A Cotati creek care project enters its 13th year Saturday, with a morning devoted to planting and cleaning up Laguna de Santa Rosa.

The project, run by the nonprofit Cotati Creek Critters, will take advantage of rain-soaked ground to focus on planting "understory" plants — those that live in the shade of larger plants, said Wade Belew, the group's stewardship coordinator.

"We're always looking for more people and we often have a lull in January," he said.

He said the cleanup days, which are held throughout the year, are generally attended by 15 to 40 people.

On Saturday, other work may include pruning existing plants and clearing storm debris and other trash.

The 14-mile long laguna channel begins a few blocks behind Oliver's Market, runs beneath Highway 101 and extends to Sebastopol and the Russian River, draining a 254-square-mile watershed.

The event is 9 a.m. to 12 p.m. Volunteers are to meet at the City of Cotati Well Lot #2, also known as Ladybug Lot, on Lakewood Avenue in Cotati.

More information can be found at www.cotaticreekcritters.info or by calling Jenny Blaker, outreach coordinator, at 792-4422 or Belew, at 694-0586.