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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.

WHASTILUC

Active

Rosa L. · Rose

WHARTONS NURSERIES LTD

2 records

VIVISAL

Active

Salvia L. · Sage

Christian Vivies

2 records

Watermelon Taffy

Terminated

Penstemon Schmidel. · Beard Tongue

Robert D. Jansen

2 records

Versred

Active

Hybrid between Astilbe x arendsii and Astilbe japonica

A. VERSCHOOR HORTICULTURE IMPORT-EXPORT B.V

2 records

WALHIFLAR

Active

Hybrids between Hibiscus paramutabilis and Hibiscus syriacus

Walberton Plants LTD

2 records

Walcheren Winter 5

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Limagrain UK

2 records

WALSNOWRUF

Active

Rhododendron L. · Azalea

Walberton Plants LTD

2 records

WALPINRUF

Active

Rhododendron L. · Azalea

Walberton Plants LTD

2 records

VERSTRA

Active

Prunus laurocerasus L. · Cherry laurel

Adrian Straver

3 records

YAPMINE

Active

Penstemon Schmidel. · Beard Tongue

Frederic C. Yates

2 records

Versent

Active

Chamaecyparis thyoides (L.) Britton et al. · Atlantic white cedar

Schrauwen Jean-Pierre

2 records

TVP3

Active

Weigela Thunb. · Bush Honeysuckle

Bert Verhoef Boomkwekerij V.O.F.

2 records

Vercor 5

Active

Cortaderia selloana (Schult. & Schult. f.) Asch. & Graebn. · Pampas grass

Gijsbertus Verhoef

2 records

TURCAL209

Active

Alstroemeria L. · Alstroemeria

Vele Mathieu

2 records

Zanloremp

Active

Lilium L. · Lily

Van Zanten Flowerbulbs B.V

2 records

VEL11TRPOA

Active

Rosa L. · Rose

Boomkwekerijen Louis Lens N.V.

2 records

WP18 ZOR01

Active

Dianthus L. · Carnation

Whetman Plants International Limited

2 records

Vega

Terminated

Chrysanthemum L. · Chrysanthemum

Valleflor S.L.

2 records

With Love

Terminated

Lavandula stoechas L. · French lavender

Plant Growers Australia Pty Ltd

2 records

Trailblazer

Active

Prunus domestica L. · European plum

Smith, Mildred M

2 records

Yogigi

Active

Chrysanthemum L. · Chrysanthemum

PETER WAIN

2 records

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