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Hyacinth Plant

Q.Is Johnson grass poisonous to cattle?

Zone Northern Tablelands nNSW | anne.vosper added on April 4, 2015 | Answered

Got some seed from for my canaries and thought about planting some in my garden but I don’t want it to spread to the paddocks if it is poisonous to cattle.

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Answered on April 4, 2015

Johnson grass can be toxic to our livestock, but only under certain conditions. It produces a toxin, prussic acid, when it is under stress (such as drought, freezing weather). More information can be found here:


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