English professor emeritus George Harper seems an unlikely source for a biology lesson.

However, the retired English professor has much to say about Calvin’s trees: He knows about how 40 years ago, elm trees covered the campus and about the disease—elm blight—that quickly took them out.

He’ll tell you about how a building project was modified in order to save the 200-plus-year-old oak, the oldest tree on campus.

And he’ll discuss his favorite tree on Calvin’s campus, the American sycamore: “They are very handsome trees … . They have the three- or four-colored bark, almost white to dark brown, long strips.”

Harper is considered an authority on Calvin’s trees courtesy of his long history with the 166 acres of campus—once farmland owned by wealthy businessman . Harper worked on Miller’s property, where he got to know the treescape pretty well.

“He, for a long time, has been a strong advocate for protecting trees on campus and passing along some of those stories,” biology professor said of Harper.

Harper has also passed the torch. Warners, a former student of Harper’s, represents the next generation of Calvin professors and staff who are looking after Calvin’s trees. So does Bob Speelman, a certified arborist and the college’s supervisor of landscape operations. The two are part of the Campus Tree Advisory Committee, which worked hard at taking the necessary steps to nominate the college for the Arbor Day Foundation’s Tree Campus USA.

This spring, Calvin became just the to earn that distinction. (The other two are the University of Michigan and Western Michigan University.)

“This is a great recognition with a national organization to show that we care and we have our act together in caring for campus trees,” said Speelman. “It certainly shows that not only I, but our students, faculty and administrators, respect tree care as well.”

Tree Campus USA is a national program created in 2008 to honor colleges and universities for effective campus forest management and for engaging staff and students in conservation goals.

To be recognized as a tree campus, the college had to meet Tree Campus USA’s five standards for sustainable campus forestry: maintaining a tree advisory committee, having a campus tree-care plan, dedicating annual expenditures toward trees, observing Arbor Day and holding student service-learning projects related to trees.

“A landscape that includes numerous trees contributes many environmental services to a community,” said Warners. “Besides decreasing energy needs, processing stormwater, and enhancing property values and biodiversity, there are some really interesting things coming out in the area of ecopsychology, one being that learning is promoted when there’s a healthy natural environment in which the learning takes place.”

Warners is one of many members of the Calvin community who has helped the college maintain a healthy natural environment on campus. In recent years, he has worked with geography, geology and environmental studies professor Jason Van Horn and their students in , a detailed inventory of all 3,500-plus campus trees.

“This is very consistent with our commitment to stewardship, that we will not only pay attention to the people we are living with, but also to the places where we live and the other creatures with whom we share these places,” said Warners.

The care that the Calvin community continues to give toward the campus trees is something that Harper thinks is important and has been done well. If he were to grade the college’s efforts, he said he’d give it an A- or a B+.

“Calvin is one of the few green places that has a biblical aspect to it—not to subdue the earth, but to manage it, do it right,” said Harper.

At the age of 89, Harper still makes his way to campus a couple of times a week, and once in a while he’ll stop into Warners’ office and talk trees.

“He’s sort of a Lorax figure on campus,” said Warners.

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