WASHINGTON — Melania Trump's cranberry topiary trees may have left some of her critics seeing red, but they turned out to be a Christmas hit — one of several new ideas the Trumps introduced this holiday season.

In a four-week stretch of 21 holiday parties, the president also did fewer official photo ops and largely froze out the media. But in time-honored tradition, politicos still used the celebrations to squeeze in last-minute deal-making.

Many of the soirees unfolded under the threat of a partial government shutdown that took effect Saturday.

A stalemate with Congress over Trump's demand for $5.7 billion to build a wall on the U.S.-Mexico border forced the president to delay his plan to shift the merrymaking to his Florida estate on Friday. He remained in Washington while his wife and son, Barron, flew to Palm Beach without him.

Mrs. Trump's decision to place more than 40 red trees on a green carpet along the East Wing colonnade turned out to be quite the attraction: Pedestrian traffic jams formed as guests clamored to be photographed in front of the unusual holiday landscape.

“Every single person that came through the East Wing stopped for a photo,” said conservative commentator Paris Dennard, a recent guest.

Armstrong Williams, another conservative commentator, tweeted photos of himself posing in front of the trees made using fake berry branches.

“I thought it was just classy,” he said. “Great for photos.”

Trump and the first lady on Wednesday hosted the final two parties of the season, where guests feasted on lamb chops, shrimp and potato latkes along with a dessert bar that included lemon tart, coconut cake and Christmas cookies. Champagne and eggnog flowed freely.

Guests said the affairs amounted to festive reunions largely devoid of overt political talk while folks who'd been out of touch spent time catching up.

Sebastian Gorka, a former Trump national security aide, called the atmosphere a “true celebration of America's Judeo-Christian heritage and our oldest traditions.”

Largely absent from the festivities this year was the traditional opportunity for guests to have a picture taken with Trump and his wife, a time-consuming process that requires the president and first lady to stand for hours, grinning, posing and making small talk with hundreds of guests, some of whom they hardly know.

Trump retained the photo tradition for members of the U.S. Secret Service, law enforcement and the military, as well as staff who work in the residence, according to a White House official who declined to be identified discussing details of the private receptions.

Except for two Hanukkah receptions in the East Room, many of the holiday gatherings took place in the Grand Foyer, the open area on the State Floor across from the Blue Room.

Left off the holiday schedule was the annual party for the White House press corps, a likely result of Trump's sour relations with journalists who cover him and the administration.

As an alternative, the White House said it has arranged tours for reporters and their families who have asked to see the decorations.