Oleander Help

Asked October 6, 2019, 7:24 PM EDT

Hi, We noticed that our oleander was not doing well during the winter. We moved it outside for the summer and noticed some spots on the leaves of 2 different varieties and colors. Please advise on what we can do to clean it up before it comes inside for the winter. Thanks, Joe

Howard County Maryland houseplants pest insects and mites

1 Response

Hi - It looks like your oleander has two types of scale insects. These insects suck out the plant sap, which can lead to a gradual decline in plant health. https://extension.umd.edu/hgic/topics/scale-insects-houseplants

Before you bring the plant inside for the winter, try brushing off the brown scales very gently using a soft toothbrush. Then treat the plant with an application of horticultural soil, which you can find in a garden center or hardware store. Apply a "summer rate" or horticultural oil, according to the product label instructions.