I don't live there but have friends that live there...yes about the snow...and enough that they have a snowblower to get the snow off the driveway in the mornings so that they can go to work...
...for native plants, there is an excellent chapter of the California Native Plant Society, which has regularly scheduled meetings, has 2 plant sales a year, and is locally politically active as well...
El Dorado Chapter CNPS
In this area, I highly recommend buying your plants from local nurseries, for the most part, because they will have plants that will survive your local cold, your local soils, under pine trees, repel deer, etc. Buying at Home Depot in Folsom, they will have hibiscus and other warm-loving plants for sale that will not survive up in PP!