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Variety traits

Winter hardiness

Winter hardiness is a complex indicator of a variety's ability to remain viable throughout the winter and early spring periods, including resistance to frost and other environmental stress factors.

Mentioned in descriptions 27 261 varieties reference book.

Winter hardiness is a complex plant characteristic that includes resistance to freezing, smothering, waterlogging, frost heaving, and winter desiccation. Unlike frost resistance, which is limited to tolerance of low temperatures, winter hardiness takes into account the entire spectrum of adverse effects that lead to plant death or damage during the cold period.

The winter hardiness of a variety is evaluated using methods of field assessment of crop conditions after winter, employing scoring scales, as well as laboratory studies. The latter include direct freezing of plant monoliths, biochemical analyses of sugar accumulation, verification of the viability of the tillering node, and the use of genetic markers to determine resistance.

The level of winter hardiness depends on the genetic potential of the variety, the plant's ability to harden, agronomic cultivation practices, and the microclimate characteristics of a specific site. When choosing a variety, one should focus on regionalized forms, bearing in mind that the resistance indicator is relative and requires comparison with local standards and growing conditions.

Sources10

Breakdown by crop

Winter Hardiness of Roses 555 Winter hardiness of common wheat 220 Winter hardiness of apple trees 188 Winter Hardiness — Hydrangea macrophylla 187 Pear Winter Hardiness 123 Winter hardiness — perennial ryegrass 120 Winter Hardiness of Lily 91 Winter hardiness of winter rapeseed 81 Peach winter hardiness 71 Plum Winter Hardiness 65 Winter Hardiness of Clematis 61 Grapevine Winter Hardiness 56 Winter hardiness of winter barley 56 Winter hardiness — garden strawberry 52 Winter hardiness of sweet cherry 48 Tulip winter hardiness 42 Heuchera winter hardiness 40 Winter Hardiness of Alfalfa 39 Chrysanthemum winter hardiness 39 Winter hardiness of triticale 36 Winter Hardiness of Apple 36 Winter hardiness of Hydrangea serrata 36 Grapevine Winter Hardiness 35 Winter hardiness of apricot 35

Found in these crops

Rose 1 062 Apple 843 Bread wheat 657 Lily 410 European pear 348 Bigleaf hydrangea 315 Peach 264 Rapeseed 258 European plum 245 Grapevine 229 Perennial ryegrass 224 Sweet cherry 223

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Zeba

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

Tonus

Active

Secale cereale x secale montanum

Jouffray Drillaud S.A.

2 records

YAPRUBY

Active

Penstemon Schmidel. · Beard Tongue

Frederic C. Yates

2 records

Valencia

Active

Zantedeschia Spreng. · Arum-lily

Sande B.V.

2 records

Yaka Dance

Active

Miscanthus sinensis Andersson · Chinese silver grass

Johannes Nicolaas Mesker

2 records

Wedding Gown

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Toyokazu Ichie

2 records

Zoexci

Active

Clematis L. · Clematis

J.VAN ZOEST BEHEER B.V.

2 records

URITW02

Active

Coreopsis L. · Tickseed

Kong Young Park

2 records

ZO09088

Active

Clematis L. · Clematis

J.VAN ZOEST BEHEER B.V.

2 records

WALMAUVRUF

Active

Rhododendron L. · Azalea

Walberton Plants LTD

2 records

W1813

Active

Delosperma nubigenum (Schltr.) L. Bolus · Hardy yellow ice plant

NISHIKAWA KOICHIRO

2 records

Yeti

Withdrawn

Vicia faba L. · Broad bean

Olaf Sass^^^Martin Frauen

2 records

TURK8

Active

Agapanthus L'Hér. · Lily of the Nile

Ernest Turc S.A.S.

2 records

TUILAD

Active

Physocarpus opulifolius (L.) Maxim. · Ninebark

Jonathan J. Tuite

2 records

White Brush

Active

Lilium L. · Lily

Testcentrum voor Siergewassen B.V.

2 records

Verweig 3

Active

Weigela florida (Bunge) A. DC. · Old fashioned weigela

Gijsbertus Verhoef

2 records

Verscerise

Active

Astilbe Buch.-Ham. ex D. Don · False goat's beard

A. VERSCHOOR HORTICULTURE IMPORT-EXPORT B.V

2 records

WW Warren

Active

Acer rubrum L. · Red maple

Warren Keith S.

2 records

WP18 MOW09

Active

Dianthus caryophyllus L. · Carnation

Whetman Plants International Limited

2 records

WP15 PIE44

Active

Dianthus x allwoodii hort. · Allwood pink

Plant Genetics International Ltd.

2 records

Venezia

Active

Gladiolus L. · Gladiolus

Testcentrum voor Siergewassen B.V.

2 records

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