Yellow Starthistle
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Yellow Starthistle
Names: Centaurea solstitalis, russian knapweed, barnaby’s thistle
Description: Annual weed that can grow up to three feet. Flowers are yellow, purple and white and round and surrounded by stiff spines. Stems are covered in gray hairs.
Concern level: Only during drought conditions, unpalatable, can be incorporated into hay.
Toxic parts: Unknown
Symptoms: Grinning appearance, open mouth, protruding tongue, yawning, depression of central nervous system, lack of appetite, difficulty breathing, death due to not eating and drinking.
Danger: Unknown toxic component causes “chewing disease”. Neural damage is permanent, can be fatal from dehydration and malnutrition.
More information: USACE
Poisonous plants by letter
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Looking for a plant but don't know the name? Try the toxic plant identifier
This information is for reference only, if you think your horse has eaten something toxic, call your vet right away.
