Q: We recently moved into a house with a hawthorn tree in the front yard. The tree had beautiful red blooms in spring, but now it has developed unsightly black spots on the leaves. Is there a way to ...

Lance is a caretaker of a nature preserve in North Carolina and an expert on hawthorn trees. (The species Crataegus lancei is named after him.) And for years now, he’s been chronicling their ...

Parsley hawthorn trees grow to about 15 to 20 feet tall. Clusters of white flowers appear in March or April and are soon followed by the foliage, which looks like flat Italian parsley, hence the ...