Garden Pests and Diseases: This just came out of nowhere!, 1 by KatG

KatG wrote:
Was walking by a couple of container Sago's this morning and thought...who was using white paint around here?

Well, on closer inspection, it's not white paint, it's some nasty infestation. (scale?) It's really worse on the new sets of fronds that have just come out.

In your experience, what's the best way to treat this. I can't move them somewhere else to treat as the containers weigh a ton, but they are kind of on their own and not mixed with too many other pots.

Any help would be greatly appreciated.

Kathy