On Sept. 24, 2021, a Queensland kauri (Agathis robusta) in The Huntington's Rose Garden was designated as a California Big Tree, The Huntington's first such honor. On Nov. 5, Matt Ritter, professor of botany at California Polytechnic State University, San Luis Obispo, who serves as the coordinator for the California Big Tree Registry, paid a visit to The Huntington for a ceremony to officially certify the tree's status as the largest Queensland kauri in the state.