Hi Linda, this useful article will give you all the information you need to fertilize your latanas https://www.gardeningknowhow.com/ornamental/flowers/lantana/fertilizing-lantana-plants.htm
You can protect the roots by applying a 3-4 inch layer of organic mulch (compost, pine needles, chopped leaves, bark chips). That should help
These videos will give you the help you need! Good luck.
Betty, We live in NC and we will have a handful of days below 32 degrees. How can we protect them for that short period of time? Thanks for the other info....super!
Are you using miracle grow? Then you can start at your very first watering. Good Luck!
Thanks Lisa, didn't know if that was too much stress at one time. Here n NC we may hit a handful of winter days f below 32 degrees. Any suggestions on how to protect them so they don't freeze? Thanks so much.I LOVE Miracle grow.