| The Plant Quarantine Act (1912) is a national law restricting importation of all kinds of plants.
It allows imported plants to be distributed only after a waiting period and careful inspection for pathogens (harmful diseases) and insect pests. It was passed as a direct consequence of chestnut blight.
At the right is a photo of a blight-infected tree. Notice the yellowish-orange discoloration of the bark.
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