Variety traits

Frost resistance of Berberis thunbergii

Berberis thunbergii DC.

Berberis thunbergii belongs to USDA hardiness zone 4, which implies resistance to temperatures ranging from -29 °C to -34 °C. The crop possesses a high capacity for shoot regeneration even in the event of partial frost damage during severe winter conditions.

In the reference 14 varieties crop Japanese barberry, where this is mentioned in the description.

The frost resistance of this species is determined by its ability to withstand temperatures in the range from -28 °C to -42 °C. Under typical climatic conditions of USDA zone 4, mature plants do not require special covering; however, during extremely low temperatures or snowless winters, frost damage to non-lignified parts of the shoots is possible.

Certain cultivars, such as 'Red Chief', possess lower winter hardiness, which manifests as regular frost damage, but the crop recovers quickly following spring sanitary pruning. To improve adaptability during the dormancy period and prevent winter desiccation of tissues, it is recommended to conduct autumn deep-water irrigation.

General information about the subject — on the page Frost hardiness.

Sources8

Varieties of Japanese barberry 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.