Most of the growers I have surveyed have fared pretty well during these last couple weeks of freezes. I thought that I would put a few links of information related to cold protection from UF/IFAS researchers that growers could brush up on. Most growers are already dong a great job of protecting their crops but I thought that I might add a publication on freeze cloth as an alternative to pumping large quantities of water.
Here are the links:
This one is titled Row Covers for Commercial Vegetable Culture in Florida http://edis.ifas.ufl.edu/cv201
The information is fairly applicable for ornamental growers.
This one is about ornamental freeze protecting: http://edis.ifas.ufl.edu/pdffiles/MG/MG02500.pdf
Remember to make sure the ice that is forming is clear and forms icicles. If the ice is milky water may not be applied in adequate amounts.
Also remember to turn water off after the wet bulb temperature rises above freezing if it is windy or dry to avoid evaporative cooling.