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.

Pinova

Active

Malus domestica (Suckow) Borkh. · Apple

Sächsisches Landesamt für Umwelt Landwirtschaft und Geologie

BE CZ DE FR HU NL +2

29 records

Nirpventyel

Active

Rosa L. · Rose

Luciano Ghione

FI FR NL PL

15 records

Korpinka

Active

Rosa L. · Rose

Wilhelm Kordes / Tim-Hermann Kordes / Margarita Kordes in Fa. W. Kordes' Söhne Rosenschulen GmbH & Co KG

BE DE DK FR HU NL +2

13 records

Meirecrom

Active

Rosa L. · Rose

Meilland Star Rose S.A.

14 records

Meineble

Active

Rosa L. · Rose

SNC Meilland et Cie

BE DE DK ES FR IT +1

12 records

Camarosa

Active

Fragaria L. · Strawberry

Voth, Victor|Santa Ana, CA / Shaw, Douglas V.|Davis, CA / Bringhurst, Royce S.|Davis, CA

BG HU IT

13 records

Rotax

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH & Co. KG, D- 38387 Sollingen

DK EE LT LV PL SE +1

13 records

Poulavon

Terminated

Rosa L. · Rose

Poulsen Roser AS, DK - 3480 Fredensborg

DE DK FI NL PL SE

11 records

auschris

Active

Rosa L. · Rose

DAVID JC AUSTIN

12 records

Leguan

Active

Triticum aestivum L. · Bread wheat

SELGEN A.S

AT DK ES HU PL SI +2

13 records

Tanmeda

Active

Rosa L. · Rose

Rosen Tantau KG

BE DE DK FR IT NL +1

10 records

Poulman

Protection expired

Rosa L. · Rose

Poulsen Roser Aps (DK)

BE DE DK ES FR PL +1

11 records

Angelia

Active

Phacelia tanacetifolia Benth. · Lacy phacelia

PETERSEN| Asmus Soeren Petersen in Fa. P.H. Petersen Saatzucht Lundsgaard GmbH & Co KG

AT CZ DE DK HU PL +1

15 records

Meimodac

Active

Rosa L. · Rose

Meilland, Alain A.|Antibes, France

DE DK FR IT NL PL

10 records

Elsanta

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

PLANT RESEARCH| Plant Research International B.V.

DE ES FR HU NL PL

19 records

Bluecrop

Active

Vaccinium corymbosum L. · Highbush blueberry

Szkola Glowna Gospodarstwa Wiejskiego

HU NL PL SI UA

16 records

Acapulco

Active

Lilium L. · Lily

Vletter, Floris|Rijnsburg, Netherlands

BE DE FR NL PL

10 records

Top Shelf

Active

Vaccinium corymbosum L. · Highbush blueberry

Wagner L. Adam, Brazelton M. David

NL UA

15 records

WILLIAM'S

Active

Pyrus communis L. · European pear

ES FR NL RO

14 records

Columbia Giant

Active

Rubus L. subg. Rubus · Blackberry

Finn Chad E

10 records

AUSlevity

Active

Rosa L. · Rose

DAVID JC AUSTIN

11 records

Tanarasah

Protection expired

Rosa L. · Rose

Rosen-Tantau Mathias Tantau Nachfolger

AT BE DE DK FR NL +1

8 records

Polka

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Szkółka Markiewicz Agnieszka Markiewicz-Januszewska

DE FR HU NL PL UA

15 records

SW Magnifik

Active

Triticum aestivum L. · Bread wheat

Lantmaennen ek foer

EE FI LT LV SE

12 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.