When a northern catalpa tree blooms in early summer, it’s a lovely sight. Impressive clusters of big, white, trumpet-shaped ...

If a warmer Wisconsin climate causes some northern tree species to disappear in the future, it's easy to imagine that southern species will just expand their range northward as soon as the conditions ...

In two past columns I featured the bald cypress, which is a tree most often found in the deep southern United States. Its area extends northward into southern Indiana and Illinois. In Indiana it is ...

When it comes to tree cover loss, the spotlight usually rests on midlatitude hot spots like Brazil and Indonesia, where agriculture, logging and other development have threatened the existence of ...