To be honest i cant give a straight answer. I have never had any look like that. I am not a big fan of folar feeding. What did rusty say? He is the man to ask. When was the last time you feed through soil? Also I would start by checking the ph. Get a ph pen at your lawn and garden center.Your soil been around 3-4 month. That is the life span for that soil. Nute should be used up and ph could be starting to waver on you. If you can when you pot is dry .Water with proper water till constistanly moist. Try to catch the run of water and get the ph of that. If that is good then i would give it them some nute. Thats if you havent over feed them. Maybe somone else could jump in and help..:thumbsup: