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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.

HIL PAS EDEN

Terminated

Passiflora insignis x Passiflora mixta

BRADBURY MARK

1 record

IB 005-6

Application submitted

Anisodontea capensis (L.) D. M. Bates

Plant Growers Australia Pty Ltd

1 record

Hyfatis08

Application submitted

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

Hyfryd Plants

1 record

Kim Wall

Terminated

Rosa L. · Rose

Per Eskelund Mortensen

1 record

HUIBLUSH

Active

Exochorda racemosa (Lindl.) Rehder

Huisman Boomkwekerij B.V.

1 record

Geisha

Terminated

Rhododendron molle (Blume) G. Don · Chinese azalea

MATTHEW MILLER

1 record

Kerphyvory

Terminated

Phygelius x rectus Coombs

Priscilla Grace Kerley, David William Kerley, Timothy Edward Kerley

1 record

Hilbeanaom

Withdrawn

Dianthus L. · Carnation

HilverdaKooij B.V

1 record

KERBELCREAM

Active

Primula vulgaris Huds. · Primrose

David William Kerley, Priscilla Grace Kerley

1 record

Healthy Mammoth Three

Active

Sequoiadendron giganteum (Lindl.) J. Buchholz

Cornelius P.F. Kools trading as Sierteeltkwekerij Kools

1 record

JWW9

Active

Corylus avellana L. · Common hazel

Jan-Willem Wezelenburg Boskoop B.V.

2 records

Golden Dream

Terminated

Coreopsis L. · Tickseed

Yohei Hosogai

1 record

Kiescaliblu

Terminated

Scabiosa japonica Miq.

Kieft Bloemzaden B.V.

1 record

JS Dancing In The Rain

Active

Cenchrus orientalis (Rich.) Morrone · Oriental pennisetum

Spruyt Select CommV

1 record

Hokuspokus

Withdrawn

Leucothoe fontanesiana (Steud.) Sleumer · Dog-hobble

Frank Schnupper

1 record

HOCH1099

Active

Lagerstroemia indica L. · Crape myrtle

Hochberg Export Ornamental Plants Ltd.

1 record

HO 0120

Active

Gaultheria procumbens L.x Gaultheria shallon Pursh

Hans-Peter Holz

1 record

JS Delgado

Active

Bistorta amplexicaulis (D. Don) Greene · Red bistort

Spruyt Select CommV

1 record

JS Chique

Active

Euphorbia corollata L.

Spruyt Select CommV

1 record

Hardy

Withdrawn

Hedera helix L. subsp. hibernica (G. Kirchn.) D. C. McClint. · Atlantic ivy

FRANK LUND HOLDING APS

1 record

Hara-Rasp

Application submitted

Rubus crataegifolius Bunge

Toshihiko Hara

1 record

JW1

Application submitted

Spiraea japonica L. f. · Japanese meadowsweet

Josephus A.E. Willemsen

1 record

Juliette

Active

Miscanthus sinensis Andersson · Chinese silver grass

Marc-Henri Doyon

1 record

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