I started using 2" round sticker labels, they can be found on amazon. I think I got 250 on a roll for about $10 or so. Should last quite a while! I didn't get the pink ones, I went with the brown color. But you can get them in just about any color. Easy to peel off the roll and use a Sharpie on. You can take them off or get them off when wet, but I just put a new sticker over the old one if needed.
Many of the blends I've purchased don't have a "logo label" on the bag they come in or online. 2" fits the regular mason jar just about perfectly, but I use them on the wide mouth as well.