Like I've mentioned in the past, there are two ways to approach gardening. You can study up, follow the rules and have great results. Or, you can walk around the plant section of HomeDepot, say, "oooh, that looks pretty - let's buy that!", go home and stick it in the ground.
We are once again taking the trial and error approach. And to be honest, it worked out well enough last year, that I'm happy staying ignorant for now.
Looks like our timing was pretty good, as the rain today is serving as a free watering service. How nice.