Variety traits

Frost hardiness

Frost hardiness is the genetically determined ability of a plant to withstand exposure to sub-zero temperatures without tissue damage. This indicator reflects the critical temperature threshold beyond which the plant dies.

Mentioned in descriptions 11 978 varieties reference book.

Frost hardiness represents the ability of a plant organism to resist the impact of low sub-zero temperatures. It determines the critical threshold above which plant tissues undergo irreversible damage or death. Unlike overall winter hardiness, which also accounts for damping-off and the effects of thaws, frost hardiness focuses specifically on the cellular response to cold exposure.

This trait is genetically determined; however, its expression depends on the physiological state of the plant and the dynamics of external conditions. Frost hardiness is not a constant value: it increases during the period of deep winter dormancy and gradually decreases towards spring, as the plant loses its ability to resist cold due to dehardening.

The evaluation of frost hardiness during variety testing is conducted through laboratory freezing in controlled conditions or through long-term field observations of crop survival. For variety comparison, scoring scales, percentage of survival, or the determination of minimum permissible temperatures in degrees Celsius are used. Maximum realization of the innate genetic potential for frost hardiness is ensured by optimal sowing dates and adequate phosphorus-potassium fertilization in the autumn.

Sources10

Breakdown by crop

Frost resistance of roses 263 Frost Resistance — Hydrangea macrophylla 162 Grapevine Cold Hardiness 152 Lily Frost Hardiness 106 Apple Frost Resistance 84 Grapevine Cold Hardiness 78 Clematis Frost Resistance 71 Tulip frost resistance 64 Peach frost hardiness 52 Frost resistance — soft wheat 44 Frost Hardiness of Rhododendron 36 Frost resistance of Heuchera 36 Frost resistance of common heather 30 Frost Hardiness of Zantedeschia 29 Pear frost resistance 24 Frost Hardiness of Sweet Cherry 24 Apple Frost Resistance 24 Gladiolus frost resistance 24 Cold hardiness of fig 24 Chrysanthemum Frost Resistance 21 Plum Frost Resistance 19 Apricot frost resistance 19 Frost resistance — garden strawberry 19 Blueberry frost resistance 18

Found in these crops

Grapevine 301 Rose 193 Lily 150 Common grape vine 142 Apple 119 Tulip 112 Bigleaf hydrangea 82 Clematis 66 Peach 63 Bread wheat 56 Azalea 44 Highbush blueberry 42

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.

Mara Seedless

Active

Vitis vinifera L. · Common grape vine

Maranto Joseph|Bakersfield, CA, US

5 records

Kolmaru

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Peter Rudolf Kolster

5 records

Lilac Chip

Active

Buddleja L. · Buddleia

Werner Dennis J. / Snelling Layne K.

6 records

KORtrameilo

Active

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

5 records

Hoogi023

Active

Thuja occidentalis L. · Northern white-cedar

Mark Sebastiaan Hoogenraad

7 records

Gracia

Active

Lilium L. · Lily

Vletter en den Haan Beheer B.V.

7 records

Genie

Active

Magnolia x soulangeana Soul.-Bod. x Magnolia liliiflora Desr.

Vance Hooper

5 records

Eva

Active

Sambucus nigra L. · Elderberry

Tobutt Kenneth Richard|Meopham, GB

5 records

Bonfire

Active

Begonia boliviensis A. DC. · Bolivian begonia

RJ Cross, NZ Institute for Crop & Food Rsch Ltd

5 records

Blondie

Active

Heuchera L. · Coral Flower

Janet N. Egger

6 records

Kondrat

Active

Hordeum vulgare L. · Barley

Herasymova Anastasiia Ivanivna, Suprunenko Viktoriia Mykolaivna, Levshtanov Serhii Oleksandrovych, Ostanina Tamara Vitaliivna, Sukhorada Oleksii Ivanovych, Kremzina Ol`ha Mykhailivna, Vasiukov Pavlo Petrovych, Kuznietsova Tamara IEvheniivna, Serkin Mykola

7 records

Tananilov

Active

Rosa L. · Rose

ROSEN TANTAU MATH TANTAU NACHFOLGER

BE DE FR

4 records

Tantaluma

Protection expired

Rosa L. · Rose

Rosen-Tantau Mathias Tantau Nachfolger

DE NL PL

5 records

Tanschaubud

Protection expired

Rosa L. · Rose

TANTAU NACH| Rosen Tantau Mathias Tantau Nachfolger

DE FR NL

4 records

President drouard

Active

Pyrus communis L. · European pear

ES FR SI

8 records

Renora

Active

Malus domestica (Suckow) Borkh. · Apple

Prof. Dr. Manfred Fischer / Heinz Murawski + im Institut für Obstforschung Dresden-Pillnitz / Prof. Dr. Christa Fischer

DE HU UA

10 records

Melanie

Active

Calluna vulgaris (L.) Hull · Common heather

Kurt Kramer (Heidezüchtung)

DE NL PL

4 records

Herbert

Active

Vaccinium corymbosum L. · Highbush blueberry

Szkola Glowna Gospodarstwa Wiejskiego

NL PL SI

4 records

Delcorf

Active

Malus domestica (Suckow) Borkh. · Apple

Pepinieres et Roseraies Georges Delbard| FR

FR HU NL

11 records

Czar

Active

Prunus domestica L. · European plum

RIVERS (GB)

FR NL SI

7 records

Dark Beauty

Protection expired

Calluna vulgaris (L.) Hull · Common heather

MAASEN FRANZ EN CANDERS GERD

BE DE NL

4 records

Tanettahn

Terminated

Rosa L. · Rose

HANS JUGEN EVERS

DE NL

4 records

Rupestris du Lot

Active

Vitis L. · Grapevine

INCONNU (FR)

FR HU

4 records

Reine Claude d' Oullins

Active

Prunus domestica L. · European plum

FR NL

6 records

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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.