In April, Sakura (cherry blossoms, 桜) is the most popular flowers/trees.
Some of the places famous for sakura is crowded because of festival in daytime and hanami (cherry blossom viewing, 花見) : drinking party under cherry blossoms.
But in Japan you can easily watch cherry blossoms at a small park, schoolyard, or street.
Upper pictures are one of the most popular streets with Sakura (Sagamihara, Kanagawa).Sakura is very beautiful, nice for new April season to celebrate graduation, entrance into schools and companies etc, every startup.
