Cannabis strains don’t always produce the effects they’re supposed to. That’s because they may not have the terpene profile they’re supposed to. Jeff Cole created the TerpTypes system for consumers and professionals to make sense of Cannabis based on terpene profiles. This study reviewed hundreds of terpene profiles from highly-regarded sources and quickly found three professional growers had substitutions. Professionals and consumers can easily find substitutions (the wrong strain) and correct them with the simple tools and methods described inside. The terpene profile reference is enlightening, too. Flip to the profile you love and find similar strains in the adjacent pages. There’s an alphabetical index of strains in case you want to find your way by strain name.