The title tree in “The Witch Elm,” Irish writer Tana French’s best and most intricately nuanced novel yet, is a mysterious character in its own right. Stately, 200 years old and burned into the ...

Deep in Glen Affric stands an ancient witch elm once known as the “Last Ent,” a lone survivor of Dutch elm disease that wiped out tens of millions of mature elm trees across the UK. Transmitted by ...