His teammate Canadian left-winger Raheem Edwards was also found guilty of the same offence has been handed similar punishment.
Los Angeles FC was also given a warning after being found in violation of the league's "mass confrontation policy" during its weekend match with the San Jose Earthquakes.
Blessing, per his high standard, has had a slow start to the MLS season. After 16 games, he can only boast of one goal and has not assisted a single goal.
This is his fourth year at the club following his transfer from Sporting KC in late 2017.
Los Angeles are currently 7th with 23 points which guarantees them a place in the final series playoffs.
However, they are far ahead of the chasing pack and must lift up their game to avoid missing out on qualification.
The 24-year-old has been based in the United States since January 2017 when he departed Ghana following a stunning 2015/16 season in the top-flight.
Blessing bagged 17 goals to top the goal-scoring chart that season. Read Full Story