'Tis e'en so!
1. Bold grey takes direction for her.
RINGLO: Sauron’s speciality loses humanity for a flower.
MORANNON: Lament mingles with horse colour. Loses note but adds direction, for a sombre portal.
FELAGUND: Leaf mingles with crude form of fertiliser, but the result is high and Noldorin.
CELEBDIL: Old English chill mingles with bitter liquid, but loses note at the peak.
ERKENBRAND: Hesitate, know, mark him.
7. Here interweave many tales, if French direction meets the Aylesbury rockers.
8. Quaint tile around the mountain.
P.S. Don't overthink the remaining clues. The answer may be there, not synonymised.
P.P.S. Duh ... Dung backwards is not Gund but Gnud, I've just realised. The clue was better before I changed it. 'Almost backward' would work, I suppose.
P.P.P.S. Galadriel, that's quite an image! The Lady of the Wood takes a more 'hands-on' approach to the preservation of Lorien's beauty.