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.