Http://edis.ifas.ufl.edu/st609
I have completed the Master Gardener training and I'm currently performing volunteer hours in order to become certified. It is disturbing to see how much misinformation is being given without citing of sources.
For example, the link above from the UF source used by master gardeners throughout the state clearly gives the zones in which planting queen palms is safe for cold hardiness. Sumter County is in zone 9a and therefore not appropriate for planting Queen Palms. No recommendations against them are made except to prevent loss due to cold.
The University of Florida Institute of food and agricultural sciences, or ifas, is easily searchable for the same research disseminated by the extension office.
I encourage anyone who would like the horses mouth to speak regarding plant concerns to either directly contact the master gardeners or the extension office or to search for themselves online.