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.

Janed Gold

Active

Thuja occidentalis L. · Northern white-cedar

Kubik, Edward

5 records

Icicle

Active

Pisum sativum L. · Pea

ProGene Plant Research LLC

6 records

Hokomac

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Peter Rudolf Kolster

5 records

Hardtop

Active

Festuca ovina L. · Sheep's fescue

BARENBRUG HOLLAND

6 records

Garda

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Walther Faedi^^^Lorenzo Ballini^^^Giorgio Baroni^^^Gianluca Baruzzi^^^Pierluigi Lucchi^^^Paolo Sbrighi^^^Matteo Birolli

7 records

Farely

Active

Prunus armeniaca L. · Apricot

Marie-France Bois

8 records

Flatpretty

Active

Prunus persica (L.) Batsch · Peach

Maillard Laurence|Elne, FR / Maillard Arsene|Elne, FR

6 records

Flavor Gold

Active

Prunus persica (L.) Batsch · Peach

6 records

Fernette

Active

Juglans regia L. · Persian walnut

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

9 records

ES Navigo

Active

Brassica napus var. napus · Rapeseed

LIDEA FRANCE SAS

6 records

Ercolano

Active

Lilium L. · Lily

Vletter en den Haan Beheer B.V.

5 records

Fardao

Active

Prunus armeniaca L. · Apricot

Marie-France Bois

8 records

Farclo

Active

Prunus armeniaca L. · Apricot

Marie-France Bois

9 records

Emiliana

Active

Medicago sativa L. · Alfalfa

ROBERTO GUARNIERI

5 records

Echelon

Active

Dactylis glomerata L. · Cocksfoot

DLF Pickseed USA

5 records

Dulcia

Active

Festuca arundinacea Schreb. · Tall fescue

RAGT SA (FR)

7 records

Envy

Protection expired

Lolium perenne L. · Perennial ryegrass

PURE SEED TESTING

6 records

Diligent

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

5 records

Darkhorse

Active

Poa trivialis L. · Rough bluegrass

DLF Pickseed USA

6 records

Companion

Active

Trifolium repens L. · White clover

Oregro Seeds

6 records

Crisprim

Active

Prunus persica (L.) Batsch · Peach

Laurence Maillard, Arsene Maillard

7 records

Clearwater

Active

Tulipa L. · Tulip

FA. G.&M. BROUWER

5 records

Bulk

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Rein Bulk

5 records

Blushing Bride

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

University of Georgia, Department of Horticulture

5 records

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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.