Dogwood and held leaves
Not much we can know about your dogwood right now Kirk. Unusual that your tree is holding last seasons leaves. More unusual is you are not seeing buds. Buds
are usually developed in the last growing season, to fill with life giving liquids in the new growing season. One possibility is expiration before the normal leaf drop
period leading to dormancy. If the tree died before this period, it couldn't respond to the mechanism triggering leaf drop. Just one possibility, but some trees do hold their leaves through winter. Regardless however, there isn't anything that can be done for the tree now, except wait. Wait to see what happens at normal leaf out time, which won't be long now. Meanwhile, you can read more about tree physiology at these links:
For the future, tree issues of any kind are best handled by the use of a certified Arborist, one who specializes in everything woody. You can find one or more Certified Arborists in your zip code at www.treesaregood.com Click on Find an Arborist. Arborist evaluations are not expensive but are a great
way to learn about tree health.
Thanks so much for the reply! I appreciate your time and expertise.