What is this ?Acacia Pennatula, Feather Acacia

Hello All,

I have this stuff on a good portion of my Acacia. Thought at first it was mold, but you can scrape it off and roll it up into little sticky balls.
Any help to eradicate this is appreciated.

Looks like there are Aphids or something similar in the white stuff. A spray with an insecticide should do the trick. You may have to put a small amount of washing up liquid in with the insecticide to get through the white stuff.

Aphids, whitefly or mealybug. The pictures are a little unclear (and my eyes are a bit blurry still from my visit to the eye doctor).

A soap spray should do the trick.