The beauty of Santa Cruz
Monarch Butterfly Natural Preserve
The park's Monarch Grove provides a temporary home for over 100,000 Monarchs each winter. From mid-October through the end of February, the Monarchs form a "city in the trees." The areas mild ocean air and eucalyptus grove provide a safe roost until spring. In the spring and summer, the butterflies live in the valley regions west of the Rocky Mountains where milkweed, the only plant a Monarch caterpillar eats, is plentiful.
The Monarch Grove has been declared a Natural Preserve, thus protecting the Monarchs and their winter habitat from human encroachment or harm. This is the only State Monarch Preserve in California. Access to the preserve area is limited to a handicap accessible boardwalk and observation area.