There are these blotches on the underside of the fronds on my areca palm. They aren't on every frond yet so i would like to take care of it. I only made a post cause i want to know 100 percent sure of what it is and the best way to treat it. Im in the SW Florida area. Thank you for your help. If threads like this aren't allowed please just lock after an answer is provided please. I really want to get this taken care of. Thank you.

Yep we can, it looks like white louse scale. Couple of approaches to help your palm. You could trim of the really badly affected leaves and spray it with an insecticide. Or you could spray the plant with an insecticide of your Choice. It looks like the palm is under an awning, to help prevent the problem a regular hose down will deter them to some affect.

I use a soapy water solution and paper towels to manually wipe scale from infected palms . I don’t get much scale in my garden so the soapy solution keeps the scale at bay.

Mix up a bit of dish soap and warm water , wipe the scale off with a soapy paper towel ( the nice , thick , soft ones) and dispose of the paper towel . Then spray the plant with the same type of solution with a sprayer for a few days . The scale or other insects really don’t like soapy water but I’ve never had any of my plants object . Only use chemical sprays if the scale is not manageable or you lack the time to do it manually ……OR you have thousands of plants to attend to like @happypalms . Harry