
Yield indoor
up to 800 g/m²
Yield outdoor
up to 1,000 g/plant
Height outdoor
up to 250 cm

One grow report gives a stretch of ±271 % after the start of flowering, from about 35 to about 130 cm; no factor adopted.

Difficulty, environment & climate
Breeder data
Difficulty
Demanding
Indoor
suitable
Outdoor
suitable
Greenhouse
suitable
Morphology
Growth habit
Tall
Bud structure
Dense

Breeder: tall, branching plant; not 100 % stable, 3 to 5 % of plants with slow flowering and hardly any flower formation. Strain description: phenotypes from sativa- to indica-dominant. Grow report 1: vigorous, slow growth, few short side shoots. Grow report 2: fast vegetative growth, strong stretching, many side shoots. Both reports: dried buds hard and compact.

Training
LST
Recommended
ScrOG
Recommended

Breeder recommends SCRoG or LST.

Genetics & origin

Origin
Breeder data
Cross
White Widow × Haze
Type
Sativa-dominant
Available as seeds
Feminized
Flowering types (all versions)
Photoperiod
Original breeder
Greenhouse Seeds

Versions by different breeders

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

Greenhouse SeedsAlaskan Ice
Original
PhotoperiodFeminized
Flowering
9 weeks
Yield indoor
up to 800 g/m²
Yield outdoor
up to 1,000 g/plant

Cross of White Widow and Haze. According to the breeder not 100 % stable: in 3 to 5 % of plants a genetic anomaly with slow flowering and hardly any flower formation occurs. Sales were halted for 2 years and resumed because of demand from growers and hashish makers. Recommended for seasoned growers who secure and select every plant. Tall, branching plant, SCRoG or LST recommended. THC and CBD figure on the breeder page: N/A.

Community

17 grow and experience reports reviewed Community reports
Consensus

User reports describe an uplifted, euphoric mood with creativity and focus, plus talkativeness, giggling and in some cases physical relaxation with a clear head. Dry mouth is named as a side effect. Mint, menthol and earthy notes recur in the aroma. The two grow reports describe hard, compact buds and a very high yield.

Divergent reports

One consumer found the effect weak and short, another less stimulating than expected; one grow report describes it as relaxing, meditative and long-lasting. The two grow reports contradict each other in growth habit (slow with few side shoots versus fast with strong stretching and many side shoots) and in flowering time (77 versus 65 days).

Reported values from individual grows
Flowering time in an indoor grow report
77 days
Plant height at start of flowering in an indoor grow report
35 cm
Final height in an indoor grow report
130 cm
Stretch after start of flowering in an indoor grow report
271 %
Flowering time in a second indoor grow report
65 days
Flowering time the grower considers possible in the second report
up to 10 weeks

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Similar strains

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

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