I live near the Atlantic ocean in Central Florida. My home and garden is 2 years old and receives plenty of water. A couple of my hedge shrubs (ficus maybe?) have developed a strange symptom that affect most of the plant. The leaves are curling in so thight that they look like litle green chili peppers. I can see no infestation or sign of scale. The leaves are still very green and there is no brittleness or yellowing. The ones affected most get afternoon sun but there are others that get more and some that get less. Any clue as to this problem.
Have you unfurled the leaves that have curled up to see if anything is inside? In the UK we have insects that lay eggs and curl the leaves up around them and then leave the egg to hatch. The grub then eats it's way out later.