In Dartmouth, NS, just over the bridge, at the folklorist Helen Creighton's old house, Evergreen House, now a museum:

Trad Night
Helen Creighton Folklore Society

An evening of balladry and songs of old! Open Mic. Participants are asked to choose songs from the Helen Creighton Collection or similar collections.

When: Every second Thursday of the month

Time: 7-9pm

Where: Evergreen House aka the Dartmouth Heritage Museum

Cost: Donation

There are also regular events called I Sing Therefore I Am and the Helen Creighton Folk Club. Check the website (google is your friend here) for more info.