Certified GKH Gardening Expert
Yes... Find some wettable sulful... That should take care of it. As added protection, I like to use a product from Foxfarm called Force of Nature Miticide... along with killing bugs of all sorts it is an all natural fungicide. It is ultra concentrated, and uses about 1/4 oz to a spray bottle full of water. Either option should take care of it for you. If you have any more questions, please don't hesitate to contact me either here, or on my email at firstname.lastname@example.org Thank You!