A Stormont policy review following a political row over a refusal to plant a tree for the Queen's Platinum Jubilee has proposed changes to the rules.
Finance Minister Conor Murphy ordered the audit in January after facing criticism from unionists for declining a request to plant the tree in the Stormont estate.
The DUP accused the Sinn Féin minister of “intolerance and disrespect”, but he insisted official policy dictated that only "international events" could be commemorated with tree plantings.