John, the orange group of flowers is impatiens. These are very easy to grow. My trick is the soil. Our soil here on the ranch is so rich in nutrients the plants grow like crazy and bloom profusely. It takes some work to have really good soil and time. I hardly ever have to water, the plants get there food naturally, less diseases and if I work the bed correctly hardly any weeds. Now some of my pictures in previous posts are surrounded by grass/ weeds this is due to negligence on my part. I am so busy here that I have to switch job details and some things go unmaintained for a while
Here are a few more shots of the impatiens around our place:
As far as edible impatiens, I have read that young shoots can be cooked and eaten, but this is for a selected variety. There is a high content of calcium oxalate, like in some grasses (pangola), and should be thoroughly researched before consuming.