Here's a protected items list for herbalists in Northrend.

[Wassabi]

Here's a protected items/forcemail list for all you herbalists in Northrend, so you can make some profit with your grinding/questing. It is all the herbs you could possibly find. Enjoy.

<ProtectedItems>
<Item>36901</Item><!--Goldclover-->
<Item>37921</Item><!--Deadnettle--> 
<Item>37704</Item><!--Crystallized Life--> 
<Item>39969</Item><!--Fire Seed--> 
<Item>39970</Item><!--Fire Leaf--> 
<Item>36904</Item><!--Tiger Lily--> 
<Item>36907</Item><!--Talandra's Nose--> 
<Item>36903</Item><!--Adder's Tongue--> 
<Item>36905</Item><!--Lichbloom--> 
<Item>36906</Item><!--Icethorn--> 
<Item>36908</Item><!--Frost Lotus--> 
</ProtectedItems>