G13


About this product
Master Kush Ultra is a cross between G-13 and OG Kush and is a legacy strain dating back 15 years. Its tightly packed buds are dark green in colour, and the nose is woody and peppery with hints of orange or citrus. This indica strain is grown hydroponically with flood tables and soilless medium, and each plant is fed by Dosatron nutrient delivery system. The flowers are hung to dry before being meticulously trimmed. Expect a one-of-a-kind taste and a smoke that is absolutely loaded with THC. This was a favourite cultivar of BC retailers, many who kept it on a secret menu, such as a former legacy retailer THC, who labelled it as ‘certified gas’.

About strain
G13 strain illustration
Indica
4(1183)

About G13

G13 is an indica-leaning strain. You may also see it sold as G-13, G Thirteen. People who try it most often describe feeling sleepy, euphoric and hungry.

THC and potency

Public lab results give a good picture of its strength: 25 flower samples tested between 2022 and 2024 came in at a median of 16% total THC (the middle half ranged from 14.5% to 17.6%). That is in line with most flower on Canadian shelves. Potency varies by grower and batch, so always check the label.

Aroma, flavour and terpenes

Its reported terpene profile is led by myrcene, with limonene and caryophyllene. Myrcene is known for earthy, musky notes with a ripe-fruit edge, while limonene adds bright citrus-peel freshness. Consumers most often describe the flavour as pine, earthy and woody.

Reported effects

Beyond feeling sleepy, reviewers also mention feeling happy and tingly. Some consumers say they reach for it when dealing with stress, pain and anxiety. The side effects mentioned most are dry mouth, dry eyes and dizziness. These are personal reports, not medical advice.

G13 in Canada

Our Canadian catalogue lists 12 products made with G13, mostly flower and pre-rolls, from brands including BC Black, Haven St. Premium Cannabis, 18twelve and Choice Growers. Availability differs by province and store.

Genetics

G13 is also a parent of Mr. Nice Guy, MK Ultra, Liberty Haze, Killer Queen, C13 Haze and Cinnamon Buddha.

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