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.

Goldstrike

Active

Taxus baccata L. · European yew

Firma Lucassen Boomkwekerij V.O.F.

1 record

Hans Lola

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Klaus Olbricht

1 record

Golden Wave

Withdrawn

Chasmanthe floribunda (Salisb.) N. E. Br.

NEW BULBS

1 record

Feelia

Terminated

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

Peter Herzog

1 record

Hachblau

Active

Ilex x meserveae S. Y. Hu · Meserve holly

Holger Hachmann

1 record

H217905

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

Giraffe

Terminated

Lilium L. · Lily

Hoffgaarde B.V.

1 record

Evevic

Withdrawn

Rosa L. · Rose

Les Roses Anciennes André Eve S.A.S.

1 record

Everbrite

Withdrawn

Carex oshimensis Nakai · Oshima sedge

Beotanics Ltd.

1 record

Evening Glow

Terminated

Echinacea Moench. · Coneflower

TAKII EUROPE B V

1 record

GEE2022

Application submitted

Sempervivum L. · Houseleek

Christopher M Hansen

1 record

GENBEL

Terminated

Lonicera japonica Thunb. · Japanese honeysuckle

Peter M. Dealtrey, Deirdre S. Dealtrey

1 record

Goudklokje

Withdrawn

Narcissus bulbocodium L. · Hoop petticoat daffodil

Maveridge International B.V.

1 record

Gala Rossa

Active

Malus domestica (Suckow) Borkh. · Apple

THOMPSON G.W.

3 records

Delsaumparf

Active

Rosa L. · Rose

Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.

1 record

Golden Carol

Terminated

Taxus baccata L. · European yew

Hendrikus M.C. Kouwenberg

1 record

Delice Roselilac

Active

Salvia xjamensis J. Crompton · Jame sage

Jan De Busschere

1 record

Delcremorcot

Active

Rosa L. · Rose

Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.

1 record

Elizabeth Killelay

Terminated

Primula L. · Primrose

B. Brown

1 record

Dekdaybreak

Terminated

Chrysanthemum L. · Chrysanthemum

Cornelis W. Dekker

1 record

Forever Young

Application submitted

Thuja occidentalis L. · Northern white-cedar

Frank Schnupper

1 record

Elsie

Withdrawn

Hylotelephium spectabile (Boreau) H. Ohba · Ice plant

Robert Bett

1 record

Florvendula Purple

Terminated

Lavandula stoechas L. · French lavender

HAMER BLOEMZADEN B.V.

1 record

DELTIR

Active

Ribes rubrum L. · Redcurrant

Pepinieres et Roseraies Georges Delbard| FR

1 record

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.