Numerous varieties of Dogwood are represented in the insignia of U.S. states and Canadian provinces. It is possible that the common name of Dogwood may have come because at one time "dogs were washed with a brew of its bark, hence Dogwood."

The California poppy is the California state flower. It was selected as the state flower by the California State Floral Society in December 1890, winning out over the Mariposa lily and the Matilija poppy by a landslide, but the state legislature did not make the selection official until 1903. April 6 of each year is designated "California Poppy Day."

The California poppy is also known as the flame flower, la amapola, and copa de oro (cup of gold).

Just simply alive,
Both of us, I
And the poppy.
—Issa (1763-1827)

According to the American Daffodil Society, squirrels and other rodents do not eat daffodil bulbs. Apparently, the bulbs and leaves contain poisonous crystals which only certain insects can eat with impunity. They may, however, dig up the bulbs.

Camellias originated in subtropical regions in China, Japan and neighbouring countries. They love warm wet summers and moderately cold dry winters, but are grown around the world in a wide range of climatic conditions. Sacramento, California, is called the Camellia City because of all the Camellia japonicas that bloom in early spring.