I would say aphids or some odd type of powdery mildew. Either way 20% diluted neem oil takes care of both of those. You can buy it on amazon just be sure to get pure agricultural grade oil or else you run the risk of killing your plants with ludicrous amounts of pesticides (artifical). And make sure to not get premade sprays or dilutions as that is what normally contains the pesticides im talking about. Heres a link to some which i have used and it worked great! :
Happy Growing! P.s yes neem oil is organic and edible so it wont hurt you or anything else if they eat it....only insects and fungus it affects.