I have bought these in a gallon pot as a landscape annual for the last few years and they come back very well--a nice pop of color in a ...Read Moreyellow flower dominant time. I have tried the red-lobelia cardinalis in a smaller pot in my zone 4 garden and they don't seem to come back, so I'd say for zone 4 try to find the bigger plants. Plus they seem to like part shade less than they do part sun.
I have bought these in a gallon pot as a landscape annual for the last few years and they come back very well--a nice pop of color in a ...Read More