Even though autumn had its official start three weeks ago, I had my first foray into fall on Saturday's tree tour through my own neighborhood Arden Park, hosted by the Sacramento Tree Foundation. The tree tours were started over five years ago by longtime Sacramento Tree Foundation member Fran Clarke. It was Clarke's goal to make the community aware of the many spectacular trees found in Sacramento. Eighteen resident citizens, from 2 years age to retired, gathered at La Sierra Park for an informational walk-about with Sacramento Tree Foundation stewardship coordinator Luanne Leineke. "The trees are not only beautiful, they play important roles in our community," Leineke said. "They help