Believe it or not, watering is the hardest thing for gardeners to do. I know that most gardeners, at one time or another, have had a preconceived idea that all you have to do is throw a little water in the plant’s general direction and your done. This misconception can ruin the harvest or keep the blue ribbon from being awarded. Take the watering tips and general rules in this section seriously. Professional greenhouse growers use these rules and tips religiously.