How is Hanamatsuri Celebrated Elsewhere?

Buddhism is the fourth-largest religion of the world and has a Buddhist population of approximately one-billion people. While there are slight variations to the practice of Buddhism based on where you are in the world, the idea of celebrating Buddha is the same all over the world. As was mentioned earlier, in Japan flowers are used to celebrate Buddha's birthday.

In Indonesia, once a year on the full moon in either May or June, buddhists celebrate Vesak, commemorating the birth, death, and the time when Siddartha Gautama became Buddha. Candlelight processions are common, both in Indonesia as well as other places in Asia.

http://buddhism.about.com/od/buddhistholidays/ig/Images-of-Vesak/Monks-Indonesia-Meditate.htm

Buddha's birthday is also very important in South Korea. It is celebrated with a festival that lasts a week and usually ends on the same day as Vesak in other parts of Asia. Seoul, South Korea is the site of one of Buddha's grandest birthday parades in Asia.

http://www.cnn.com/2011/TRAVEL/05/09/buddha.birthday/

In China, Buddhist temples offer talks and ceremonies on Buddha's birthday. Buddhists visit the temples and burn incense, as well as bring food offerings to the monks.

http://buddhism.about.com/od/buddhistholidays/ig/Images-of-Vesak/Buddhas-BDay-China.htm

Sources:
http://en.wikipedia.org/wiki/Buddhism_by_country
http://buddhism.about.com/od/buddhistholidays/a/buddhabirthday.htm
http://en.wikipedia.org/wiki/Buddhism_in_Indonesia
http://www.cnn.com/2011/TRAVEL/05/09/buddha.birthday/