A healthy stand of poison oak along the trail in the Los Osos Oaks State Reserve along Los Osos Valley Road. New leaves are shiny with oil that includes urushiol, the itch causing ingredient.
A healthy stand of poison oak along the trail in the Los Osos Oaks State Reserve along Los Osos Valley Road. New leaves are shiny with oil that includes urushiol, the itch causing ingredient.
A healthy stand of poison oak along the trail in the Los Osos Oaks State Reserve along Los Osos Valley Road. New leaves are shiny with oil that includes urushiol, the itch causing ingredient.

Former Morro Bay man has an itch for studying poison oak

April 19, 2014 6:32 PM