Variety traits

Frost resistance — Salvia x sylvestris L.

Salvia x sylvestris L.

The frost resistance of Salvia x sylvestris is rated for USDA zones 4–8, which corresponds to the ability to withstand winter temperatures down to −20...−25 °C. Overwintering success depends directly on soil drainage, as excess moisture in the root collar zone critically reduces the plant's hardine…

In the reference 4 varieties crop Wood sage, where this is mentioned in the description.

For Salvia x sylvestris, the primary indicator of frost resistance is its compatibility with USDA zones 4–8. In temperature equivalents, this means the plant is capable of enduring winter minimums in the range of −20 °C to −25 °C, provided that agronomic conditions are met to protect the root system from freezing and waterlogging.

High winter hardiness is characteristic of adapted plants in zones 4–5; however, these levels may decrease for young seedlings or container-grown specimens due to the lack of soil thermal insulation. The hardiness of the species is limited not only by temperature but also by the risk of rotting, so to prevent plant death, it is essential to ensure effective drainage and soil aeration at the base of the plant.

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

Sources8

Varieties of Wood sage 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.