The Monarch Butterfly Migration
The monarch butterfly migration happens yearly as the weather cools off. Monarch butterflies overwinter on the Pacific Coast every winter, from Pismo Beach to Baja California as well as the southern part of Mexico. The monarch butterfly migration travels from as far away as Canada, journeying thousands of miles to reach their overwintering sites. These breathtaking butterflies cluster together in dense groups on trees, creating a vibrant tapestry of orange and black. An innate sense of direction guides this incredible migration, as they navigate using the sun’s position and Earth’s magnetic fields. California State Parks is setting a stellar example in safeguarding the cherished spots of monarch butterfly migration! A good number of these snug winter abodes are nestled within California State Park territories, and they’ve got knowledgeable guides at many locations to share the butterfly love. Source
How do they know?
Along with the astonishing numbers found at overwintering sites along the California coast, even more astonishing is the story of how the monarch butterfly migration arrived here. Two populations of monarch butterflies call the United States home. The group living east of the Rocky Mountains migrates south to spend the winter in Mexico. Those living west of the Rockies migrate to the coast of central and southern California. Migration is not an uncommon phenomenon. So, what is so unusual about the monarch butterfly migration? The western Monarchs’ summer range extends from the Rockies to the Pacific Ocean and north as far as southern Canada. In October, as colder weather approaches, the butterflies instinctively know they must fly south to escape the freezing temperatures. Some have to fly over 3,000 miles. The monarch butterflies arrive at the overwintering sites by air currents and thermals. Following an ancient migratory route that is instinctively known. Once they reach their destination, the butterflies cluster together in dense colonies, covering trees in a breathtaking display of color and life. This annual monarch butterfly migration is not just a marvel of nature, but also a reminder of the interconnectedness of ecosystems and the importance of preserving these vital habitats for future generations. Source
Milkweed and the Monarch Migration
Monarch butterflies have a beautiful relationship with milkweed, they will only lay their larvae on plants within the Asclepias plant species. Milkweed is as diverse as the places it grows, thriving in all climates and temperatures. Over 140 different kinds of milkweed exist, with more than 14 native species in the United States alone. But sadly, many of these species are becoming rare, threatened, or even endangered. Let’s show them some love! Source
The monarch butterfly migration is hazardous and many won’t make it. Monarchs are daytime travelers, seeking out a roost at night. During the chilly autumn evenings, they cluster closely together in roosting sites along their journey. These roosting sites play a crucial role in their migration, with many locations being reused annually. Typically, they prefer pine, fir, and cedar trees for roosting, as these trees have dense canopies that help regulate temperature and humidity at the site. In the mornings, monarchs soak up the sunlight to warm themselves and then continue their journey south. Source
The Spring Journey North
As spring approaches, the monarchs will once again embark on their long monarch butterfly migration northward, continuing the cycle of life and migration. How can you see these beauties, how can you help? Plant milkweed and have plants blooming without pesticides. Monarchs will only lay their eggs on milkweed. Wherever you live, there is a type of milkweed that grows well in your area. Milkweed is easy to grow, that’s why it was named a weed. I have seen milkweed growing wild in the Anza Borrego Desert, Joshua Tree National Park, Palomar Mountain, and Salton Sea. Let us know if you need help selecting the right type of milkweed, we have many types available for sale on our website, reach out with questions or special orders. This month we are highlighting the So Cal Xerces seed mix. It has seeds that will bloom in all four seasons to help pollinators in all seasons. Together we are Wings of Change. Planting the seeds and spreading the word to help our pollinators and protect our earth.
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