Q. I check all my plants weekly for possible problems. I noticed what appears to be some kind of white fuzzy things on my pear tree leaves and sent you some pictures. I didn’t want to mess with them in case they were from beneficial insects. I’ve searched on line but can’t seem to find anything. Have you ever seen them before?
A. Yes, I have seen these white fuzzy, cottony things on all sorts of plants including herbs, citrus and vegetables. These are not good guys but they are also not terribly bad either. You can wipe them off or spray with soap and water.
I have posted pictures of this before on my blog but I will repost it again. These are probably the egg masses of the sharpshooter insect or a close relative. Be sure they are not mealybugs. If you don't know what mealybugs are, ask and I will post some pictures. Truly one of the worst pests worldwide, particularly inside or in greenhouses but outside as well in wet climates.