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.

Ragnar

Active

Trifolium pratense L. · Red clover

SELGEN A.S

4 records

Rampart

Active

Brassica napus L. · Rapeseed

Limagrain UK

3 records

Pollyanna

Protection expired

Lilium L. · Lily

McRae, Edward A|Boring, OR

2 records

Précoce de Louviers

Active

Brassica oleracea L. (White Cabbage Group) · White cabbage

Domaine Public (FR)

2 records

Prisma

Terminated

Brassica rapa L. · Turnip rape

Christer Persson 50%, Saima Kalev 50%

2 records

Poulskab

Terminated

Rosa L. · Rose

Poulsen Roser A/S

2 records

Poulvam

Terminated

Rosa L. · Rose

Poulsen Roser A/S

2 records

Pinilla

Active

Lactuca sativa L. · Lettuce

RAMIRO ARNEDO, S.A.

2 records

Polinka

Active

Prunus domestica L. · European plum

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

4 records

PEQUEÑA DE CASAS IBAÑEZ

Active

Olea europaea L. · Olive

3 records

Pamela

Active

Prunus persica (L.) Batsch · Peach

PSB produccion vegetal S.L. (ES)

4 records

Pfarrgarten

Active

Spinacia oleracea L. · Spinach

Unbekannt, Keine Angabe

2 records

Orkan

Active

Rubus L. subg. Rubus · Blackberry

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

4 records

Perestroyka

Protection expired

Tulipa L. · Tulip

LEVENSLUST B.V.

2 records

Parrot Inzell

Withdrawn

Tulipa L. · Tulip

SCHILDER J.P.W.

2 records

OTRADNAYa

Active

Hippophae rhamnoides L. · Sea buckthorn

TROFIMOV TIT TROFIMOVICh

2 records

Otlichnik

Active

Prunus persica (L.) Batsch · Peach

PERFIL'EVA ZOYa NIKOLAEVNA / SMYKOV ANATOLIJ VLADIMIROVICh / SMYKOV VLADIMIR KARPOVICh / FEDOROVA OL'GA STEPANOVNA

4 records

Olga

Active

Corylus avellana L. · Common hazel

Tomasz Borkowski

4 records

Nidiformis

Active

Picea abies (L.) H. Karst. · Norway spruce

Vorobiova Olena Anatoliivna

2 records

Neva

Active

Populus L. · Poplar

LAPIETRA GIANFRANCO

2 records

Noir long maraîcher

Active

Raphanus sativus L. var. niger (Mill.) S. Kerner · Black radish

Domaine Public (FR)

2 records

Nectarcrisp

Active

Prunus persica (L.) Batsch · Peach

Arsene Maillard Laurence Maillard

3 records

Moro SG

Active

Citrus sinensis (L.) Osbeck · Sweet orange

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

MINROUG01

Terminated

Dasiphora fruticosa (L.) Rydb. subsp. fruticosa · Shrubby cinquefoil

HORTIVAL DIFFUSION SAS (FR)

2 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.