I know these pictures are out of focus, I could not get the camera to focus on the subject. This is Caribbean Star and I noticed some ants crawling on the tender part of the plant. Sure enough, those Green blobs you see is the dreaded croton scale. 3 days of a low of 37 F and its January 16 and I find scale. Just a heads up to the crotonheads in South Florida, you may want to survey your plants soon.