Variety traits

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

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

The frost hardiness of the Shasta daisy is rated for USDA zones 5–9 or the RHS H5 category. A critical factor for successful overwintering is preventing crown rot by ensuring high-quality drainage.

In the reference 10 varieties crop Shasta daisy, where this is mentioned in the description.

For Leucanthemum x superbum, frost hardiness is characterized by adaptation to USDA zones 5–9, with some cultivars capable of tolerating zone 4 conditions. Within the British RHS classification, the plant is rated H5, which implies resistance to temperatures ranging from -10°C to -15°C.

A key condition for successful wintering is not only the temperature regime but also soil conditions, as stagnant moisture around the root crown during the winter period can lead to rot. In regions with severe winters, mulching the root zone is practiced to stabilize temperature levels.

When grown in containers, requirements for frost protection increase due to the rapid freezing of the root system. It should also be noted that for subsequent flowering, the plant requires a mandatory vernalization period at low temperatures.

General information about the subject — on the page Frost 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.