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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.

JS Delgado Macho

Active

Bistorta amplexicaulis (D. Don) Greene · Red bistort

Spruyt Select CommV

2 records

JS Aha Erlebnis

Active

Molinia arundinacea x Molinia caerulea

Spruyt Select CommV

2 records

Korelzura

Active

Rosa L. · Rose

Wilhelm-Alexander Kordes, Tim-Hermann Kordes, John-Vincent Kordes

2 records

HG 1418

Active

hybrids between Helleborus x ericsmithii B. Mathew and Helleborus x hybridus hort. ex Voss

Josef Heuger

2 records

JONADE

Active

Sambucus x strumpfii Gutte.

JOHN JONES

2 records

Korcatemp

Active

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

2 records

Kolsens

Protection expired

Rosa L. · Rose

GEBR. KOLSTER B.V.

2 records

Koncamystic

Active

Alstroemeria L. · Alstroemeria

Konst Johannes Wilhelmus Maria

3 records

Jelly Bells

Active

Campanula xpulloides hort.

Korlipara Harini|Canby, OR, US

2 records

Jeflady

Active

hybrids between Syringa meyeri C. K. Schneid. and Syringa pubescens Turcz.

Wilbert Ronald^^^Rick Durand

2 records

Kolmarest

Active

Hypericum x inodorum Mill. · Tall tutsan

Floribreed V.O.F.

2 records

Kolmanita

Active

Eryngium planum L. · Blue eryngo

Kolster Holding B.V.

2 records

Kolmagopri

Active

Rosa L. · Rose

KOLSTER RIJNEVELD

2 records

Kolmagimpre

Active

Hypericum x inodorum Mill. · Tall tutsan

Floribreed V.O.F.

2 records

Kojubella

Active

Syringa meyeri C. K. Schneid. · Meyer lilac

Helmut Pirc

2 records

Interzabunel

Terminated

Rosa L. · Rose

Interplant Roses B.V

2 records

Jachim

Active

Prunus x gondouinii (Poit. & Turpin) Rehder · Duke cherry

Mirko Schuster

3 records

ISINW

Active

Hybrieds between Acer palmatum and Acer pseudosieboldianum

Early Morning LLC dba Iseli Nursery

2 records

Infinity

Active

x Heucherella H. R. Wehrh. · Foamy bells

Joke Dragt

2 records

Hollasic

Active

Dryopteris wallichiana (Spreng.) Hyl.

Hollister Robert Anthony / Hollister Gillian

2 records

KLEDG18274

Active

Dianthus x allwoodii hort. · Allwood pink

Nils Klemm^^^Lena Thiede

2 records

Harnext

Active

Rosa L. · Rose

HARKNESS NEW ROSES LTD

3 records

Hilmooawak

Active

Echinacea purpurea (L.) Moench · Purple coneflower

TAKII EUROPE B V

2 records

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