field sow thistle

(Sonchus arvensis)

               
Overview

Field sow thistle, also called perennial sowthistle, is a very common exotic weed. It is native to Europe and Asia. It was introduced and naturalized into North America. It is now common across the northern half of the United States and also occurs in the southwest. It is mostly absent from the southeast and south-central regions. It is very common in Minnesota. It is found in urban areas, on stream banks and roadsides, and in disturbed areas.

field sow thistle

  Photo by Alfredo Colon
Identification

Field sow thistle is a tall plant with showy yellow flowers. Stems and leaves exude a milky sap when broken or torn. Lower leaves are deeply divided into more or less triangular lobes. Upper leaves are often shallowly lobed or unlobed. The leaf margins are toothed and prickly. The inflorescence is an array of up to 20 flower heads. Flower heads are yellow and large, up to 1¾ in diameter when fully open.

Vegetatively, field sow thistle look much like Canada lettuce, but that plant has much smaller, less showy flowers. Other sow thistles also have smaller flowers. There are two subspecies of field sow thistle. Both are present in Minnesota. Sonchus arvensis ssp. arvensis is very common, S. a. ssp. arvensis is uncommon.

 
Distribution Distribution Map   Sources: 2, 3, 4, 5, 7, 22, 24, 28.
 
Comments

 

 
Taxonomy

Family:

Asteraceae (aster)

 

Subfamily:

Cichorioideae

 

Tribe:

Cichorieae

 

Subtribe:

Hyoseridinae

Subordinate Taxa

field sow thistle (Sonchus arvensis ssp. arvensis)

field sow thistle (Sonchus arvensis ssp. uliginosus)

 
Synonyms

 

 
Common
Names

creeping sowthistle

field sow thistle

field sow-thistle

field sowthistle

 

perennial sowthistle

perennial sow-thistle

sowthistle

 

 

 

 

 

 

 

 

 

       
Visitor Photos
   
Share your photo of this plant.
 

This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Attach one or more photos and, if you like, a caption.

       
Alfredo Colon
       
  field sow thistle   field sow thistle
       
       
MinnesotaSeasons.com Photos
   

Field sow thistle (Sonchus arvensis ssp. uliginosus)

       
  field sow thistle    
       

Subspecies Undetermined

       

Plant

  field sow thistle    
       

Flower

  field sow thistle   field sow thistle
       

Leaves

  field sow thistle   field sow thistle
       
       

 

Camera

     
Slideshows
   
  Sonchus arvensis
Susanne Wiik
 
  Sonchus arvensis  
 
About

Åkerdylle, Corn Sow Thistle

 
     
  Sonchus arvensis FIELD SOW THISTLE
Frank Mayfield
 
  Sonchus arvensis FIELD SOW THISTLE  

 

slideshow

       
Visitor Videos
       
Share your video of this plant.
   

This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Attach one or more videos or YouTube links and, if you like, a caption.

       
       
Other Videos
 
  Corn Sow Thistle (Sonchus Arvensis) / Dindle - 2012-07-06
W3stlander
 
   
 
About

Published on Jul 12, 2012

Sonchus arvensis (Corn Sow Thistle, Dindle, Field Sow Thistle, Gutweed, Swine Thistle, Tree Sow Thistle, Field Sowthistle, Field Milk Thistle) is a medicinal plant.

------------------
De akkermelkdistel (Sonchus arvensis) is een plant uit de composietenfamilie (Asteraceae).

   
       
  Environmental Laboratory - U.S. Army Corps of Engineers
EnvLabERDC
 
   
 
About

Published on Feb 15, 2013

Sonchus arvensis - Field Sowthistle

   
       
  Weed Of The Week #600-Perennial Sow Thistle (From Ag PhD #600 10/4/09)
AgPhD
 
   
 
About

Uploaded on Oct 8, 2009

If you thought we'd run out of thistles to talk about, your wrong. Here's this week's Weed of the Week, Perennial Sow Thistle.

   
       

 

Camcorder

         
Visitor Sightings
   
Report a sighting of this plant.
 
This button not working for you?
Simply email us at info@MinnesotaSeasons.com.
Be sure to include a location.

Alfredo Colon
8/2 and 8/4/2019

Location: Woodbury, Minnesota

field sow thistle


     
     
 
MinnesotaSeasons.com Sightings
         

Agassiz Dunes SNA

Antelope Valley SNA

Baker Park Reserve

Belgium Prairie

Big Stone Lake State Park

Blanket Flower Prairie SNA

Buffalo River State Park

Butterwort Cliffs SNA

Cedar Mountain SNA

Cedar Rock SNA

Charles A. Lindbergh State Park

Clinton Prairie SNA

Cottonwood River Prairie SNA

Des Moines River SNA

Elm Creek Park Reserve

Falls Creek SNA

Felton Prairie SNA, Bicentennial Unit

Felton Prairie SNA, Shrike Unit

Flandrau State Park

Foxhome Prairie

French Regional Park

Glacial Lakes State Park

Glendalough State Park

Glynn Prairie SNA

Hole-in-the-Mountain Prairie

Kettledrummer Prairie

Langhei Prairie SNA

Leif Mountain

Malmberg Prairie SNA

Margherita Preserve-Audubon Prairie

Minnesota Valley NWR, Louisville Swamp Unit

Mound Spring Prairie SNA, North Unit

Myhr Creek Ridge SNA

Northern Tallgrass Prairie NWR, Hoffman Unit

Northern Tallgrass Prairie NWR, Pavia Unit

Northern Tallgrass Prairie NWR, Spieker Unit

Northern Tallgrass Prairie NWR, Touch the Sky Prairie Unit

Old Mill State Park

Ordway Prairie

Oronoco Prairie SNA

Otter Tail Prairie SNA

Pembina Trail Preserve SNA, Crookston Prairie Unit

Plover Prairie, East Unit

Prairie Coteau SNA

Prairie Creek WMA, Koester Prairie Unit

Prairie Smoke Dunes SNA

Red Rock Prairie

Regal Meadow

Richard M. & Mathilde Rice Elliott SNA

Rock Ridge Prairie SNA

Sandpiper Prairie SNA

Santee Prairie SNA

Savage Fen SNA

Scenic State Park

Schaefer Prairie

Sibley State Park

Spring Prairie Preserve

Thorson Prairie WMA

Town Hall Prairie

Twin Valley Prairie Addition

Twin Valley Prairie SNA

Twin Valley WMA

Tympanuchus Prairie

Vermillion River WMA

Wild River State Park

Woodbury WMA

Yellow Bank Hills SNA

 

 

Binoculars


Last Updated:

About Us | Privacy Policy | Contact Us | © 2020 MinnesotaSeasons.com. All rights reserved.