That's a good question. If you're getting that text from the Organic Tobacco juice page I think they are referring to the tobacco itself, that it is certified organic and then they use PG to extract the flavor.
Are there are other juices vendors out there using the term organic?
Searching the web I see there are a lot of organic flavorings available, but I have no idea where Vaperite gets their flavorings. It seems they make their own tobacco flavor from organic tobacco though.