Sakura is not only flower which bloom in spring in Japan. Check out Tsutsuji at Iwaneyama Tsutsuji Garden. Thousands of Tsutsuji trees bloom beautiful purple flowers which covers entire mountain. It gives you excellent landscape from both top of the hill or bottom, and also all the hiking courses in the flower garden becomes beautiful flower tunnel. There are also other beautiful flowers which blooms almost the same time, such as Yama-zakura, Someiyoshino, Shidare-zakura, Tubaki, and Fuji.
Some of the Tsutsuji trees are planted by Isobe Family who was one of samurai of Shingen Takeda. Also, many of Tsutsuji are planted about 100 years ago.
Definitely, one of the must see spot around Chichibu in Spring.