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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.

SMNPPS

Active

Dasiphora fruticosa (L.) Rydb. subsp. fruticosa · Shrubby cinquefoil

Wood Timothy D

2 records

Tinyblack

Active

Rubus L. subg. Rubus · Blackberry

TROCIN Dumitru, MD

2 records

Tiny Athlete

Active

Lilium L. · Lily

Mak Nicolaas Aloysius Maria|'t Zand, NL

2 records

TAN07291

Active

Rosa L. · Rose

CHRISTIAN EVERS

2 records

STAM01

Active

Stokesia laevis (Hill) Greene · Stokes' aster

Seoha Plant Breeding Institute

2 records

Stolwijk Gold

Active

Clematis L. · Clematis

Stolwijk Hans|Reeuwijk, NL

2 records

Staccato

Active

Prunus avium (L.) L. · Sweet cherry

His Majesty the King in Right of Canada as represented by the Minister of Agriculture and Agri-Food

2 records

Stellar Ruby

Application submitted

Magnolia figo (Lour.) DC. · Banana-shrub

Thomas Patrick McCracken

2 records

Spebegro

Application submitted

Rosa L. · Rose

Jan Spek Rozen B.V.

2 records

Spotty Dotty

Application submitted

Podophyllum L.

Janet N. Egger

2 records

Spider Alley

Active

Betula pendula Roth · Silver birch

Matt Lohan

2 records

Sensation Pink

Active

Echinacea angustifolia x Echinacea purpurea

Marco van Noort Breeding B.V.

2 records

Star of Royals

Active

Astrantia major L. · Masterwort

Jacobus R. de Jong

2 records

Spegain

Application submitted

Rosa L. · Rose

Spek Rose Breeding International B.V.

3 records

Somnip

Protection expired

Rosa L. · Rose

SOMERFIELD ROBIN BRUCE

2 records

Sunny Seduction

Active

Achillea millefolium L. · Yarrow

Sahin-Georgiadou Elisabeth|Alphen aan den Rijn, NL

2 records

Sunderland

Active

Lilium L. · Lily

Van Zanten Flowerbulbs B.V

2 records

Spek 02

Active

Ilex aquifolium L. · Common holly

Spek Pieter

2 records

Solar Flare

Application submitted

Bergenia Moench · Elephant ear

Noort Marco Van|Warmond, NL

2 records

Speadfair

Active

Rosa L. · Rose

Boomkwekerij Ad Vurens

2 records

Summer Cocktail

Active

Echinacea Moench. · Coneflower

Marco van Noort Vaste Planten V.O.F.

2 records

Silver Charm

Active

Brunnera macrophylla (Adams) I. M. Johnst. · Siberian bugloss

Zuikevich Alexander

2 records

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