Meanings of immemorial trees in English

The house is half-timbered; from the height above it looks old and peaceful amid its immemorial trees.

His fear was the dread lest the immemorial trees he was guarding should be wasted and the forest destroyed.

It was a noble old park, richly timbered with oaks as old as those immemorial trees that make the glory of Stoneleigh.

Beyond these things, and far away to the front, you may detect on clear days a white church-tower nestling like Swiss milk amongst immemorial trees.