What is killing my impatiens?

Question

I bought $100 worth of impatiens and planted them where they only receive morning sun. I've been watering to establish roots but only every few days. Four days later, some of their stems are withering and breaking off. I found some garden snails in them and blaced bowls of beer around to kill. They did not go to the beer. I put Slug-go on the ground. No more snails, but they are still withering and breaking at the stems. They just disappear!!! I have three pots full of them and am not having any problems with those guys. What is the problem?? What can I do to save the existing ones?

Answer 1

Probably a type of fungus(hard to distinguish without a photo). Try spraying them with a fungicide and see what happens