Question: Kousa dogwood trunk has peeling yellow spots and bark. I read that this can happen when temps drop. Should I be concerned about anything else possibly causing this?  Answer: Jonathan Foster, Home Horticulture Outreach Professional Kousa dogwood (Cornus kousa) tends to develop this peeling, patchwork pattern to the bark as it matures–in fact, many read more Why is the trunk on my Kousa Dogwood peeling and turning yellow?