What is causing my boxwoods to decline?
I have about 20 boxwoods in my front yard that are on a decline (some faster than others). They started out with yellow tips on the leaves, but now I'm seeing the plant die from the inside out. I've attached a few pictures for your reference. I've tried being really good about watering, but it does not seem to be slowing down the decline.
Hennepin County Minnesota boxwood decline
Many things can cause the symptoms you have mentioned and the photos lack the detail needed to evaluate the possibilities.
We recommend taking samples of the affected branches to Hennepin County master gardeners:
Plant samples and insects can be brought to one of their Farmers Market locations (just visit their Events page for Farmers Market locations) http://hennepinmastergardeners.org/events/farmers-market-schedule/ or you can send or bring samples to:
University of Minnesota Extension Master Gardener Program — Hennepin County
479 Prairie Center Drive
Eden Prairie, MN 55344
Office Hours: 8am-4:30pm, Monday through Friday
Phone: (612) 596-2110
Fax: (952) 828-7280
Driving directions from Google Maps
Phone: (612) 596-2130