You’d think with the number of years peonies have been growing in China, tobacco rattle virus would have been reported long ago. Not so, according to this article. It seems to be fairly recent and not very severe. Sure wish we could say the same thing in Alaska! It has been imported with the roots. Certain suppliers have more TRV than others. I guess the name of the game is, only buy from suppliers who routinely rogue out the disease before it gets to your fields.