Alsike Clover

Latin Name: Trifolium hybridum

Identifying Characteristics:

  • Taproot
  • Palmately compound trifoliolate leaves
  • Smooth leaflets
  • Serrated leaflet edges
  • No watermark on leaflet
  • Prominent upright stipules
  • Pinkish white flowers
  • Head inflorescence

Plant Longevity:

  • Perennial

Where Commonly Found:

  • Moist areas
  • Poorly drained soils

Time of Most Concern:

  • Spring through fall

Compound that Causes Concern:

  • Not known

Part of Plant Most Toxic:

  • All green vegetation

Livestock Species Affected:

  • Swine (photosensitization)
  • Sheep (photosensitization)
  • Horses (photosensitization, suspected liver disease)
  • Cattle (photosensitization)

Pasture, Stored Feed, Both:

  • Both

Clinical Signs:

  • Two clinical syndromes have been recognized: photosensitization and liver disease. Debate exists about whether alsike clover is the true/only feed component needed to induce liver disease in horses.
  • Photosensitization (sunburn)
  • Liver disease
    • Drooling
    • Diarrhea
    • Loss of appetite
    • Jaundice

Amount Needed to be Consumed for Clinical Signs / Death:

  • Unknown

Identifying Characteristics:

  • Taproot
  • Palmately compound trifoliolate leaves
  • Smooth leaflets
  • Serrated leaflet edges
  • No watermark on leaflet
  • Prominent upright stipules
  • Pinkish white flowers
  • Head inflorescence

Plant Longevity:

  • Perennial

Where Commonly Found:

  • Moist areas
  • Poorly drained soils

Time of Most Concern:

  • Spring through fall

Compound that Causes Concern:

  • Not known

Part of Plant Most Toxic:

  • All green vegetation

Livestock Species Affected:

  • Swine (photosensitization)
  • Sheep (photosensitization)
  • Horses (photosensitization, suspected liver disease)
  • Cattle (photosensitization)

Pasture, Stored Feed, Both:

  • Both

Clinical Signs:

  • Two clinical syndromes have been recognized: photosensitization and liver disease. Debate exists about whether alsike clover is the true/only feed component needed to induce liver disease in horses.
  • Photosensitization (sunburn)
  • Liver disease
    • Drooling
    • Diarrhea
    • Loss of appetite
    • Jaundice

Amount Needed to be Consumed for Clinical Signs / Death:

  • Unknown