The American Copper butterfly, despite its name, actually relies on non-native host plants in our area. The two primary host plants for this species are sheep sorrel (Rumex acetosella) and Curly Dock (Rumex crispus). These plants are not native to North America but have become established in many regions.
I have personally observed American Copper butterflies frequently in dry, disturbed areas. These butterflies seem to prefer habitats that have been affected by human activities, such as construction sites or abandoned fields. It is interesting to note that even though this butterfly is called the “American” Copper, it has adapted to thrive in environments that are not necessarily native to the region.
Sheep sorrel, also known as sour weed, is a low-growing plant with reddish-green leaves and small, red flowers. It is often found in open grasslands, meadows, and disturbed areas. The leaves of sheep sorrel have a sour taste, hence the common name. This plant provides a suitable food source for the American Copper butterfly larvae, or caterpillars, to feed on.
Curly Dock, on the other hand, is a taller plant with broad, lance-shaped leaves and clusters of small greenish flowers that eventually turn reddish-brown. It is commonly found along roadsides, in fields, and other disturbed areas. The leaves of Curly Dock are slightly sour and can be eaten by humans as well. The American Copper butterfly larvae also rely on Curly Dock as a host plant for their development.
It is fascinating to observe how certain species can adapt and utilize non-native plants for their survival. The American Copper butterfly, despite its reliance on non-native host plants, has managed to establish a presence in our local ecosystems. This serves as a reminder that nature is constantly evolving and adapting to changing environments.
The American Copper butterfly relies on non-native host plants such as sheep sorrel and Curly Dock for its survival. These plants are often found in dry, disturbed areas and have become well-established in our region. While it may seem ironic that this “American” butterfly depends on non-native plants, it is a testament to the adaptability and resilience of nature.
