Common St. Johnswort Hypericum perforatum LinnaeusNon-native  -  Invasive    
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Theales   >   Family Hypericaceae   >   Genus Hypericum   

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Common St. Johnswort in bloom in Caroline Co., Maryland (6/16/2013). Photo by Jim Brighton. (MBP list)

Common St. Johnswort in Howard Co., Maryland (5/22/2010). Photo by Bill Harms. (MBP list)

Common St. Johnswort blooming in Harford Co., Maryland (6/24/2014). Photo by Jim Stasz. (MBP list)

Common St. Johnswort in Allegany Co., Maryland (7/11/2014). Photo by Jim Stasz. (MBP list)

Common St. Johnswort in Prince George's Co., Maryland (6/22/2017). Photo by Bill Harms. (MBP list)

Common St. Johnswort in Caroline Co., Maryland (7/4/2016). Photo by Wayne Longbottom. (MBP list)

Common St. Johnswort in Prince George's Co., Maryland (7/16/2016). Photo by Wayne Longbottom. (MBP list)

The branching stem and stem leaves of a Common St. Johnswort in Caroline Co., Maryland (6/16/2013). Photo by Jim Brighton. (MBP list)

Common St. Johnswort in Anne Arundel Co., Maryland (6/7/2011). Photo by Bill Harms. (MBP list)

Common St. Johnswort blooming in Howard Co., Maryland (7/10/2014). Photo by Joanne Solem. (MBP list)

Common St. Johnswort blooming in Howard Co., Maryland (7/10/2014). Photo by Joanne Solem. (MBP list)

Common St. Johnswort blooming in Anne Arundel Co., Maryland (8/3/2016). Photo by Robert Ferraro. (MBP list)

Common St. Johnswort blooming in Montgomery Co., Maryland (6/14/2016). Photo by Robert Ferraro. (MBP list)

Common St. Johnswort blooming in Washington Co., Maryland (6/27/2014). Photo by Kimberly Booth. (MBP list)

Common St. Johnswort blooming in Anne Arundel Co., Maryland (7/4/2014). Photo by Bill Hubick. (MBP list)

Common St. Johnswort blooming in Howard Co., Maryland (6/22/2013). Photo by Joanne Solem. (MBP list)

Common St. Johnswort starting to bloom in Dorchester Co., Maryland (6/9/2015). Photo by Jim Brighton. (MBP list)

Common St. Johnswort in bloom in Frederick Co., Maryland (6/23/2017). Photo by Robert Warren. (MBP list)

Common St. Johnswort blooming in Cecil Co., Maryland (6/25/2014). Photo by Jim Stasz. (MBP list)

Common St. Johnswort in Howard Co., Maryland (6/25/2010). Photo by Bill Harms. (MBP list)

Common St. Johnswort in Anne Arundel Co., Maryland (8/3/2016). Photo by Robert Ferraro. (MBP list)

Common St. Johnswort in Harford Co., Maryland (8/28/2016). Photo by Kirsten Johnson. (MBP list)


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MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here: https://mdinvasives.org/species-of-concern/.