Last year, my potted basil died a long slow death due to "mystery fly things." Since then, I learned that those flies were most likely fungus gnats. I tried all kinds of organic repellents like cayenne and soapy water, but these flies seemed impervious to everything and kept coming back. I finally gave up on the sickly basil.
This year, my basil has been doing much better with healthy, bushy leaves.
Last week, I harvested about 4 oz of basil and made tasty pesto that promptly got turned into neat little frozen cubes for future consumption.
I thought everything was going really well, and looked forward to the basil plants growing back bushier. But today, I discovered some leaves that were turning "holey" like swiss cheese. I didn't see any bugs around my basil plants, so I'm at a loss as to what is doing this to my basil. Is it some kind of bugs? Or could birds be doing this damage?