14 June 2017
I was a bit taken aback to find the columbine- stems and seed pods alike- was very sticky and covered in aphids. I thought the apids were the cause of the stickiness, but it's actually the opposite! A bit of quick reading clued me in: some columbine is naturally sticky, which traps plant-eating bugs, which attracts predatory bugs that eat the trapped ones. Columbine also exudes a chemical or odor that lures in the plant-eating bugs. How cool is that. I could set aphid traps just using bits of columbine stem, or better yet, plant more of them near the garden next year.