This guide shows you one or more of the best and most efficient routes to farm Terocone in World of Warcraft Classic and is exactly what you need if you want to gather materials yourself instead of spending your gold on it on the auction house. If Terocone is not what you are looking for, you may take a look at all available farming guides.
Farming Terocones in Terokkar Forest
Terocones are also available in Shadowmoon Valley, but the in Terokkar Forest is the best route to farm it. Here it is recommended to collect all other herbs on the way as well, otherwise the round will end too quickly.
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