Tree Catalog 2019 These photos catalog all the trees at Callaway Farm in northern Illinois as of late May 2019. American Linden Arborvitae Blackgum Chokecherry Eastern Redbud Eastern Redbud Eastern Redbud Eastern Redbud Elm (‘Homestead’) Honey Locust Red Oak River Birch River Birch Serviceberry Sugar Maple London Planetree London Planetree Tulip Tree Tulip Tree Birch (‘Whitespire’) White Swamp Oak Colorado Blue Spruce Norway Spruce White Spruce White Pine Concolor Fir Orchard – Mix of Apple, Peach & Pear