A friend of mine has two potted Lebanese fig trees only a few feet from one another but this one tree has this problem on its leaves.  I'm assuming it's a bacterial infection of some sort.  Like me, he's near Sacramento where our climate is relatively arid. Any solid ideas?


 

Classic rust. Flip leaf over and should have started from back side. Its bad this year ! Use a copper funguside for. rust, black spot, and it cures a few other fungus problem too. I just bought some. It may be black spot fungus hope this helps.