We must make sure that Vordrassil is never regrown. The furbolg must have harvested its seed.
Go to Grizzlemaw, in central Grizzly Hills, and obtain all the seeds that you can find. I will make sure they're properly destroyed.
Have you obtained Vordrassil's seeds yet, <name>?
Thank you, <name>. I'll take those from you.
The corruptive power of these seeds is dangerous. I must destroy them right away.
Kill either a Redfang or a Frostpaw furbolg to make yourself neutral to the opposite faction, which makes it easier to pick up the seeds.