Scale on Mountain Laurel
Scale infestation on mountain laurel adjacent to corner of brick house. Area is partial shade, laurel is about 40 years old. During the spring, I sprayed dormant oil spray, on main and other branches. Please advise on treatment..
Have you tried flipping or scraping some of these covers to see if they are moist or gooey underneath (live)?
You could use a stiff brush to remove some of the live ones if found and reapply dormant rate of oil.
Any time now would be appropriate to use a dormant oil again (follow label instructions). Be sure to get complete coverage of wood.