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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.

Wesarwhi

Active

Argyranthemum frutescens (L.) Sch. Bip. · Marguerite daisy

Westhoff Heinrich|Sudlohn, DE

2 records

Valdosta

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

Whiteberry

Active

Hybrid between Astilbe x arendsii and Astilbe japonica

A. VERSCHOOR HORTICULTURE IMPORT-EXPORT B.V

2 records

TNLEUBL

Active

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

HARINI KORLIPARA

2 records

White Abundance

Active

Clematis L. · Clematis

ANTHONY ROBIN WHITE|SUSAN BARBARA WHITE

2 records

TNHEUNES

Active

Heuchera L. · Coral Flower

Janet N. Egger

2 records

ViruTherm-2

Active

Pyrus communis L. · European pear

Petruschke Michael

3 records

TAN04603

Active

Rosa L. · Rose

CHRISTIAN EVERS

2 records

Titanic

Active

Hosta Tratt. · Hosta

Hansen Hans A

2 records

Titania

Active

Ribes L. · Currants

Tamas Pal

3 records

Tisento

Active

Lilium L. · Lily

Van Zanten Flowerbulbs B.V

2 records

Uptown Girl

Active

Phlox paniculata L. · Garden phlox

Hansen Hans A

2 records

YBRAZO01

Active

Prunus lusitanica L. · Portugal Laurel

Yves Brenelière

3 records

Tinkerbelle

Active

Magnolia x soulangeana Soul.-Bod. · Saucer magnolia

Vance Hooper

2 records

Tiki Sensation

Active

Anemone hupehensis (Lemoine) Lemoine var. japonica (Thunb.) Bowles & Stearn · Japanese anemone

Nordic Flower Breeding S.M.B.A.

2 records

Thundercloud

Active

Sedum L. · Ice Plant

Horvath Brent|Fontana, WI, US

2 records

Wolros

Withdrawn

Rosmarinus officinalis L. · Rosemary

WOLTERS CHRISTINE

2 records

Syast Draip

Active

Symphyotrichum novi-belgii (L.) G. L. Nesom · New York aster

Mark A. Smith

2 records

Thetis

Active

Caryopteris x clandonensis A. Simmonds ex anon. · Clandon bluebeard

Bernd Steinegger

2 records

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