Cafier Coco Fiber Plant Pots Square Coconut Fiber Pots For Planting 4 Inch 24 Pack 3 Gallon Fabric Pot (Made from Hemp) Georgia Seed & Garden The Healthy Bones Plant Based Nutrition Plan and Cookbook : How to Prepare and Combine Plant Foods to Maintain Optimal Bone Density and Prevent It's callus tissue! , Plants are really cool. Their cells have a property called totipotency which means they have the ability to be whatever the plant needs. Callus is essentially a build up of cells