Question From: Lutherville-Timonium, Maryland, United States
Q: Why do the small green leaves on my boxwood stay so curled after a cold winter. When will they open some?
The cupping is caused by an insect known as the Boxwood Psyllid. Horticultural Oil or Insecticidal soap sprayed on new growth should take care of them . For more information on treatment go to http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/insects/psyllids/boxwood-psyllid.aspx. Best And Happy Yardening, Nancy