Due to weather, the Holiday Open House will not be held on Dec. 1 as originally planned. It has been postponed one week to Saturday, Dec. 8.

Petaluma's downtown merchants host the annual Holiday Open House from 11 a.m. to 5 p.m. Saturday, Dec. 8.

Participating downtown stores will be offering hot cider, hors d'oeuvres, events, raffles, sales and other treats. There will also be carolers and horse and carriage rides from noon to 4 p.m. in Helen Putnam Plaza. Rides are free for kids 12 and under and $5 for adults.

Santa Claus will be available for pictures during the open house, and every Friday, Saturday and Sunday until Dec. 23 at the Landmark Building, 35 Petaluma Blvd. North.

For details, call 762-9348 or visit www.petalu madowntown.com.