"We are glad to have Joel under contract for next season," said Blues General Manager Doug Armstrong. "He is an important part of our defensive unit and we are looking forward to another successful year."
In 2018-19, Edmundson posted two goals and nine assists (11 points) and a plus-8 rating in 64 games during the regular season. In the Stanley Cup Playoffs, Edmundson had one goal and six assists (seven points) in 22 games.
The Brandon, Manitoba native was drafted by the Blues in the second round (No. 46 overall) in 2011 and has played in 269 career NHL games, recording 13 goals and 39 assists (52 points).