Kadomatsu

Kadomatsu (門松, "gate pine") are traditional Japanese decorations made for the New Year.

Historically, kadomatsu was often made with pine wood, but these days bamboo is more common.

Designs for kadomatsu vary depending on region but are typically made of pine, bamboo, and sometimes ume tree sprigs which represent longevity, prosperity and steadfastness, respectively.

[2] "The fundamental function of the New Year ceremonies is to honor and receive the toshigami (deity), who will then bring a bountiful harvest for farmers and bestow the ancestors' blessing on everyone."

After January 15 (or in many instances the 19th) the kadomatsu is burned to appease the kami or toshigami and release them.