How do ents die

[Morsul the Dark]

but I thought Yavanna created the ents to protect the trees from dwarves waqs Yavana an elf? I dont think so...I think she was an ainur

At any rate their creation aside Alright they die like regular trees I suppose sounds correct but still fuberal customs anyone have any ideas

[dancing spawn of ungoliant]

Yavanna was worried about Aulë's dwarfs and had a conversation with Manwë who said that there will be tree herders walking in the forests. Before it Manwe said that Eru had spoken to him and he had said that when the Children of Ilúvatar awake, so awakes Yavanna's thought as well and it calls spirits from far and they go in the midst of kelvar and olvar.

So it would seem that the ents actually aren't ordinary "mortal trees" but spirits living inside some things among olvar, as also hinted in the letter which Tuor referred.

In LotR (I can't remember the exact ch.) Treebeard says that some trees are getting sleepy and more tree-ish. My personal opinion is that when an ent became treeish enough he/she became a regular tree and then lived a tree's life and died like trees do.

But then there's the question about the "bad" ents/trees (Old Man Willow...). What could have made the lofty spirits turn evil? But that doesn't probably belong in this thread.

[Morsul the Dark]

YYes I now remember that the ents were becoming tree-ish however that would mean that would a ent not become treeish he would live on indefinetely? and if ents were created by elves awakining trees why not make more through this method I believe the ents feared their doom because of no more entings but if they were immortal why worry Their race would never die

[Eomer of the Rohirrim]

The Elves did not invent the Ents, they merely 'awakened' them.

I think that it is plausible that whenever an Ent got bored with just standing about for thousands of years he became 'tree-ish' (who could blame him?) Trees have life and die, so the 'tree-ish' Ents would wither away likewise.

By the way, excellent point about the hearts Imladris.

[dancing spawn of ungoliant]

In the Sil it also says that the spirit-thinggie would last only the time when the elves are in their force and the second born are young.
It is said that the elves taught the ents to talk. What the elves didn't do is create the ents. They couldn't just conjure more talking and walking trees at will.

Maybe the race of the ents would never die completely but it couldn't increase either. Besides it's nice to have many relatives, there's certain power in the number and the ents might have known that
[edit: oops! Eomer, we crossposted but I'll let my reply stay anyway ]