The Shamrock Topiary is a limited-time decoration released on March 7, 2013 as part of the St. Patrick's Day 2013 Event. It was given for free as a reward when the player completed the St. Paddy's Day quest line.
It was re-released for 10000 Cash for the 2014, 2015 and 2016 events.
It returned on March 7, 2018 during the Homer vs. the 18th Amendment 2018 Event.