Late February through mid-March is peak season when over 3,000 plum trees bloom. The Mito Plum Festival runs during this period with evening illuminations. The garden opens year-round with azaleas in spring and bush clover in autumn. Visiting outside plum season means free admission and fewer crowds.
Admission costs 300 yen for adults during plum season. Entry is free outside plum season and free year-round for Ibaraki residents. The garden has no closing days.
Tokugawa Nariaki established it in 1842 as a public space for all social classes. It ranks with Kenrokuen and Korakuen for its 100 varieties of plum trees, historic significance, and landscape design contrasting refined gardens with natural cedar forests.
The main feature is 3,000 plum trees in 100 varieties. Visit the Kobuntei house for views of the garden and Lake Senba. Explore bamboo groves, cedar forests, and seasonal flowers throughout the grounds.