Then & WOW – History of THC potency

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Original Photo by Dariusz Sankowski /

Things have gotten out of hand- in the best possible way. The quality and strength of cannabis available nowadays is unprecedented. Whether you use it recreationally or medicinally, high demand and legalization have pushed growers to reach new limits.

THC is the chemical in cannabis responsible for most of it’s pleasing effects. It attaches to, and activates, your cannabinoid receptors. Poof. You’re high. Let’s explore past and present THC potency so we can fully appreciate how far we’ve come.

1960 to 1970: Ranging from .2 to 1%

1980 to 1990: Ranging from 1 to 3.5%

2000 to 2010: Ranging from 5.4 to 10.96%

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Fast forward to 2018 and cannabis is now legal for medicinal use in 30 states, and recreationally in 9 states. There is no better time as THC levels currently reach as high as 28% or more. The average potency level for flower available here in Oregon ranges from 18 to 28%. It’s an epic time to be a stoner. Remember at this potency, less is definitely more.

Signing off with a few of the most potent strains as listed on article What Are The Strongest Cannabis Strains?

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Photo by Michael Fischer /


Girl Scout Cookie (Hybrid) – 20% or higher

GG4 (Hybrid) – Mid to upper 20%

Bruce Banner (Hybrid) – 30% or higher

Ghost Train Haze (Hybrid) – 25% or higher

Let me know in comments if you know of any especially potent strains. I love Bruce Banner and am now on the hunt for Ghost Train Haze. Yes please!