After a initial poor start my 6 fig trees that I potted this year are growing wonderfully. I keep them on my deck with 5 potted apple grafts. They get plenty of sun and ample water.
Today I noticed the prettiest fig out of the bunch (a Petite Negrone) had a bunch of gnats gathered around the pine bark mulch in the pot. All of the figs use the same 5:1:1 potting mix and are topped with the pine bark mulch. This particular fig had gnats while I didn’t notice them on any other figs.
What would cause this? As I said, the fig is small buy looks great and the planting and soil conditions were identical amounst all figs. Can the gnats actually cause any damage to the young trees or are they just an annoyance? Should I spray them and the mulch with triazicide?