Bull Thistle Cirsium vulgare (Savi) TenoreNon-native  -  Invasive    Synonyms: Carduus lanceolatus, Cirsium lanceolatum.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Asterales   >   Family Asteraceae   >   Genus Cirsium   

[View seasonality details]
GA AL WA FR CL MO HO BA BC HA CE PG AA CV CH SM KE QA CN TA DO WI SO WO 
Bull Thistle in Garrett Co., Maryland (9/6/2009). Photo by Jim Brighton. (MBP list)

Bull Thistle bloom in Garrett Co., Maryland (9/6/2009). Photo by Jim Brighton. (MBP list)

Bull Thistle in Charles Co., Maryland (9/25/2016). Photo by Wayne Longbottom. (MBP list)

Bull Thistle in Anne Arundel Co., Maryland (7/27/2011). Photo by Bill Harms. (MBP list)

Bull Thistle in Dorchester Co., Maryland (8/1/2020). Photo by Jim Brighton. (MBP list)

Bull Thistle in Anne Arundel Co., Maryland (7/27/2020). (c) Matthew Beziat, some rights reserved (CC BY-NC). Photo by Matthew Beziat. (MBP list)

Bull Thistle in Howard Co., Maryland (5/22/2021). (c) bbirdsong, some rights reserved (CC BY-NC). Photo by bbirdsong via iNaturalist. (MBP list)

Bull Thistle in Frederick Co., Maryland (8/28/2016). Photo by Bill Hill. (MBP list)

Bull Thistle in seed in Anne Arundel Co., Maryland (7/27/2011). Photo by Bill Harms. (MBP list)

Bull Thistle in Anne Arundel Co., Maryland (8/12/2010). Photo by Bill Harms. (MBP list)

Bull Thistle in Baltimore Co., Maryland (11/29/2020). (c) helenmoos, some rights reserved (CC BY-NC). Photo by helenmoos via iNaturalist. (MBP list)

Bull Thistle (winter aspect) in Anne Arundel Co., Maryland (1/7/2018). Photo by Bill Hubick. (MBP list)

Bull Thistle in Prince George's Co., Maryland (8/21/2017). (c) Michael Ellis, some rights reserved (CC BY). Photo by Michael Ellis via iNaturalist. (MBP list)

Bull Thistle in Howard Co., Maryland (5/15/2018). (c) hcc8, some rights reserved (CC BY-NC). Photo by hcc8 via iNaturalist. (MBP list)

Bull Thistle in Frederick Co., Maryland (11/4/2017). (c) kblacketter, some rights reserved (CC BY-NC). Photo by kblacketter via iNaturalist. (MBP list)

Bull Thistle in Frederick Co., Maryland (7/24/2016). (c) botanygirl, some rights reserved (CC BY). Photo by botanygirl via iNaturalist. (MBP list)

Bull Thistle in Anne Arundel Co., Maryland (3/21/2015). (c) jenngribben, some rights reserved (CC BY-NC). Photo by jenngribben via iNaturalist. (MBP list)

Bull Thistle in Montgomery Co., Maryland (7/31/2018). (c) cheerwine, some rights reserved (CC BY-NC). Photo by cheerwine via iNaturalist. (MBP list)

Bull Thistle in Dorchester Co., Maryland (9/1/2017). (c) Wayne Longbottom, some rights reserved (CC BY-NC). Photo by Wayne Longbottom. (MBP list)

Bull Thistle in Montgomery Co., Maryland (6/28/2019). (c) belyykit, some rights reserved (CC BY-NC). Photo by belyykit via iNaturalist. (MBP list)

Bull Thistle in Montgomery Co., Maryland (Date obscured). (c) Ryan, some rights reserved (CC BY-NC). Photo by Ryan Douglas. (MBP list)

Bull Thistle in Garrett Co., Maryland (5/1/2019). (c) jlsherrard0, some rights reserved (CC BY-NC). Photo by jlsherrard0 via iNaturalist. (MBP list)

Bull Thistle in Montgomery Co., Maryland (12/26/2020). (c) Emily Summerbell, some rights reserved (CC BY-NC). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)

Bull Thistle in Montgomery Co., Maryland (12/26/2020). (c) Emily Summerbell, some rights reserved (CC BY-NC). Photo by Emily Summerbell, Ph.D. via iNaturalist. (MBP list)


View All Images

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

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/.