my areca has developed these white spots on its leaves and stems. I had wiped out most of the ones on the leaves a week back, with neem oil solution. I spotted these on the stems today. Are these scales? Would wiping these out with neem oil help with keeping them away? Should I do the wiping regularly, weekly maybe?
Also, one frond has turned yellow (towards the bottom and old) and some others are gaining yellowish shade, although I doubt it could be for an unrelated reason.
When I got the plant (almost 2 months back), the stems had the whitish powdery look(more or less the same as seen in the pictures, I didn't spot any clear spots though), but, on a little browsing it seemed to be normal, so, I ignored it.
My soil mix consists of 75% cocopeat, 25% soil. I had fertilized when first potting it and again two week ago. I keep it near a south-facing window (dim light), and shift it to east-facing balcony every now and then (for 2-4 days period). I've probably over-watered it a couple times, as the soil never really feels much dry.
I'm attaching a handful of pictures below.