Cultivation
Calibrachoa Cold Hardiness
Calibrachoa Cerv.
Calibrachoa is a heat-loving perennial for USDA zones 9–11 that lacks genetic resistance to freezing temperatures. Plants die at temperatures between −1 and −3 °C and must be moved to frost-free environments.
In the reference 26 varieties crop Calibrachoa, where this is mentioned in the description.
Breeding programs for Calibrachoa focus on heat tolerance, ornamental traits, and disease resistance, therefore the genus genotype lacks traits for cold hardiness. Under sub-zero temperatures, the plant is incapable of overwintering and rapidly loses viability.
Despite rare mentions of the ability of some varieties to withstand brief, light frosts, the crop is not cold-hardy. To preserve plants in climatic zones with cold winters, it is necessary to maintain a temperature range between +5 and +14 °C.
General information about the subject — on the page Suitability for freezing.
Varieties of Calibrachoa mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
No varieties yet.