Hey guys. Don't worry about it. I am not completely convinced what I said is totally right. If he is using chemical ferts (which Shultz usually is) just make sure you don't give too much. For a full strength watering give half of what the directions on the back say. Are you using the vegetable booster, or orchid/rhododendron booster or what? Some of their stuff is for acid loving plants which pot is not. Otherwise let us know how they look after that feeding.