Saw Palmetto Cultivation

I am trying to help a friend cultivate Saw Palmetto in the tropics. Most harvested Saw Palmetto is harvested from the wild. In recent years, some progress has been made in cultivating it. Those who cultivate it don't want to share their expertise with others. Do you have any information on Saw Palmetto cultivation that you could share?

We do not have any direct crop experience with saw palmetto. However, there is some useful cultural information In the "Plants for a Future" database. Please visit:
www.ibiblio.org/pfaf/cgi-bin/arr_html?Serenoa+repens&CAN=COMIND