Hi there, I am new to the board but have an issue with my white birch. I noticed in the early summer last year that pretty much every single leaf had ragged edges (not the natural serration). No sign of browning or other damage like holes or whatever. Just green leaves with very ragged edges. Every single leaf! Any idea what it is? I had an arborist come over and he said to inject with neem oil in case its leaf miner but to be honest it seems weird that it is and I am wondering about something more systemic like frost damage. Sadly i didnt take photos. What do you think? And also an injection of neem oil kinda worries me…. Thanks!

Winning

Hello all! this birch came with the house. My Tree Guy (not an arborist) says the one on the right is dying and should just be cut down before the Santa Ana winds bring it down. Two questions: What kind of birch is it? And should I just cut it down?