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.

Nippon

Active

Lilium L. · Lily

Voort, Cees A. Van Der|Katwijk, Netherlands

BE DE FR NL PL

8 records

Alba

Active

Petroselinum crispum (Mill.) Nyman ex A. W. Hill · Parsley

Yirzhi Horal, Yana Mohel`s`ka, Petr Klapshte,

CZ HU LT SK UA

9 records

Ronja

Active

Lolium perenne L. · Perennial ryegrass

Weibull, Peder

DE PL SE

14 records

Malwina

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Stoppel Peter

NL PL

16 records

Intertrogol

Active

Rosa L. · Rose

Interplant Roses B.V

DE NL

8 records

enrosadira

Active

Rubus idaeus L. · Red raspberry

Vivai Molari e Gatti, I

NL UA

16 records

Phoenix one

Active

Paulownia elongata S. Y. Hu x Paulownia fortunei (Seem.) Hemsl.

WeGrow GmbH

12 records

Lake Carey

Active

Lilium L. · Lily

Pieter Cornelis Schenk, Bischoff Tulleken Lelies B.V.

8 records

Flatbeauti

Active

Prunus persica (L.) Batsch · Peach

Maillard Arsene / Maillard Laurence

11 records

Supalight

Active

Argyranthemum frutescens (L.) Sch. Bip. · Marguerite daisy

McDonald, Daniel Bede, Seven Hills NSW 2147

8 records

Auscrowd

Active

Rosa L. · Rose

DAVID JC AUSTIN

8 records

Nordika

Active

Triticum aestivum L. · Bread wheat

TOMAS NOVACEK

EE LT UA

10 records

Ernestina

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

BE ES FR IT LT

7 records

PR39B76

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

AT IT RO SI UA

10 records

Pontiform

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH & Co. KG, STRUBE D and S GMBH

EE LT PL UA

9 records

Drifter

Active

Triticum aestivum L. · Bread wheat

TAYLOR MIKE

AT BE NL

12 records

Tango

Active

Allium porrum L. · Leek

Moravoseed Spol. S.r.o

CZ DK PL SK

7 records

Opal

Active

Prunus domestica L. · European plum

Statens Tradgardsforksoks Instituten, SW

CZ FR NL PL

15 records

Meisoyris

Active

Rosa L. · Rose

Meilland, Alain A.|Antibes, France

DE DK FR IT

7 records

J. H. Hale

Active

Prunus persica (L.) Batsch · Peach

FR NL SI SK

12 records

Victoria

Active

Medicago sativa L. · Alfalfa

Semillas Fito, E

EE ES

9 records

Festival

Active

Gypsophila L. · Baby's breath

Michael Danziger

DE DK NL

7 records

Barblanca

Active

Trifolium repens L. · White clover

GRASSLANDS RESEARCH CENTRE

FR IE

11 records

Poulgrad

Active

Rosa L. · Rose

Poulsen Roser A/S

7 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.