If you notice yellow spots on your Plumeria leaves, it may be due to different reasons. To address this issue, you can check for signs of pest infestations like spider mites or thrips, which can cause yellow spotting. It’s also important to make sure your plant is getting proper watering and avoid overfertilizing, as too much nitrogen can cause discoloration on the leaves. If necessary, you can use insecticidal soap or neem oil to control pests. Regularly inspect and maintain the plant’s health to identify and address any issues early, resulting in vibrant foliage.