Trash and discarded furniture lined narrow streets across Boston over the Labor Day move-in weekend as a long-standing tradition known as “Allston Christmas” produced piles of mattresses, bedding and household debris that residents said turned sidewalks and roadways into a hazard.

The unofficial ritual, which coincides with many colleges beginning classes around Labor Day, sees students leaving unwanted items on curbs for others to take. Allston and nearby neighborhoods bordering Northeastern University, Tufts University, Boston University and the Massachusetts Institute of Technology were among the hardest hit this year, with pedestrians and moving trucks negotiating jumbles of mattresses, sheets and furniture.

Local social media posts and videos captured the scale of the cleanups. Boston-based TikTok creator Everyday Maggie said the city’s older street grid compounds the problem. “A lot of the roads were built for horses and things like that,” she told reporters, adding that congestion from moving activity often prompts residents to leave items on the street rather than transport them. She said that while some years yield useful finds, this year produced more scattered trash than salvageable goods.

A report in the Boston Globe said the city received roughly four times the usual number of trash complaints between Sept. 1 and Sept. 3. Residents posted images and messages on X and other platforms expressing anger at what they described as littering and a lack of accountability. “Allston Christmas is bulls***. They made up a name so that they could throw their trash all over the streets. It’s disgusting,” one user wrote. Another asked why tenants are not fined for leaving junk on sidewalks.

Longtime Allston resident Julie Gagnon told the Globe she found the quantity and placement of discarded items disrespectful. “It definitely is disrespectful — the amount of stuff and the location where people put it,” she said.

The tradition dates back years and is tied to the overlapping housing cycles of college students, many of whom move on or off campus in early September. Some neighbors and scavengers treat the event like a citywide yard sale, retrieving furniture and household items left curbside. Others see the discarded materials as a public-health and safety problem, with mattresses and loose debris blocking sidewalks and occasionally spilling into traffic lanes.

Boston Public Works crews have historically responded with coordinated cleanups in the days after the peak of move-ins. Everyday Maggie said that in past years a major collection follows quickly, and that “a couple of days go by and it’s almost as if Allston Christmas or moving day never happened.” Media outlets said they reached out to Boston Public Works for comment about this year’s volumes and enforcement policies.

City officials have in past years advised residents and landlords on proper disposal methods and schedules for bulk trash pickup, while urging tenants to coordinate with property managers ahead of move-outs. Municipal rules and enforcement around bulk disposal, fines and landlord responsibility have been the subject of debate among neighbors, students and housing authorities.

The surge in curbside refuse during the Labor Day weekend has reopened conversations about balancing a long-standing student tradition with neighborhood livability and public-safety concerns. While some residents appreciate the occasional reclaimed item, others say the disorder and occasional hazards created during the move-in surge outweigh any benefits. City crews, social media posts and residents’ accounts together sketch a familiar pattern: a weekend of intense, visible waste followed by municipal cleanup efforts and renewed discussion about how the city and its institutions manage seasonal housing transitions.