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Sowthistle, Perennial

Sowthistle

Sowthistle

Sonochus arvensis glabrescens

Synonyms

Corn Sow-thistle, Creeping Sow Thistle, Dindle, Field Milk Thistle, Field Sow Thistle, Gutweed, Milk Thistle, Sonchus uliginosus, Tree Sow-thistle

ID Characteristics

Life cycle: Perennial
Growth Habit: Erect plant growing in clumps
Propagation:  Seeds and rhizomes
Leaf Margin: Wavy or lobed
Leaf Hairs: Prickly and dentate; stems are hairless
Leaf Structure:  Entire to  oak-leaf shaped with two to five lobes.
Leaf Arrangement: Basal rosette of alternate leaves.  Plant parts contain a milky sap.
Root Type: Rhizomes that spread by extensive horizontal roots
Flower Color: Composite flowers yellow to yellow-orange

Multimedia

Similar Species

  • Dandelion Taraxacum officinale
  • LettucePrickly  Lactuca serriola
  • Sowthistle, Annual Sonchus oleraceus
  • Sowthistle, Prickly or Spiny Sonchus asper

Herbicidal Control Options

  • Preemergence: Selective control option not available
  • Post Emergence: Mesotrione, 2,4-D,  Dicamba,  MCPP,  Triclopyr, Clopyralid, Carfentrazone

 

Please note: one or more of these active ingredients may exist in combination-type brand name products. Any material used for herbicidal control of any plant may vary in efficacy. Please read the full disclaimer on herbicide usage.