One could check/confirm by looking for a geniculum on the petiole of those larger leaves. Homalomena would have that, Philo does not. Philo scandens can make larger leaves like these.

that sort of happened to me. i bought a pallet of celebration grass and noticed it was much thicker. At first i thought it was because it was maintained tall but once i sprouted some seeds i knew for sure it was a common. I didnt do anything about it because it only covers a section of my yard, but i am very satisfied on how well it tolerated the shade (area recieves (4.5- 5.5 full sun). i mow at 1 inch with reel and is denser than my 419, but that must be because i only get 6-7 hours of full sun now on the 419. that being said, unless you want the fairway look, it seems much of a hassle to get it replaced, if anything, they should give you a discount. i dont mind how my common looks, looks nice actually, and mine looks thicker than yours (the stems). Good luck. i am standing on common bermuda, to the left of my foot is 419.

Thank you very much for the ID's. The first one is near the spot where I saw the bad-looking P. mugo subsp. rotunda about which I asked an ID too. At first I though they were both the same species because they looked similar, but when I went too look closer then I could see the cones were definitely different. Funny part is that someone else suggested in that thread where I asked for an ID that it could be P. thunbergii. So I guess both trees are similar looking indeed. The second one I think comes from a hedge close-by that was (I think) never trimmed and therefore started producing cones. The third one is almost a miracle to me. Closest Abies koreana that I'm aware of is at least a few hundred meters away from where I found it. I'm very glad I dug it out too because A. koreana was also on my wanted list. :)

I don't know enough about European sphinx moths to be helpful - try posting this on the Butterfly forum, and mention where you live - someone there may be able to help. Tucker