David Owens, Extension Entomologist, owensd@udel.edu
San Jose scale crawlers should be active now. If you experienced injury on fruit last year (red spots where crawlers settled to feed), control measures should be taken, and especially if a dormant oil application was not made during the winter months. Good options include Centaur (buprofezin) and Seize or Esteem (pyriproxyfen).
White peach scale should already have emerged. If no peach scale treatments were made but trees have significant numbers of scale, another generation should be present around mid-July. North Carolina reports crawler peaks of early May, mid-July, and early September.