Variety traits

Winter Hardiness of Skimmia japonica Thunb.

Skimmia japonica Thunb.

The winter hardiness of Skimmia japonica is classified under USDA hardiness zones 6–9 and an RHS rating of H5, which corresponds to the ability to withstand temperatures from −18 °C to −23 °C.

In the reference 5 varieties crop Japanese skimmia, where this is mentioned in the description.

The crop is an evergreen plant with moderate winter hardiness. In open field conditions, the tolerance limit varies between −18 °C and −23 °C, which necessitates the selection of wind-protected sites. Varieties with an H5 rating are characterized by the ability to endure temperature drops in temperate climates, provided that proper agricultural practices are followed.

The shallow root system requires mulching with a 10–15 cm layer of organic matter to prevent freezing. The plant's winter hardiness is closely linked to maintaining water balance: applying dormant irrigation before the onset of frost minimizes the risk of physiological desiccation of the shrub's tissues in winter. When container-grown, winter hardiness is significantly reduced due to the rapid freezing of the root ball, which requires additional measures to protect the root system.

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

Sources8

Varieties of Japanese skimmia 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.