There was no description as to single or double fans. I had assumed they were single anyway so that isn't the problem. The person they were bought from would appear to me to be a well known seller as their name has been mentioned here a number of times and always with high regard. As to northern or southern grower, to me it's quite a way south but I would think that they would be considered a northern grower (Indiana). I expected plants more in keeping with most of the nice healthy GREEN plants that people tend to post pictures of not these yellow dried up plants that I got especially for the price I paid for them ( not cheap). I know they will eventually do well but it's been my experience that plants like this tend to take up to 3 years to recover and bloom in my zone.