Spectators come from all over the Central Coast and throughout the state to view the Monarchs. Visitors are greeted by knowledgeable and well-informed volunteer docents offering daily talks and information.
[caption id="attachment_774" align="alignleft" width="300" caption="Monarch Butterfly Grove in Pismo Beach"][/caption]
The butterflies form dense clusters with each one hanging with its wing down over the one below it to form a shingle effect. This provides shelter from the rain and warmth for the group. The weight of the cluster help keeps it from whipping in the wind and dislodging the butterflies.
Our colony is one of the largest in the nation.
The Monarchs that visit Pismo Beach are a special variety. They have a life span of six months as opposed to that of common Monarchs who live only six weeks. This can be attributed to a unique fat storing system. However, even with an extended life span, those butterflies that leave in March will never return.
Scientists do not know why the Monarchs consistently return to some wintering sites. In North America, those sites range from the Central and Southern California Coast to Mexico. Some scientists speculate that the insects are equipped with genetic homing systems that lead them from their summer sites in the Sierras, Florida, Canada and the Great Lakes Region in North America back to their winter locations.
On the Central Coast, Monarchs winter in Pismo Beach, Pacific Grove and Morro Bay.
During the season the Docent Trailer opens at 10am and closes at 4pm daily. Daily walks through the grove happen at 11am and 2 pm, weather permitting.