Thousands of trees, hundreds of volunteers, five years and one giant leap for the Purdue Arboretum

The clayey Indiana soil, still saturated from the last spring shower, squishes under shovels. The sun beats down on the hottest day of the year thus far as knees dig into mud. Hands knead through clumps of dirt and earthworms to soften it for the foundation of newly-planted native trees.

This year, the Purdue Arboretum made groundbreaking history. In the fall of 2019, together with  Purdue for Life Foundation, Purdue Grounds Department and the Campus Planning, Architecture and Sustainability Facilities, they made their own mission plan in the spirit of Purdue’s 150 years of giant leaps. The 1869 Tree Planting Master Plan called for 1,869 trees to be planted on campus and Purdue-owned lands, a number inspired by Purdue’s founding year. Former Purdue President Mitch Daniels told the group to double the number.

To celebrate Arbor Day in late April, 150 volunteers joined in planting 260 trees, pushing the plan’s total to 3,416 trees and leaving over 300 left to plant before the 2024 deadline.

Another round of volunteers, this time horticulture and landscape architecture majors, planted trees on May 2 in Horticulture Park. Arboretum director Paul Siciliano and the Grounds Department delivered trees and were excited to put the tools and decision-making power in students’ hands.

Peter Vaughn dusts off his hands after carrying in young native trees , opens larger image Peter Vaughn, lead senior arborist for the Purdue Grounds Department, finishes dropping off a load of trees for the students.

“We’re landscape architects. Typical architects work with building materials like bricks and mortar, but plants are our materials,” Siciliano said. “Experiences like this and working with the arboretum gives horticulture and landscape architecture students a chance to learn more about trees and apply their knowledge from class.”

Student workers for the Purdue Arboretum have actually been picking out what trees to plant and where to place them. Their focus has been on native plant species.

Kayla Edgerly sits on the ground, using a shovel to stabilize her as she presses a boot into the soil at the base of a newly plant tree , opens larger image Kayla Edgerly uses her boot to compact the soil around the base of a prairie crabapple to prevent air pockets forming and causing the soil to sink in after rain.

“Working for the arboretum provides good experience for industry, and it’s nice to get outside and be paid for it,” horticulture student and arboretum supervisor Kayla Edgerly said. 

Other students with little to no experience planting trees came because of their environmental activism, to do something fun after finals and just to hang out with friends. Horticulture student Isaac Damer brought his pals Patrick Shea from computer science and Jack Barden from political science and “dragged them along for the ride.”

Three students stand in a row, all with shovels in hand. The first two are watching the third finish planting a tree , opens larger image Patrick Shea (left) and Isaac Damer (middle) watch their friend Jack Barden (right) finish planting a serviceberry, of which the berries can be picked, eaten and baked into pies.

Since landscape architecture majors travel to complete a year-long cooperative experience after their junior year, tree-planting during finals week also served as a last hurrah for some. Roommates Josh Bailey and Odin Johnson swapped hypotheses about who would have a hotter summer in their co-op: Bailey in Orlando or Johnson in Dallas.

Josh leans against his shovel and watches as Odin steps around their newly-planted tree , opens larger image Roommates and landscape architecture students Josh Bailey (left) and Odin Johnson (right) plant a flowering dogwood together.

As the day came to a close, friends and peers wiped mud away from their hands and tossed their shovels back in the trailer behind the Grounds Department’s truck. Arboretum director Siciliano thanked the group for their hard work. From witch hazels to crabapples to service berries and more, the groves they planted across Purdue would positively impact the environment, wildlife and the community for generations to come.

The contribution of our students is a major factor in the success of the arboretum. This student-led planting of the 1869 Tree Plan at Horticulture Park is an example of their hard work and passion for creating a beautiful and sustainable landscape on campus. They’ve left a living mark on Purdue.”

- Paul Siciliano, Purdue Arboretum Director

Peter and Paul stand on opposite sides of the spruce tree they planted together, still with shovels in hand , opens larger image Peter Vaughn (left) and Paul Siciliano (right) planted the final tree of the day, a spruce, together.
Madeline Budan pushes down on an auger to drill a hole in the soil Madeline Budan uses an auger to drill a hole in the soil for the larger spruce trees, which required a deeper planting hole than most of the others.
Stephen Mills lifts a shovel over a mound of solidified soil Stephen Mills, who worked in landscaping before coming to Purdue, knew to bring gloves to the event and how to use his shovel to break up the soil.
Grace Wagner wears black sunglasses and an Arboretum t-shirt as she carries trees along the trail With a dusting of dirt on her black jeans, Grace Wagner looks for new spots to place trees along the trail.
Madeline Budan, Kayla Edgerly and Grace Wagner all sit behind a witch hazel tree From left: Madeline Budan, Kayla Edgerly and Grace Wagner all sit behind a witch hazel tree, which brightens up an Indiana autumn with yellow flowers that bloom from October to December.

Featured Stories

Man measures trees in forest.
Prototype forest growth model demonstrated for Peru application

The U.S. Forest Service invested decades of work and tens of millions of dollars to develop a...

Read More
A maple syrup producer looks out over his processing equipment.
Researchers Seek Maple Syrup Producer Feedback with New Survey

Researchers are working to scale up the green production of maple syrup in the Central Hardwood...

Read More
A man with glasses looks through a microscope in a laboratory, illuminated by contrasting blue and red lighting.
Fly’s eye opens window into important biological processes

The eyes are the window to the soul, according to an old saying. But Purdue University’s...

Read More
A young Geriann Albers holds a coyote pup; Albers holds a red-winged blackbird; Albers holds her Chase S. Osborn plaque.
Meet Geriann Albers: 2025 Chase S. Osborn Early Career Award Recipient

For her contributions to and impact on wildlife management in the state of Indiana, Geriann...

Read More
From left, lab members Jieun Woo, Dekun Cheng and professor Weicang Wang look under the sterile hood of their lab at a petri dish.
How do PFAS affect gut health?

PFAS have been shown to increase risks to immunity, reproductive health, developmental delays,...

Read More
Senior Isaac Johnson sprays invasive species, conducts midstory control and stands next to a tree he felled during his summer as a Forestry and Natural Resources intern.
FNR Field Report: Isaac Johnson

Senior Isaac Johnson, a forestry major with a concentration in forest management, worked as an...

Read More