A monarch butterfly (Danaus plexippus) feeding on butterfly weed (Asclepias tuberosa). Monarch populations have been declining in abundance due to loss of habitat in the United States and deforestation at overwintering grounds in Mexico.[1]
Butterfly gardening is a way to create, improve, and maintain habitat for lepidopterans including butterflies, skippers, and moths.[2] Butterflies have four distinct life stages—egg, larva, chrysalis, and adult. In order to support and sustain butterfly populations, an ideal butterfly garden contains habitat for each life stage.
As adults, butterflies feed mainly on nectar, but they have also evolved to consume rotting fruit, tree sap, and even carrion.[6] Supporting nectarivorous adult butterflies involves planting nectar plants of different heights, color, and bloom times. Butterfly bait stations can easily be made to provide a food source for species that prefer fruit and sap. In addition to food sources, windbreaks in the form of trees and shrubs shelter butterflies and can provide larval food and overwintering grounds.[7] "Puddling" is a behavior generally done by male butterflies in which they gather to drink nutrients and water and incorporating a puddling ground for butterflies will enhance a butterfly garden.[8][9] While butterflies are not the only pollinators, creating butterfly habitat also creates habitat for bees, beetles, flies, and other pollinators.[7]
^Brower, Lincoln P.; Taylor, Orley R.; Williams, Ernest H.; Slayback, Daniel A.; Zubieta, Raul R.; Ramírez, M. Isabel (March 2012). "Decline of monarch butterflies overwintering in Mexico: is the migratory phenomenon at risk?: Decline of monarch butterflies in Mexico". Insect Conservation and Diversity. 5 (2): 95–100. doi:10.1111/j.1752-4598.2011.00142.x. hdl:2060/20140010155. S2CID86566051.
^Ômura, Hisashi; Honda, Keiichi (November 2003). "Feeding responses of adult butterflies, Nymphalis xanthomelas, Kaniska canace and Vanessa indica, to components in tree sap and rotting fruits: synergistic effects of ethanol and acetic acid on sugar responsiveness". Journal of Insect Physiology. 49 (11): 1031–1038. Bibcode:2003JInsP..49.1031O. doi:10.1016/j.jinsphys.2003.07.001. PMID14568581.