The Maiar

[William Cloud Hicklin]

Originally Posted by Ardent

One of the Valar (at least) must have sung the herbs into being.

That would have been Yavanna, Valier of all that grows; and it was in fact she who both made the request that led to the Ents coming into being, and who included Radagast among the Istari.

On the other hand, Radagast seems to have been more concerned with animals rather than plants; Treebeard says that Gandalf was "the only Wizard who really cares about trees."