With so many potential brands on the market of potting soil mixes and name changes over the years we couldnt say if this is the same mixture as your mom used before. The Dr Earth brand of potting soils are great and if you want to know more info on the compositions of them you can give them a call at 707-448-4676. The closest thing we could find online to Brown Earth in Georgia tha you mentioned looks like it comes from Craven Pottery which may be the original company your mom got the product from.