Okay, here's what I did. I added QR codes to your plant list view. So when you're viewing your plant list, check off the box to show the QR codes and it'll include the QR code for each plant under the thumbnail.
Now if you want to view just the QR code and not the thumbnail, then click on the print-friendly version at the top-right. That'll show the list of plants with QR codes and little else. Check it out and let me know if this suits your request.
