The American Horticultural Society has provided a map of the United States with a link to each state's Master Gardener program website. This remarkable tool can be used to find out what states and groups in other states are doing.
To visit the MGV map go to:
There are also links to Canadian Master Gardener associations as well.
Please note - because some of the links are on states that show very small on the page making it rather tricky to click on them to get linked to that website, you might want to consider ramping up the size of the map by pressing Ctrl/+ several times. You can bring it back to normal by pressing Ctrl/- several times. In some instances you can simply click on the state abbreviation of these tiny links to access those websites.