This Northrend Alchemy leveling guide will show you the fastest way how to level your Northrend Alchemy skill up from 1 to 75 as inexpensively as possible.
Often the materials are based on a case that you will gain one skill point for each craft. This won't happen, so you will have to buy a few extra materials while you are leveling your Northrend Alchemy.
If you are still leveling your character, I recommend trying Zygor's 1-60 Leveling Guide to help you get to max level faster. And if you are low on gold, you can also try his Gold Making Guide.
Approximate Materials Required:
- 20x
Talandra's Rose - 20x
Tiger Lily - 60x
Goldclover - 24x
Adder's Tongue - 20x
Icethorn - 60x
Lichbloom - (5x
Dark Jade, 5x 
Huge Citrine, 5x 
Eternal Fire) OR (5x 
Bloodstone, 5x 
Chalcedony, 5x 
Eternal Air) - 15x
Frost Lotus - 105x Lichbloom and 45x
Crystallized Life, but don't buy these yet because you might make different flasks
Northrend Alchemy leveling
Go to Northrend and find Linzy Blackbolt at Dalaran (Northrend), then learn Northrend Alchemy. (The same NPC exists at Legion Dalaran, but she won't teach you Northrend recipes)
Goblin characters have +15 Alchemy skill because of their passive 
Better Living Through Chemistry. An extra 15 Alchemy skill means recipes stay orange for 15 more points. You can save a lot of gold by doing lower level recipes for 15 more points.
List of my Northrend herb farming guides if you have herbalism: 
Goldclover farming, 
Tiger Lily farming, 
Deadnettle farming, 
Talandra's Rose farming, 
Adder's Tongue farming, 
Icethorn farming, 
Lichbloom farming
1 - 5
5 x 
Icy Mana Potion - 10 Talandra's Rose
You can make 
Pygmy Oil up to 10 if you can find some cheap 
Pygmy Suckerfish.
5 - 10
5 x 
Potion of Nightmares - 5 Goldclover, 10 Talandra's Rose
10 - 20
10 x 
Elixir of Mighty Strength - 20 Tiger Lily
This recipe will be yellow for the last 5 points, you might need to make more than 10.
20 - 30
12 x 
Elixir of Mighty Agility - 24 Goldclover, 24 Adder's Tongue
You can also make 
Elixir of Mighty Thoughts or 
Indestructible Potion.
You should make your Alchemy Trinket, 
Mercurial Alchemist Stone, or Mighty Alchemist Stone if you don't have any Philosopher's Stone that can be used for Transmutes.
30 - 40
10 x Indestructible Potion - 20 Icethorn
40 - 55
30 x 
Runic Mana Potion - 60 Lichbloom, 30 Goldclover
This recipe turns green at 47, so you might need to make more than 30.
You can switch to 
Transmute: Titanium at around 47 if you can find cheap Saronite Bars at the Auction House.
55 - 60
Make 5 from one of these:
- 5 x
Transmute: Earthsiege Diamond - 5 x Dark Jade, 5 x Huge Citrine, 5 x Eternal Fire - 5 x
Transmute: Skyflare Diamond - 5 x Bloodstone, 5 x Chalcedony, 5 x Eternal Air
60 - 75
Make 15 from one of the Flask Recipes.
15 x 
Flask of Stoneblood - 105 x Lichbloom, 45 x Crystallized Life, 15 x Frost Lotus
You can keep making Transmute: Skyflare Diamond up to 65 if you can find cheap Bloodstone and Chalcedony.
I hope you liked this Northrend Alchemy leveling guide, congratulations on reaching 75!