How Cold Can Roses Tolerate?
Roses can tolerate light frost, but prolonged cold below -10°C (14°F) can cause cane dieback and root damage, especially in tender varieties. Cold hardiness depends on duration of cold, soil freezing, wind exposure, and whether roses entered dormancy gradually. Canadian-bred roses are among the most cold-tolerant, surviving temperatures as low as -30°C (-22°F) once established. […]









