Is this powdery mildew or some other nasty bug?

[GrowingRose]

Please help!

 

[Beachwalker]

Your last picture looks like it, so I'd be inclined to think the first two were too; heres some wpm I've dealt with recently for comparison

Edit: recommend stop spraying liquids on plants

 

[GrowingRose]

Thank you! Better that than leaf hopper! I don’t normally spray liquids on leaves, but I was trying to see if it would come off or move away! It didn’t!