Welcome to RIU. As to your problem, Neem and or Insecticidal soap. You may also want to use a product like Advanced Nutrients "Barricade" to help prevent future infestations. Good Luck
Well today I got my Army of Darkness... Took like 2 hours of driving around to different nurseries.... and there was only one bag left at the place I got them...
They WENT NUTZ! on my plants when I took them outta the bag.
Anyhoo, I'll just be cutting off the leaves that have the mold on them... just to be sure.
There is a product here in Texas called Garrett Juice...all organic...the guy has a radio show each week called "The Dirt Doctor". I don't know if it's obtainable in your area but it is a dandy...compost tea, molasses, apple cider vinegar, and liquid seaweed. The spider mites will wish they never saw your babies.