I Found the Entwives!

[Ardent]

Originally Posted by Legate of Amon Lanc

... expect, that Goldberry should have been a bit more, hum, treeish if she had been one...

It was the Ents who loved the great trees, the Entwives loved lesser trees and watermeadows and herbs etc. If shepherd becomes like sheep then I'd expect Entwives to become more like the plants they love, in Goldberry's case waterlillies or Irises perhaps. But then if, as treebeard says, "the elves started it [talking to the trees to waken them]" then why should Ent not become more Elvish?

Originally Posted by Legate of Amon Lanc

... Also, there's her name "River-daughter". She seems to be heavily associated with just that, she sings the rain-songs and songs about streams and so on, so why is she "River-daughter" if she is an Ent(wife)?

Because:
"When shower and Sun upon the Earth with fragrance fill the air,
I'll linger here..."

It's a pity we don't know much about Radagast because herblore was part of his expertise, and he was the Maiar sent to Middle Earth by the female Valar who sang the Ents and herbs into being. Perhaps he dwelled in Rhosgobel, in the eaves of Mirkwood, because that was where the rest of the Entwives were? Certainly the fields of the Beornings were as garden-like as the Barrow Downs. Bilbo and Thorin's company, coming into that land:

"...noticed that great patches of flowers had begun to spring up, all the same kinds growing together as if they had been planted." TH, Queer Lodgings.