The coming of autumn often makes trees harder to identify — but sometimes, it does the opposite. The black locust (Robinia pseudoacacia) is a case in point. In summer, its bluish-green, oval-shaped, ...

A couple of years ago, I used this column to sing the praises of 10 especially tough and beautiful trees for the Midwest. My list included white pine, Kentucky coffee tree, Norway spruce, crabapple, ...

The city of Pleasanton is in the process of removing nearly two dozen Purple Robe Locust trees in and around downtown due to ...

A botanical mystery has been stirring through local social media the last couple of weeks as posters ponder about that big tree with the purple flowers. Colonies of trees with large spikes of lavender ...