Well I STRONGLY DISAGREE WITH M.G.! I have the same amount of experience as m.g. but unlike him have had amazing results with Sugar. The most un-processed the sugar the better, the best being Turbinado. I would recommend using around 1 tablespoon per gallon of water. But he is right about the insects. Well atleast about the ants anyway. But in some aspects ants are actually benefical, protecting from more harmful insects. Don't know how he says it 'gums up the roots', adding sugar supplements plants natural sugars making them grow bigger faster than without it. There was quite a nice article in HT's a few months back called 'Sweetleaf'.