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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.

Highgrove

Withdrawn

Rosa L. · Rose

Heather Mary Horner

1 record

Jonny

Terminated

Fargesia murielae (Gamble) T.P.Yi · Umbrella bamboo

Helmerich Helmers

1 record

Jocelyne

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Fraisi Plants S.A.R.L.

2 records

Korelpusch

Active

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

1 record

JFS KW249

Active

Acer truncatum Bunge · Shantung maple

Keith S Warren

1 record

Kolmarrho

Active

Symphoricarpos x doorenbosii Krüssm. · Coralberry

Floribreed V.O.F.

1 record

Kolmkis

Terminated

Hypericum x inodorum Mill. · Tall tutsan

Floribreed V.O.F.

1 record

Kolmali

Terminated

Hypericum x inodorum Mill. · Tall tutsan

Floribreed V.O.F.

1 record

Kolmarucas

Application submitted

Symphoricarpos x doorenbosii Krüssm. · Coralberry

Floribreed V.O.F.

1 record

Kolmaloir

Application submitted

Salvia xjamensis J. Crompton · Jame sage

Kolster Holding B.V.

1 record

Kolmacon

Application submitted

Salvia xjamensis J. Crompton · Jame sage

Kolster Holding B.V.

1 record

Jam Roly Poly

Application submitted

Geum x jankae Beck

Gerardus A.P. Lommerse

1 record

HORE140103

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Lendert De Vos

1 record

HARRUBY

Terminated

Oenothera lindheimeri (Engelm. & A. Gray) W. L. Wagner & Hoch · Lindheimer's beeblossom

Hardy's Cottage Garden Plants

1 record

Intercomtiw

Terminated

Rosa L. · Rose

Interplant Roses B.V

1 record

HARLINONE

Terminated

Linaria purpurea (L.) Mill. · purple toadflax

Hardy's Cottage Garden Plants

1 record

Interbadti

Terminated

Rosa L. · Rose

Interplant Roses B.V

1 record

INHELSOGIA

Active

Heliopsis helianthoides (L.) Sweet · Oxeye sunflower

Silvia Hofmann

1 record

King Summer

Application submitted

Lagerstroemia indica L. · Crape myrtle

Lagerstroemia S.A.R.L.

1 record

Kimono

Active

x Heucherella H. R. Wehrh. · Foamy bells

TERRA NOVA NURSERIES INC

1 record

Hedpink

Withdrawn

Cyclamen hederifolium Aiton · Ivy-leaf cyclamen

Syngenta Seeds B.V.

1 record

KLEDG24478

Application submitted

Dianthus caryophyllus L. · Carnation

Judith Rupp

1 record

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