In North America, Allium schoenoprasum is native to both Canada and the United States.
Allium schoenoprasum is found throughout Canada’s provinces and territories, with the exception of Prince Edward Island and Nunavut.
Allium schoenoprasum originates in twenty-seven continental states of the United States: Alaska, Colorado, Connecticut, Idaho, Illinois, Maryland, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New Jersey, Nevada, New York, Ohio, Oregon, Pennsylvania, Rhode Island, Utah, Virginia, Vermont, Washington, Wisconsin, and Wyoming.
In four states Allium schoenoprasum natively occurs in one county: Jackson County in northern Colorado, Essex County in northeastern Massachusetts, Boone County in central Missouri, and Nye County in southern Nevada.
U.S.D.A. Plant Hardiness Zone Map: zones 5 to 10
The U.S. Department of Agriculture (U.S.D.A.) Plant Hardiness Zone Map, which zones plants according to the coldest temperature at which they remain viable, Allium schoenoprasum fits Zone 5 (-20° to -10°Fahrenheit; -29° to -23°Celsius) through Zone 10 (30° to 40°F; -1° to 4°C).