Knowledgebase
Moth in Winter? #924190
Asked February 03, 2026, 4:14 PM EST
Merrimack County New Hampshire
Expert Response
Hi, Kendall -
Thank you for reaching out the UNH Extension Infoline!
The butterfly in the excellent photos you provided is the Cabbage White Butterfly (Pieris rapae). It is a commonly seen, non-native insect that associates with broccoli, cauliflower and other cabbage family plants: https://horticulture.oregonstate.edu/oregon-vegetables/cabbage-white-butterfly
Were the house plants kept outdoors during the summer and fall? Cabbage White overwinters as a pupa on leaves of the host plant or in nearby debris. That could include the soil surrounding your houseplants. After emerging from the chrysalis, adults typically live for about three weeks: https://agsci.colostate.edu/agbio/ipm-pests/31986-2/
I hope that this information is helpful! Please feel free to reach out with any further questions.