Variety traits

Winter Hardiness of Leucanthemum x superbum (Bergmans ex J. W. Ingram) D. H. Kent

Leucanthemum x superbum (Bergmans ex J. W. Ingram) D. H. Kent

The winter hardiness of the Shasta daisy is determined by its ability to withstand temperatures from –29 °C to –34 °C, which corresponds to USDA hardiness zones 4–9. A critical survival factor is soil drainage, which prevents waterlogging during the winter period.

In the reference 6 varieties crop Shasta daisy, where this is mentioned in the description.

For Leucanthemum x superbum, winter hardiness is evaluated according to the USDA zone system, where hardy varieties withstand conditions of zone 4, equivalent to temperatures around –34 °C. The RHS rating system classifies the species as H5, which implies endurance during cold winters provided that high-quality drainage is ensured.

The agrotechnical winter hardiness of the crop depends directly on moisture conditions: water stagnation in the root zone leads to plant death. In regions with harsh climates, double-flowered and large-flowered varieties require dry coverage with a layer of foliage after the soil has frozen, protecting the roots from sharp temperature fluctuations.

The longevity of the crop is linked to rejuvenating the clump through division every three years, as the dieback of the central part of older plants reduces their winter resilience. When growing in containers, it is important to maintain a dormancy period without exposure to high temperatures and low light levels.

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

Sources8

Varieties of Shasta daisy 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.