My plants are confused- marks on my photos-help

My roses are in full flower- amazing, I only noticed the other day. It has been below freezing for 2 days so they will be zapped when they thaw out.


On a teccy note I am getting black marks on my photos, but not all of them, the lens looks clean. I thought I saw a very tiny scratch but now I cannot see it. I have cleaned the lens lots of times.
Any ideas anyone?