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.

Neon Kiss

Terminated

Rhododendron L. · Azalea

Jan Ciepłucha

1 record

Pixie Miracle Grace

Terminated

Phlox paniculata L. · Garden phlox

MART VESTER BEHEER B.V.

1 record

Piccolino

Terminated

Echinacea Moench. · Coneflower

Marco van Noort Vaste Planten V.O.F.

1 record

PEARLIPP

Terminated

Eryngium planum L. · Blue eryngo

Kwekerij Terra Nova V.O.F.

1 record

Podaras 11

Terminated

Hybrids between Buddleja alternifolia Maxim. and Buddleja davidii Franch.

Cornell University

1 record

Playa

Terminated

Dahlia Cav. · Dahlia

Green Works International B.V.

1 record

Plateau

Withdrawn

Camellia japonica L. · Japanese camellia

Yuan Gao

1 record

P1

Active

Philadelphus coronarius L. · Sweet mock orange

Alan Postill

1 record

Overdam Blue

Active

Sesleria heufleriana Schur

Poul Petersen

1 record

Opstal101

Withdrawn

Abelia x grandiflora Rehder · Glossy abelia

Ron van Opstal Holding B.V.

1 record

Okura Red

Terminated

Chrysanthemum L. · Chrysanthemum

PARATY B.V.B.A

1 record

Okura

Terminated

Tulipa L. · Tulip

Testcentrum voor Siergewassen B.V.

1 record

PAS1213797

Terminated

Lavandula angustifolia Mill. · English lavender

Martijn Baijens

1 record

Olympus

Active

Phlox paniculata L. · Garden phlox

Geerlings-Meyer

1 record

Novcargol

Terminated

Caryopteris x clandonensis A. Simmonds ex anon. · Clandon bluebeard

MICHAEL S DOBRES

1 record

Morning Bright

Terminated

Miscanthus sinensis Andersson · Chinese silver grass

Michael Merz

1 record

Petit Henri

Withdrawn

Silene flos-cuculi (L.) Greuter & Burdet · Meadow Campion

Olivier Beginn

1 record

Petit Cabernet

Active

Vitis vinifera L. · Common grape vine

Simone Diego Castellarin^^^Guido Cipriani^^^Michele Morgante^^^Enrico Peterlunger^^^Raffaele Testolin^^^Gabriele Di Gaspero

1 record

Orenga

Active

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

2 records

Novapenblu

Terminated

Penstemon barbatus (Cav.) Roth · Beardlip penstemon

Michael S. Dobres^^^Sloane M. Scheiber

1 record

Petrovaca Crna

Active

Ficus carica L. · Common fig

2 records

Mon Blanc

Active

Helleborus niger L. · Christmas rose

Kwekerij Het Wilgenbroek B.V.B.A.

1 record

Molfetta

Terminated

Chrysanthemum L. · Chrysanthemum

Pieters Plant Production B.V.B.A.

1 record

OPSTAL303

Withdrawn

Abelia x grandiflora Rehder · Glossy abelia

Ron van Opstal Holding B.V.

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.