The Unwanted Encounter: Monarch Butterflies and Aphids
Aphids, specifically oleander aphids, have been found to pose a significant threat to the life cycle of monarch butterflies, according to a study by scientists from the University of Florida. These pests interfere with the development of monarch butterflies on tropical milkweed, a commonly used plant across the southern U.S. Monarchs heavily rely on milkweed for their survival, and aphid infestations compromise this resource. Efforts to sustain monarch populations through planting milkweed in urban areas may be hindered by high aphid densities. Researchers recommend considering native milkweed species or using insecticidal soap to control aphids on tropical milkweed. Further research is needed to explore pest management options that maintain low aphid levels without harming monarch butterflies.
