Belle Plaine KS Oleander on the Bartlett Arboretum By Thomas Fox Averill • Sep 7, 2019 Kansas Sampler Foundation Listen Listening... / 4:54 Folks, the older I get the more I like to visit places that have a long history. “What about the Bartlett Arboretum?” I asked Iola Humboldt. She consulted her Kansas map, but couldn’t find it. “Let’s just drive to Belle Plain,” I insisted.