Hello there, As you can see here:- https://www.openstreetmap.org/changeset/154871584#map=18/52.32865/-3.87478&layers=N  the tag landcover=? isn't rendered, so no one looking at the OSM map will see it. But the tags natural=wood, natural=forest, natural=tree_row are rendered. The landcover tag was proposed for use (and to be open has been used often), but it was as far as I know never approved or accepted by vote.

Way: 1305836366 you've tagged as landcover=trees, natural=wood. The landcover tag is unnecessary as the natural=wood tag renders the area on it's own.

Way: 1305836370 looks more like a hedge with 3 trees, unrendered because of the tags. A better, rendered, tagging would comprise of a linear hedge (barrier=hedge) and 3 nodes tagged natural=tree.

Regards Bernard