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.

Rwoods8

Application submitted

Hibiscus syriacus L. · Rose of Sharon

Roderick I. Woods

1 record

Rencolor

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Jean Renault

1 record

RUTTENBU2016

Active

Buddleja davidii Franch. · Butterfly bush

Pierre Rutten

1 record

Shanghai

Terminated

Chrysanthemum L. · Chrysanthemum

Andreas Niederländer

1 record

Regalia Chocolate

Active

Pelargonium grandiflorum (Andrews) Willd. · Regal pelargonium

FLORANOVA LTD

1 record

Red Tips

Withdrawn

Ilex aquifolium L. · Common holly

JOH. SPEK BOOMKWEKERIJEN B.V.

1 record

Redstone Falls

Active

x Heucherella H. R. Wehrh. · Foamy bells

Janet N. Egger

1 record

Serena

Withdrawn

Rubus idaeus L. · Red raspberry

Luca Mattivi

1 record

Rubys Love

Active

Rhododendron obtusum (Lindl.) Planch. · Hirado azalea

Paul Wensing

1 record

RS-PND

Application submitted

Prunus cerasifera Ehrh. · Cherry plum

Reinhard Schomberg Klee

1 record

Red Angel

Terminated

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Frauke Engel

1 record

Secret Love

Terminated

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

HARINI KORLIPARA

1 record

Romy

Terminated

Gladiolus L. · Gladiolus

Coöperatieve Kwekersvereniging "For Ever" U.A.

1 record

Rosemary Foster

Active

Hydrangea aspera Buch.-Ham. ex D. Don · Rough-leaved hydrangea

Maurice C. Foster

1 record

Rondo

Withdrawn

Chaenomeles japonica (Thunb.) Lindl. ex Spach · Japanese quince

Kimmo Rumpunen^^^Darius Kviklys^^^Silvija Ruisa

1 record

Queen of Warsaw

Active

Rosa L. · Rose

Zamek Królewski w Warszawie - Muzeum. Rezydencja Królów i Rzeczypospolitej^^^Łukasz Rojewski Father's Times

1 record

Poulhi002

Terminated

Rosa L. · Rose

Poulsen Roser A/S

1 record

Poulcs001

Terminated

Rosa L. · Rose

Poulsen Roser A/S

1 record

Rhododendron

Application submitted

Rhododendron catawbiense Michx. · catawba rhododendron

TYAS VERBRUGGE

1 record

Rosy Yoigloo

Terminated

Chrysanthemum L. · Chrysanthemum

Mark A. Smith

1 record

Rembrandt

Terminated

Hyacinthus orientalis L. · Common hyacinth

JOHANNES FERDINANDUS MARIA HOGERVORST

1 record

Polar Bear

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Arie Jacobus Bregman

1 record

PMOORE31

Application submitted

Escallonia Mutis ex L. f. · Escallonia

Peter R. Moore

1 record

Red Pulse

Terminated

Zantedeschia Spreng. · Arum-lily

Sande 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.