Island Marble Butterfly Project

Island Marble Butterfly Project

Presentation from the March 2023 Board meeting

Seattle Times article about the Island Marble Butterfly

Progress updates

Island marble butterfly site preparation continues at Lopez Island School District. This spring, new planting rows were established inside the habitat plot to support growth of the butterfly’s native host plant, coming in 2024. Rows will be seeded in the fall of 2023 and spring 2024 with field mustard (Brassica rapa) - one of the butterfly’s three known host plants. Host plants provide female island marble butterflies a place to lay their eggs, young caterpillars with everything they need to grow, and adults with the nectar they need to power their busy lives – fulfilling almost all lifecycle needs in one plant. Fencing around the habitat plot protects all life stages of this critically endangered species and helps provide a seed supply for more island marble butterfly host plants in the future.  

The Islands Conservation Corps (ICC) created planting rows inside the habitat plot to support growth of the butterfly’s native host plant in 2024. 

Marble butterfly planting rows 


Marble Butterfly work

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