Some types of perennials, including hosta, do not have sturdy stems, and quickly turn to mush after a few hard freezes. Hosta, daylilies and iris are best cut back in fall to an inch or so above ...
Tom MacCubbin gives advice on gardening in Florida including care of impatiens, poinsettias, squash, crape myrtles, ginger plants, hydrangeas and plumeria.