More than 90% of California’s pot farms are infected with a crop-destroy disease
https://www.sfgate.com/cannabis/article/purple-colored-weed-save-california-cannabis-18175713.php
Interesting yes, definitive, probably not.
Scientists have discovered a type of purple-colored cannabis that appears to fight the widespread plant disease, which is called hop-latent viroid, or HLVd. HLVd damages cannabis plants and significantly reduces their value by decreasing the amount of active compounds, like THC, they produce.