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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.

FLORGAUWH2

Active

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

Florensis B.V.

1 record

JS Misty Morning

Active

Bistorta amplexicaulis (D. Don) Greene · Red bistort

Spruyt Select CommV

1 record

Healthy Mammoth One

Active

Sequoiadendron giganteum (Lindl.) J. Buchholz

Cornelius P.F. Kools trading as Sierteeltkwekerij Kools

1 record

Isaura

Withdrawn

Chrysanthemum L. · Chrysanthemum

Johan David

1 record

Green Diamond

Active

Ligustrum ovalifolium Hassk.

Josa Selecties B.V.

1 record

Interlolru

Terminated

Rosa L. · Rose

Interplant Roses B.V

1 record

INNEMLCO15

Withdrawn

Nemesia Vent. · Nemesia

Silvia Hofmann

1 record

INHELPUNRO

Active

Heliopsis Pers. · North American Ox-eye

Silvia Hofmann

1 record

H220915

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

1 record

Independance

Withdrawn

Hosta sieboldiana (Hook.) Engl. · Siebold's plantain lily

Vitro Westland B.V.

1 record

Golden Candy

Terminated

Iberis sempervirens L. · Evergreen candytuft

SEAR RON

1 record

IPB126516

Active

Rosa L. · Rose

Interplant Roses B.V

1 record

Extravert

Withdrawn

Gladiolus L. · Gladiolus

For Ever Bulbs B.V.

1 record

IFHESB

Withdrawn

Heuchera L. · Coral Flower

INNOFLORA PLANT BREEDING B.V.

1 record

GRLN01

Active

Lonicera nitida Wils. · Boxleaf honeysuckle

Guido Rouwette

1 record

IFHESILB

Active

Heuchera L. · Coral Flower

INNOFLORA PLANT BREEDING B.V.

1 record

IFECSSRA

Active

Echinacea Moench. · Coneflower

Jelle van den Haak

1 record

Flamingo

Terminated

Hybrids between Echinacea purpurea (L.) Moench and Echinacea paradoxa (Norton) Britton

HARINI KORLIPARA

1 record

IFAGCB

Withdrawn

Agapanthus africanus (L.) Hoffmanns. · African lily

INNOFLORA PLANT BREEDING B.V.

1 record

IFALLS

Active

Allium senescens L. subsp. montanum (Pohl) Janch. ex Soó

Wietse Mellema

1 record

Granretip

Terminated

Gaillardia aristata Pursh · Blanketflower

Syngenta Seeds B.V.

1 record

Hyfatis

Application submitted

Clematis montana Buch.-Ham. ex DC. · Anemone clematis

Hyfryd Plants

2 records

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