Spotted Water Hemlock in Caroline Co., Maryland (7/19/2016).

View Record Details Photo by Wayne Longbottom MBP List

Spotted Water Hemlock in Dorchester Co., Maryland (7/31/2016).

View Record Details Photo by Wayne Longbottom MBP List

Spotted Water Hemlock in Caroline Co., Maryland (7/13/2016).

View Record Details Photo by Wayne Longbottom MBP List

Spotted Water Hemlock blooming in Frederick Co., Maryland (7/16/2017).

View Record Details Photo by Robert Warren MBP List

Spotted Water Hemlock blooming in Howard Co., Maryland (7/13/2014).

View Record Details Photo by Joanne Solem MBP List

A Spotted Water Hemlock in Howard Co., Maryland (7/13/2014).

Photo by Joanne Solem MBP List

Spotted Water Hemlock in Anne Arundel Co., Maryland (7/5/2011).

View Record Details Photo by Bill Harms MBP List

Spotted Water Hemlock in Charles Co., Maryland (7/9/2016).

View Record Details Photo by Stewart Grand MBP List

Spotted Water Hemlock in Caroline Co., Maryland (8/2/2016).

View Record Details Photo by Wayne Longbottom MBP List

Spotted Water Hemlock in Dorchester Co., Maryland (7/15/2007).

View Record Details Photo by Gary Van Velsir MBP List

Spotted Water Hemlock in Allegany Co., Maryland (7/3/1981).

View Record Details Photo by Jim Stasz MBP List

Hemlock Water-parsnip in Garrett Co., Maryland (6/21/2014).

View Record Details Photo by Jim Stasz MBP List

Spotted Water Hemlock in Howard Co., Maryland (8/8/2010).

View Record Details Photo by Bill Harms MBP List

Spotted Water Hemlock in Howard Co., Maryland (7/17/2018). Collected and processed by Helen Lowe Metzman.

View Record Details Photo by USGS PWRC MBP List

Spotted Water Hemlock in Howard Co., Maryland (7/17/2018). Collected and processed by Helen Lowe Metzman.

View Record Details Photo by USGS PWRC MBP List

Spotted Water Hemlock in Howard Co., Maryland (7/17/2018). Collected and processed by Helen Lowe Metzman.

View Record Details Photo by USGS PWRC MBP List

Spotted Water Hemlock in Baltimore Co., Maryland (8/13/2020). (c) Peter M Martin, some rights reserved (<a rel='license' href='http://creativecommons.org/licenses/by-nc/4.0/'>CC BY-NC</a>). (Photo ID: 303294 - Psn: 200)

Spotted Water Hemlock in Baltimore Co., Maryland (8/13/2020). (c) Peter M Martin, some rights reserved (CC BY-NC).

View Record Details Photo by Peter M Martin via iNaturalist MBP List

Spotted Water Hemlock in Baltimore Co., Maryland (8/13/2020). (c) Peter M Martin, some rights reserved (CC BY-NC).

View Record Details Photo by Peter M Martin via iNaturalist MBP List

Spotted Water Hemlock in Howard Co., Maryland (7/2/2018). (c) Bill Hubick, all rights reserved. (Photo ID: 1290893 - Psn: 200)

View Record Details Photo by Bill Hubick MBP List

Spotted Water Hemlock, the most poisonous plant in North America. Children have died using the hollow stems as blowguns.in Howard Co., Maryland (7/17/2018). Collected and processed by Helen Lowe Metzman.

View Record Details Photo by USGS PWRC MBP List

Map Snapshot

322 Records

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Relationships

Host plant for Eastern Black Swallowtail.

Seasonality Summary

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Resources

View at iNaturalist Search Google Images Search MBP Facebook posts

View at Maryland Plant Atlas Search Flora of North America Search Mid-Atlantic Herbaria Consortium Search Norton-Brown Herbarium Search MNPS Facebook posts

Citations

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

Spotted Water Hemlock in Caroline Co., Maryland (7/19/2016). View Record Details Media by Wayne Longbottom.

Spotted Water Hemlock in Dorchester Co., Maryland (7/31/2016). View Record Details Media by Wayne Longbottom.

Spotted Water Hemlock in Caroline Co., Maryland (7/13/2016). View Record Details Media by Wayne Longbottom.

Spotted Water Hemlock blooming in Frederick Co., Maryland (7/16/2017). View Record Details Media by Robert Warren.

Spotted Water Hemlock blooming in Howard Co., Maryland (7/13/2014). View Record Details Media by Joanne Solem.

A Spotted Water Hemlock in Howard Co., Maryland (7/13/2014). Media by Joanne Solem.

Spotted Water Hemlock in Anne Arundel Co., Maryland (7/5/2011). View Record Details Media by Bill Harms.

Spotted Water Hemlock in Charles Co., Maryland (7/9/2016). View Record Details Media by Stewart Grand.

Spotted Water Hemlock in Caroline Co., Maryland (8/2/2016). View Record Details Media by Wayne Longbottom.

Spotted Water Hemlock in Dorchester Co., Maryland (7/15/2007). View Record Details Media by Gary Van Velsir.

Spotted Water Hemlock in Allegany Co., Maryland (7/3/1981). View Record Details Media by Jim Stasz.

Hemlock Water-parsnip in Garrett Co., Maryland (6/21/2014). View Record Details Media by Jim Stasz.

Spotted Water Hemlock in Howard Co., Maryland (8/8/2010). View Record Details Media by Bill Harms.

Spotted Water Hemlock in Howard Co., Maryland (7/17/2018). Collected and processed by Helen Lowe Metzman. View Record Details Media by USGS PWRC.

Spotted Water Hemlock in Baltimore Co., Maryland (8/13/2020). (c) Peter M Martin, some rights reserved (CC BY-NC). View Record Details Media by Peter M Martin via iNaturalist.