More then likely you have developed some kind of fungus. I would suggest that you would Flush the soil on your next water or as soon as possible. And get some kind of Disease control spray.
Hope your problem is Cure. Pics will Help...
CaliCaregiver Reviewed by CaliCaregiver on . Black little tar looking spots on top of leaves okay, i have these little tar looking spots on top of my leaves and on the underside is it bug poop or what ?? whatever it is its stuck on like tar and its hard to scrape off. they are really small but i want to make sure it is not killing my plant. its planted outside its some kind of indica strain about two weeks into flowering. what do you think ?????? sorry no pics at this time Rating: 5