May 16, 2011
USDA imposes restrictions on imports of ALHB and CLHB host plants

A USDA import restriction has gone into effect as of May 11th, 2011. The USDA is now regulating the import of all known hosts of Anoplophora glabripennis, Asian longhorn beetle (ALHB) and Anoplophora chinesis, citrus longhorn beetle (CLHB) from all countries, including Canada.

Under this new regulation, regulated (host) plants and plant parts that were not grown soley in the US and/or Canada cannot be exported to the US under a Canadian phytosanitary certificate. CNLA reports that the new regulation does not affect CNCP or CGCP shipments at this time. Plants of Canadian and/or US origin that are eligible for export must be accompanied by an Additional Declaration stating:

The plants for planting in this shipment, including all plant parts (e.g. rootstock, scion, etc.) were solely grown in [the United States and/or Canada] and A. chinensis and/or A. glabripennis are not known to occur in Canada.

USDA has agreed to revise these new requirements for host plants from Canada, and is expecting to make changes to the USDA Nursery Stock Restrictions Manual within a week. The revised Federal Order may take a few more weeks to update.

According to CFIA, the delay in informing nurseries is a result of changes made to the USDA's electronic notification system. Exporting nurseries should direct further questions to their local CFIA Horticultural Specialist.

The list of host plants included in the Federal Order are;

Three new A. glabripennis host genera of plants for planting, Cercidiphyllum spp., Koelreuteria spp. and Sorbus spp. identified as hosts by our domestic eradication program, and

11 new A. chinensis host genera of plants for planting, Catalpa spp., Chaenomeles spp., Cornus spp., Cydonia spp., Liquidambar spp., Parrotia spp., Polygonum spp., Rhododendron spp., Sageretia spp., Toona spp., and Viburnum spp. identified by the National Plant Protection Organization of The Netherlands and recent scientific journal articles.