cyanogenic glycosides
Flower Color:
  • flower color
fields, ornamental, gardens, pastures

Time of Greatest Risk


Geographical Distribution

Apricot distribution - United States

Related Species


Prunus armeniaca

Armenian Plum, Abricotier, Apricotier, Ansu Apricot, Siberian Apricot, Tibetan Apricot
8/ 10
The apricot tree (Prunus armeniaca ) is a small well-known tree that is grown worldwide for cultivation of its fleshy, stone fruits--the apricot. P. armeniaca develops pink to white colored blossoms in the spring, prior to leaves appearing. The fruits ripen towards the end of July to mid-August.
Apricot toxic components horses

Apricot Toxic Components

Apricot tree parts contain two main cyanogenic glycosides, prunasin in the vegetative organs (leaves, flowers, roots, bark, twigs) and amygdalin exclusively in seeds or pits. Apricot trees usually only contain small amounts of these compounds, so unless horses consume an excessive amount of the plant parts, cyanide poisoning is highly unlikely. However, young, rapidly growing leaf tissue and seeds tend to contain increased amounts of cyanogenic glycosides. Toxicity levels also increase during periods of frost, drought, application of 2,4-D herbicides, nitrate fertilization, low phosphorous soil levels, and cool moist growing conditions. As cyanide release requires hydrolysis in the gastrointestinal tract, features of poisoning may be delayed for a few hours.


  • Rapid Breathing
  • Bright Red Mucous Membranes
  • Convulsions
  • Coma
  • Respiratory Failure
  • Death
  • Hindlimb Incoordination
  • Urinary Incontinence
  • Constipation
  • Weight Loss
  • Low Blood Pressure


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