>>773387>the trees aren't nativeTrue for pine and other coniferous forests planted in the 19th century, but here we've been moving away from that in the last couple decades, going more native-focussed again
>lack of biodiversityThis is true though. There's an abandoned (since the 1940s) orchard near me (pic related), and if we exclude "microphytes" like mosses and shit, in the middle of it you can pretty much only find exactly 2 species: Acer platanoides (trees) and Hedera helix (groundcover), anything else doesn't stand a chance in the very dark undergrowth