Speed Up Icethorn Farming
The first step is to learn Northrend Herbalism, you can learn it from Edward Egan at the old Dalaran. (43.16, 33.72)
Icethorn herbalism farming can be farmed in different places and I have found 2 places to farm them.
To speed up the farming you can use:
Darkmoon Firewater: Allows faster gathering of resources and slightly increases your size for 1 hour (5 min. cooldown)
Icethorn Route 1 – Icecrown
There is a bigger route than this, but I have made the route shorter, and there are many flowers to herb. Follow the route around and you will find Lichbloom and Icethorn flowers.
Icethorm Route 2 – The Storm Peaks
The alternative route to farm Icethorn. There are also Lichbloom flowers in this area.