From City Ordinance, Section 11-217, all decorations (except for permanent vases) must be removed from graves after Memorial Day (for 2011, the removal should be completed by Tuesday, June 7), Mother's Day, Father's Day (for 2011, the removal should be completed by Tuesday, June 28) , and Christmas THE MONDAY FOLLOWING THE HOLIDAY (when the holiday is on Sunday, remove items by the Monday the week after, not the Monday after the holiday). After those dates, all decorations will be removed by the City. After Christmas, decorations must be removed seven days after the 25th of December (which could fall on any day of the week).
During non-holidays, no decorations are allowed on graves except for flowers in permanent vases.
Other than these holidays, no decorations of any kind are allowed on graves in the Dewey Cemetery. The only exception is for flowers put into permanent vases on a headstone.