Had a 7’ Dawn Redwood delivered from a nursery this week and noticed right away some very minor discoloration on the leaves. It looked a lot like scorch at first, so I wasn’t too concerned as that’s easy enough to deal with, but it has advanced a bit and now I’m worried it’s rust. Can anyone take a gander at the attached photo and let me know what you all think? If it is rust, any advice? I’ve already isolated it, and I know not to let water drip through the leaves, and to completely destroy any material I remove, but I’ve also seen some mixed reviews on fungicides. Any advice from the more experienced members would be appreciated!
Thanks in advance!