Sunday afternoon they planted native species in the Golden Gate National Recreation Area in Mill Valley. The restoration is meant to help protect surrounding neighborhoods.
The Tam Fire burned 1500 acres of land five years ago.
The eucalyptus grove was removed because the trees are especially susceptible to flames and pose a danger to fire crews because of falling branches.
"The trees were subsequently removed. It was a eucalyptus forest and it needs to be restored to native coastal priority of woodland coastal scrub. And, that's a long-term process that takes a lot of time," said Maria Alvarez with the U.S. National Park Service.
The replanting usually takes place in winter when the land is moist.
Another restoration day is planned Tuesday.