Here's an update: the plant in question has grown a lot! But I put the potato on top of the soil again, and there they were! It's as if the bugs were dormant for the winter, and now they're busy! I tried getting a better photo, but last year's photos are better. I can say that they are now in several of my plants but the plants have been doing very well. Maybe I should just stop putting potatoes on top of the soil and let it go.......
Then:
Now:
