The Elm Log is a Crafting Material in Final Fantasy XIV: A Realm Reborn
Zone
Central Shroud
Node
15
Level
12
Landmark
Bentbranch Meadows
Uses
Med-low level ACN weapon, plus Elm Lumber, in turn used in a tremendous variety of lowish level tools, weapons, etc. made by BSM, CRP and more.
Useful?
Yes, Elm Lumber conversion. Even early (NQ) farming works, and you'll use a lot.