OG #18
aka Private Reserve OG, Private Reserve, OG 18HybridTHC range is the middle half of 300 public lab tests of OG #18 flower (2020–2024). Source: Cannlytics lab results, CC BY 4.0.
About OG #18
OG #18 is a cross-bred hybrid. You may also see it sold as Private Reserve OG, Private Reserve, OG 18. The effects people mention most are feeling relaxed, sleepy and euphoric.
THC and potency
Public lab results give a good picture of its strength: 300 flower samples tested between 2020 and 2024 came in at a median of 21.4% total THC (the middle half ranged from 19.7% to 23.5%). CBD is typically negligible (under 0.5%). 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
In lab tests its dominant terpene is myrcene, followed by caryophyllene and limonene. Myrcene is known for earthy, musky notes with a ripe-fruit edge, while caryophyllene adds black pepper and warm spice. Total terpene content measured a median of 1.5%. Consumers most often describe the flavour as diesel, pungent and pine.
Reported effects
Beyond feeling relaxed, reviewers also mention feeling tingly and happy. Some consumers say they reach for it when dealing with stress, pain and anxiety. The side effects mentioned most are dry eyes, dry mouth and headaches. These are personal reports, not medical advice.
OG #18 in Canada
Our Canadian catalogue lists 2 products made with OG #18, mostly edibles, from brands including Olli Brands. Availability differs by province and store.
Genetics
OG #18 is also a parent of OG Skunk and Tahoe Hydro OG.
OG #18 terpenes
Median share of flower weight in lab tests.
- pinene0.07%
- myrcene0.43%
- humulene0.12%
- limonene0.28%
- linalool0.06%
- bisabolol0.01%
OG #18 products in Canada
Strains similar to OG #18
Matched on reported effects, terpenes and type.
OG #18 FAQ
- How strong is OG #18?
- In 300 public lab tests, OG #18 flower had a median of 21.4% total THC; most samples were between 19.7% and 23.5%.
- Is OG #18 an indica or a sativa?
- OG #18 is generally classed as a hybrid.
- What does OG #18 smell like?
- Its main terpene is pinene (pine), and people describe the flavour as diesel, pungent, pine.
- Can I buy OG #18 in Canada?
- Yes. Our Canadian catalogue lists 2 OG #18 products; availability varies by province and store.