Plumeria can be harmed by tiny insects called thrips. To detect thrip infestations, look for silvery patches and stippling on the leaves of your Plumeria. Using yellow sticky traps can help monitor thrip populations. For mild infestations, insecticidal soap or neem oil can be applied to control the thrips. You can also encourage natural predators such as ladybugs and predatory mites to help control the thrip population. To prevent damage and maintain the health of your plant, it’s important to regularly inspect your Plumeria and promptly address any thrip infestations.