Thanks for the photos,
@Dan Freeman . I know you’re having a hard time with drought, and I don’t want to minimize it, but your garden is looking great. I’ve been there with you in terms of having to decide what to sacrifice, and it was my annuals last year. I hope you get some rain soon to keep you going longer.
I had a mixed day in the garden today, mostly related to my bean plants. I harvested almost three pounds of my green bush beans and another two pounds of the red noodle beans. The bad part, though, was that the red noodle beans were just crawling with large bugs.
At first I thought they were “kissing bugs” because I had received a report from a neighbor that one had been spotted in another neighbor’s house. She had shown me a picture, and they did look very like these. Kissing bugs are bloodsucking insects, and they can carry and transmit a parasite that can infect both humans and dogs. It’s much more a concern in South America where the bugs colonize houses, but our county in Texas is known to have infections, so I was concerned.
The question that occurred to me this morning was “Why would kissing bugs be congregating on my bean plants?” It just didn’t make complete sense to me, and most of the information I could find about them had to do with Chagas disease and not gardens. I decided to get a closer look through pictures and do some more searching, and I came up with a closer match to the insect: the Conchuela stink bug. Not that I was excited to have a stink bug infestation in my garden, but I felt very relieved by it nonetheless.
(broken link removed to https://extensionentomology.tamu.edu/insects/conchuela-stink-bug/)
After reading in several places, it seems that Conchuela stink bugs are fond of legumes, particularly mesquite pods. I might need to mosey on down the street and examine the mesquite tree that grows there. I don’t even know when it sets seed, but if it has done so already, and the seeds are hardening, maybe the bugs moved on to find more tender fare.
Because the infestation was so bad, I did break out my diatomaceous earth and puffed it one the insects and the vines. I’m wanting to save seeds from some of my beans, and the stink bug damage can actually inhibit future seed germination since they penetrate not only the pod but also the tender beans inside.
I don’t like using DE broadly since it is an indiscriminate killer of insects, both pests and beneficials alike. Thankfully while I have seen bees and ladybugs in the garden, they have not been on the red noodle beans. I puffed the DE on in the late morning. In the late afternoon we got a rain shower that washed most of it off, for which I was thankful. I’m hoping that it was enough to knock the population back a bit. I’ll see what things look like tomorrow morning. I’m not expecting a complete riddance, of course, but it would be nice to see fewer. There were so many today, it was quite horrifying.
If you want a challenge, zoom in on the photo above of the long pods and see how many you can count in just that little area.