I don't think this applies to your situation, but it's worth noting for fig growers in some parts of the country. I've had young, in-ground figs look similar and eventually die, and when I checked the roots, found that beetle grubs had eaten virtually all of them. I had a Smith die last year, and when I dug it up, all that was left underground was the main stem--and nine big, white, C-shaped grubs. They had even eaten the bark off of the underground stem, as well as chewed little trails into the wood. They seem to prefer some varieties over others--grubs killed an LSU Scott's Black but didn't touch a UCR 135-15s growing right next to it.