Is Alum Root Edible? Separating Plant Fact from Mineral Fiction
                                
                                
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                                    4 min read                                
                            
                                While many garden perennials are used for culinary purposes, the common perennial plant known as alum root, or Heuchera, is not one of them, despite its name. The truth about whether alum root is edible is complex, with its common name often causing dangerous confusion with the mineral alum.