Bring a Timberling Seed to Rellian Greenspyre in Darnassus.
[player], can you take one of the seeds you brought me to my friend, Rellian Greenspyre? He is a druid in Darnassus, and when last we spoke he revealed his interest in my work with the Timberlings. He had some ideas himself, and he will appreciate a specimen seed to work with.
Thank you, [player]. You have been a great help to me. I hope that, some day, you will see the fruit of my labors.
You will usually find Rellian walking the pathways of the Cenarion Enclave in Darnassus.