Spotted a weird trick with coffee grounds at the Portland Japanese Garden
Honestly, I was just walking through the Portland Japanese Garden last weekend, checking out their moss garden like I always do. Tbh, I saw one of their gardeners sprinkling used coffee grounds around the base of a big, old Japanese maple. I asked him about it, and he said they've been doing it for about 3 years now. He told me it's not really for the acid, but the grounds help keep slugs away from the tender new leaves in the spring. Ngl, I was kinda surprised because I always heard coffee grounds were just for acid-loving plants. He said they just get them from the garden cafe and let them dry out first so they don't mold. Has anyone else tried using coffee grounds for pest control on their ornamentals, or is this just a weird Portland thing?