A hybrid citrus tree created by crossing a sweet orange with a trifoliate orange, valued for rootstock and disease resistance.
From cit- (citrus) + range, an abbreviated combining form. Created in the early 1900s at the USDA Citrus Station by American horticulturists seeking disease-resistant varieties.
Citrange trees were an agricultural breakthrough—they're hybrids that resist diseases killing regular orange trees, showing how plant breeding could save entire industries. Thousands of modern orange trees grow on citrange rootstocks without most people knowing it.
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