Ask the Expert: Avocado leaves with brown AND white spots...HELP! I have brown spots on the leaves are slightly raised and recently i started getting white 'sugar' like spots on the leaves, too. What do i do?....Your HELLLP, please.... Thanks, Ken Plant Expert Reply: Can you remove the brown spots by scrapping them with your fingernail? If so, you have an insect called scale attacking your plant. As for the white spots, they could be caused by an insect like a spidermite or another type of mite. The white spots could be fungal as well. To find out what is causing the white spots, we must first eliminate insects as the source of the problem. Use a magnifying glass to see if the leaf has a type of mite. If you see anything moving on the leaf, you will need a miticide - which can be purchased at your local garden center. It might be helpful to have a picture of the back of the leaf and the stem of the plant. Fugual problems will often present themselves on the [...]