Yes, you are correct. Just like with software, you have to check and verify all the sources, or at least have someone do it for you. This may mean buying from

Yes, you are correct. Just like with software, you have to check and verify all the sources, or at least have someone do it for you. This may mean buying from the farmer's market, or going to the farm itself. If you can't do that, you have to find a trustworthy supplier and take their word for it.