At the current moment, there is no renewable way to get Herb Bags. Adding them to the Wooden or Iron Crate loot pool would be a great addition! : r/Terraria
Moore Wilson's Calico Herb Bag - Moore Wilson's
Strawberry Pot - Gardener's Best® Strawberry and Herb Fabric Grow Bag
Disposable Drawstring Filter Bags for Spices, Herbs, Tea, Coffee, and – Curated Kitchenware
CUSTOM PRINTED HERB BAGS - Pouch.me
Bee's Wrap Reusable Herb Bags, Set of 3, Cotton & Beeswax on Food52
Reusable Herb Bag – The Sustainability Project
Herb Tote Bag - Olive Rose Designs
4,541 Herb Pouch Images, Stock Photos & Vectors | Shutterstock
Herb Gatherers Bag by Marcusstratus on DeviantArt
50pcs Cotton Plain Drawstring Bags for Herb Tea Wedding Party Favor | eBay