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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.

Inov86

Active

Lonicera L. · Honeysuckle

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Saphinov S.N.C.

2 records

IFECSSSWFU

Active

Echinacea Moench. · Coneflower

Spil Glenn

2 records

Hyfjolais

Active

Sambucus nigra L. · Elderberry

Jones John,Jones Maria

2 records

Hyde Park

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

Inerypolav

Active

Erysimum L. · Wallflower

Silvia Hofmann

2 records

HQOPR010

Active

Hydrangea quercifolia W. Bartram · Oakleaf hydrangea

Plant Select N.V.

2 records

Happy Flames

Active

Heuchera L. · Coral Flower

Scheys Diederik Alexander Maria

2 records

HP217902

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hydrangea Breeders Association B.V.

2 records

Happy Day

Active

Astilbe x arendsii H. Junge · Arends astilbe

Verduin Harrie

2 records

Heins Silver

Active

Euonymus fortunei (Turcz.) Hand.-Mazz. · Wintercreeper

Boomkwekerij Sneijers B.V.

2 records

KLELV16119

Active

Lavandula angustifolia Mill. · English lavender

Ruijun Li

2 records

Kingsville

Active

Lilium L. · Lily

Van Zanten Flowerbulbs B.V

2 records

KLEDG20339

Active

Dianthus caryophyllus L. · Carnation

Thiede Lena

2 records

GRDARK01

Active

Physocarpus opulifolius (L.) Maxim. · Ninebark

Rouwette Guido

2 records

Hanky Panky

Active

Hosta Tratt. · Hosta

Shady Oaks Nursery LLC

2 records

Hobergine

Active

Hydrangea L. · Hydrangea

Jacobus Gerardus Hofstede|Wilhelmus Jacobus Gerardus Hofstede

2 records

Keepsake

Active

Vaccinium corymbosum L. · Highbush blueberry

James F. Hancock^^^Edmund J. Wheeler

2 records

KBK01

Active

Clematis L. · Clematis

KJELL BOLINDER

2 records

Hachpico

Active

Rhododendron L. · Azalea

H. Hachmann Baumschule

2 records

Katia

Active

Erica x darleyensis Bean · Darley heath

Henri Brégeon

2 records

Hilnotre

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

2 records

Kindly

Active

Helleborus niger L. · Christmas rose

Johannes Teunis Verboom

2 records

Hulsdonk White

Active

Tamarix tetrandra Pall. ex M. Bieb.

CEES VAN OSTAAYEN

2 records

KKHO1

Active

Callistemon viminalis (Sol. ex Gaertn.) G. Don · Weeping bottlebrush

JOHAN LEON SCHOLTZ

2 records

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