What are these white spots on my fig tree's leaves?
I've got a year-old fig tree (ficus carica) that seems quite healthy, but today I noticed that white spots are appearing on its leaves (see photo at this link: http://www.lcscanada.com/jaf/fig_spots.jpg ). What are these spots? Should I be worried? Is there something I should do to help this tree?
Here is a link that might be useful: