Originally from the United Kingdom, the silver Y moth has steadily spread across the globe. With large populations in Europe, Asia, and Africa, it is clear that the silver Y moth is capable of not only surviving, but thriving in an array of different climates. Approximately 50% of the United States' climates would be suitable environments for the silver Y moth. The caterpillars feed on plants that grow low to the ground, most often potatoes, cabbage, tomatoes, alfalfa, lettuce, and other common row crops.