An Orange Sulphur in Howard Co., Maryland (8/12/2012).

Photo by Nancy Magnusson MBP List

An Orange Sulphur found by students at Jemicy School in Baltimore Co., Maryland (7/29/2014).

View Record Details Photo by Emily Stanley MBP List

An Orange Sulphur in Frederick Co., Maryland (9/11/2016).

View Record Details Photo by Andy Wilson MBP List

A nectaring Orange Sulphur found in Prince George's Co., Maryland (11/5/2005).

Photo by Jim Brighton MBP List

An Orange Sulphur in Caroline Co., Maryland (7/17/2016).

View Record Details Photo by Jim Brighton MBP List

An Orange Sulphur in Kent Co., Maryland (7/12/2014).

View Record Details Photo by Nancy Martin MBP List

An Orange Sulphur in Baltimore City, Maryland (6/16/2006).

View Record Details Photo by Thomas Wilson MBP List

An Orange Sulphur in Montgomery Co., Maryland (7/19/2013).

Photo by Max Wilson MBP List

An Orange Sulphur in Carroll Co., Maryland (7/25/2019).

View Record Details Photo by Adam Nickey MBP List

Orange Sulphur in Garrett Co., Maryland (9/12/2021). (c) Josh Emm, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 490352 - Psn: 55)

Orange Sulphur in Garrett Co., Maryland (9/12/2021). (c) Josh Emm, some rights reserved (CC BY-NC).

View Record Details Photo by Josh Emm MBP List

Orange Sulphur in Dorchester Co., Maryland (8/8/2020). (c) rborchelt, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 709249 - Psn: 78)

Orange Sulphur in Dorchester Co., Maryland (8/8/2020). (c) rborchelt, some rights reserved (CC BY-NC).

View Record Details Photo by rborchelt via iNaturalist MBP List

An Orange Sulphur in Anne Arundel Co., Maryland (10/16/2012).

Photo by Don Haskins MBP List

An Orange Sulphur (white form) in Howard Co., Maryland (8/23/2015).

View Record Details Photo by Kevin Heffernan MBP List

Orange Sulphur in Howard Co., Maryland (7/28/2018). (c) Tim Frye, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 247784 - Psn: 88)

Orange Sulphur in Howard Co., Maryland (7/28/2018). (c) Tim Frye, some rights reserved (CC BY-NC).

View Record Details Photo by Tim Frye via iNaturalist MBP List

Orange Sulphur in Cecil Co., Maryland (7/5/2017). (c) apistopanchax, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 413143 - Psn: 88)

Orange Sulphur in Cecil Co., Maryland (7/5/2017). (c) apistopanchax, some rights reserved (CC BY-NC).

View Record Details Photo by Josh Emm MBP List

Orange Sulphurs in Carroll Co., Maryland (5/11/2012).

View Record Details Photo by Frode Jacobsen MBP List

An Orange Sulphur in Howard Co., Maryland (7/16/2017).

View Record Details Photo by Sue Muller MBP List

Orange Sulphur eggs on White Clover in Cecil Co., Maryland (9/25/2017).

View Record Details Photo by Josh Emm MBP List

An Orange Sulphur egg deposited on White Clover in Harford Co., Maryland (6/1/2019).

View Record Details Photo by Josh Emm MBP List

Orange Sulphur in Frederick Co., Maryland (6/21/2025). (c) tpw1986, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>) (Photo ID: 1480220 - Psn: 200)

Orange Sulphur in Frederick Co., Maryland (6/21/2025). (c) tpw1986, some rights reserved (CC BY-NC)

View Record Details Photo by tpw1986 via iNaturalist MBP List

Map Snapshot

1,493 Records

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Status

The Orange Sulphur (Colias eurytheme), like its close relative, the Clouded Sulphur, has a huge range encompassing much of North America. This butterfly can be a very common sight in open habitats, including agricultural areas and roadsides. It is particularly attracted to legumes, including alfalfa (Butterflies of Maryland: A Biological Summary and Checklist by Lynn Davidson & Richard Smith; Brock & Kaufman 2003).

Relationships

Orange Sulphur uses a variety of legumes, including clovers (Trifolium), alfalfa (Medicago sativa), and the introduced crownvetch (Securigera varia) as larval food plants.

Seasonality Summary

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Resources

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Citations

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Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

An Orange Sulphur in Howard Co., Maryland (8/12/2012). Media by Nancy Magnusson.

An Orange Sulphur found by students at Jemicy School in Baltimore Co., Maryland (7/29/2014). View Record Details Media by Emily Stanley.

An Orange Sulphur in Frederick Co., Maryland (9/11/2016). View Record Details Media by Andy Wilson.

A nectaring Orange Sulphur found in Prince George's Co., Maryland (11/5/2005). Media by Jim Brighton.

An Orange Sulphur in Caroline Co., Maryland (7/17/2016). View Record Details Media by Jim Brighton.

An Orange Sulphur in Kent Co., Maryland (7/12/2014). View Record Details Media by Nancy Martin.

An Orange Sulphur in Baltimore City, Maryland (6/16/2006). View Record Details Media by Thomas Wilson.

An Orange Sulphur in Montgomery Co., Maryland (7/19/2013). Media by Max Wilson.

An Orange Sulphur in Carroll Co., Maryland (7/25/2019). View Record Details Media by Adam Nickey.

Orange Sulphur in Garrett Co., Maryland (9/12/2021). (c) Josh Emm, some rights reserved (CC BY-NC). View Record Details Media by Josh Emm.

Orange Sulphur in Dorchester Co., Maryland (8/8/2020). (c) rborchelt, some rights reserved (CC BY-NC). View Record Details Media by rborchelt via iNaturalist.

An Orange Sulphur in Anne Arundel Co., Maryland (10/16/2012). Media by Don Haskins.

An Orange Sulphur (white form) in Howard Co., Maryland (8/23/2015). View Record Details Media by Kevin Heffernan.

Orange Sulphur in Howard Co., Maryland (7/28/2018). (c) Tim Frye, some rights reserved (CC BY-NC). View Record Details Media by Tim Frye via iNaturalist.

Orange Sulphur in Cecil Co., Maryland (7/5/2017). (c) apistopanchax, some rights reserved (CC BY-NC). View Record Details Media by Josh Emm.

Orange Sulphurs in Carroll Co., Maryland (5/11/2012). View Record Details Media by Frode Jacobsen.

An Orange Sulphur in Howard Co., Maryland (7/16/2017). View Record Details Media by Sue Muller.

Orange Sulphur eggs on White Clover in Cecil Co., Maryland (9/25/2017). View Record Details Media by Josh Emm.

An Orange Sulphur egg deposited on White Clover in Harford Co., Maryland (6/1/2019). View Record Details Media by Josh Emm.

Orange Sulphur in Frederick Co., Maryland (6/21/2025). (c) tpw1986, some rights reserved (CC BY-NC) View Record Details Media by tpw1986 via iNaturalist.