"For those of you ordering tea from Mountain Rose Herbs, you may or may not have noticed that they've begun shipping their 4oz teas in cellulose packaging. I got one 4oz tea from them that was in their older style paper bags just a couple weeks ago, but the next one I got was in the cellulose. I just talked to Blake from MRH on the phone, and she said that the packaging was supposed to be from trees/wood, but that there was no guarantee that corn cellulose did not make its way in. She said the spices would always come in the BPA-free plastic, not cellulose, and the larger-than-4oz size teas, as well."
I believe their products are the same as usual, and this is only a packaging change.