The 2019 International Master Gardener Conference (IMGC) will be held June 16-21, in Valley Forge, Pennsylvania. Unlike the Extension Master Gardener (EMG) Coordinators Conference (held even years), the IMGC is targeted more towards EMG volunteers, rather than EMG coordinators. However, it is still a wonderful way to learn from and visit with EMG coordinators from the across the United States.
Room blocks are now open for reservations, and the speaker lineup and class sessions have been announced.
Visit the conference website for the latest information, and to make your room reservation: https://www.internationalmastergardener.com/
Also, please note that I (Gail) will be away on vacation, September 20th-October 3rd.
I there a master gardener program in or near Osaka Japan
Apologies for taking so long to address your question. It escaped my attention, until just now.
There is no MG Program in Japan. The full list of Extension Master Gardener programs and affiliate programs can be found at https://mastergardener.extension.org/contact-us/find-a-program/