The Lansing Arboretum is a collection of trees located within Kenneth W. Bernard Community Park, a 128-acre City of Lansing, Kansas property that has been open to the public since 2009. The park includes many amenities such as natural surface walking trails, a pond, the Lansing Veterans Memorial, a shelter, a playground, soccer fields, and a baseball and softball complex. Since the park opened, numerous trees have been planted throughout the grounds, representing at least 26 different species. Some of these trees date to the earliest years of the park, while others were planted as recently as last year. The City of Lansing has been recognized as Tree City USA for 25 years, and establishing an arboretum has long been a goal of the Lansing Tree Board. ArbNet provided the city with clear criteria to achieve that goal and an avenue to formally recognize this community resource.

Many of the trees within Bernard Park are memorial trees planted in dedication to individuals and events through the City Memorial Tree Program. Additional trees have been planted in celebration of Arbor Day and as part of the ongoing development of the park. Several trees were donated by the Greenteam from Westar Energy (now Evergy), and were planted by city staff and community volunteers. City staff has worked to inventory trees throughout the park and to make that information available to the public for education and enjoyment.

Before becoming a city park, the property was farmland for many years. Three small tributaries run through the site and are lined with native woodland containing mature and significant trees. An established hedgerow grows along the western boundary, and undeveloped areas of the park also contain naturally occurring trees. The city has sought to nurture the best of these existing and desirable trees with the intention of preserving them as the park continues to develop. As a result, the arboretum collection is comprised of planted specimens and is enhanced by the native landscape that was present long before the park was created.