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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.

ECGPHR19

Active

Panicum virgatum L. · Switchgrass

Paul David Babikow

1 record

Frydisco

Terminated

Rosa L. · Rose

Gareth R. Fryer

1 record

Havana Blue

Active

Geranium wallichianum D. Don ex Sweet · Wallich's geranium

Marco van Noort Vaste Planten V.O.F.

1 record

Helen Froehlich

Active

Vitex pseudonegundo (Hausskn.) Hand.-Mazz.

Kris Jarantoski

1 record

Hokomarore

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Horteve Breeding B.V., Kolster Holding B.V.

1 record

French Flag

Active

Yucca filamentosa L. x Y. rostrata Engelm. ex Trel.

Amélie Jeckert

1 record

Heatwave

Terminated

Agastache cana (Hook.) Wooton & Standl.

Praktijkonderzoek Plant en Omgeving B.V.

1 record

Hille

Terminated

Rhododendron L. · Azalea

JOHANN WIETING

1 record

Happy Autumn

Terminated

Heuchera L. · Coral Flower

Diederik Scheys

1 record

Hargalore

Terminated

Rosa L. · Rose

HARKNESS NEW ROSES LTD

1 record

Flexi Belle

Terminated

Solidago flexicaulis L.

Praktijkonderzoek Plant en Omgeving B.V.

1 record

Emerald Goddess

Withdrawn

Liriope muscari (Decne.) L. H. Bailey · Big blue lilyturf

Ron Love

1 record

Hgc Jesse

Terminated

Helleborus niger L. · Christmas rose

Josef Heuger

1 record

Hagar

Terminated

Prunus laurocerasus L. · Cherry laurel

Miklós Józsa

2 records

Happy Purple

Withdrawn

Heuchera L. · Coral Flower

Diederik Scheys

1 record

Hansalola

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Klaus Olbricht

1 record

Gulliver

Active

Malus x purpurea (A. Barbier) Rehder · purple crab

Pépinières JP Hennebelle E.A.R.L.

2 records

Guido Red

Terminated

Hibiscus L. · Hibiscus

Guido van Herck

1 record

Double Fashion

Terminated

Helleborus niger L. · Christmas rose

Thierry Van Paemel

1 record

Haux Apfel

Active

Malus domestica (Suckow) Borkh. · Apple

2 records

Fiesta Cot

Active

Prunus armeniaca L. · Apricot

Cot International S.A.R.L.

1 record

Goldy

Active

Thuja plicata Donn. ex D. Don · Western red cedar

BOOMKWEKERIJ DRIES LUIJTEN B.V.

1 record

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