This morning while scrolling through my Pinterest feed, I saw this pin, claiming banana peels are good for roses. I think I unconsciously doubt most similar Pinterest claims as they're akin to chain letters - easy to pass on yet no one actually investigates their accuracy.
Banana peels didn't seem that far off, though. They go in my compost bin every week and I'm sure they provide nutrients to soil. But would roses LOVE!!!! banana peels, as the pin claimed?
I found a lot of anecdotal forum and bulletin board posts, but wanted some more robust evidence. Then I found a newsletter from the American Rose Society, which is as good as it's going to get online. In it, the author states, "Banana peels are the true junk food of roses!!! They love the boost a banana provides from potassium and other elements contained within the banana and its peel." So while I'd still love to know why and what changes are evident in the roses, it's easy enough to add banana peels to the soil around the plants. It looks like an experiment for the spring.