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.

RIE 02

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Ryoji Irie

6 records

Violetta

Active

Ficus carica L. · Common fig

Plattner Anton

8 records

Sauvignon kretos

Active

Vitis vinifera L. · Common grape vine

Vivai Cooperativi Rauscedo, I

6 records

Hokomathyst

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Peter Rudolf Kolster

6 records

Gabrio

Active

Triticum aestivum L. · Bread wheat

Syngenta Seeds, F

9 records

8S5505

Active

Malus domestica (Suckow) Borkh. · Apple

HM the King in Right of Canada a.r.b the Minister of Agriculture and Agri-Food

7 records

White Spire

Active

Euonymus japonicus Thunb. · Japanese spindle

Wouters Theo

6 records

Twilight

Active

Nandina domestica Thunb. · Heavenly bamboo

Neil Mar다

8 records

Taiga

Active

Clematis L. · Clematis

Udagawa Masatake

6 records

Meizuleros

Active

Rosa L. · Rose

Meilland International S.A.

6 records

Obsidian

Active

Heuchera L. · Coral Flower

TERRA NOVA NURSERIES INC

6 records

KORjupvio

Active

Rosa L. · Rose

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

6 records

Lesotho

Active

Lilium L. · Lily

Vletter en den Haan Beheer B.V.

8 records

Lankveld03

Active

Euonymus japonicus Thunb. · Japanese spindle

van Lankveld Tuinplanten Holding B.V.

6 records

Hpopr013

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Plant Select N.V.

6 records

Jewel of Night

Active

Zantedeschia Spreng. · Arum-lily

Sande B.V.

6 records

Ontario

Protection expired

Brassica napus L. · Rapeseed

NICKERSON INTERNATIONAL RESEARCH SNC

BG LT RO UA

6 records

Korhassi

Protection expired

Rosa L. · Rose

W.KORDES' SOEHNE ROSENSCHULEN GMBH & CO KG

DE DK NL PL

5 records

Glen Moy

Active

Rubus idaeus L. · Red raspberry

Scottish Crop Research Institute, GB

DK FR NL SE

12 records

Calypso

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

SIMPSON| Dr. D.W. Simpson

DE FR NL PL

11 records

Tyfon

Active

Brassica rapa L. var. rapa (L.) Thell. · Turnip

Syngenta Seeds B.V.

DK NL SK

9 records

Target

Terminated

Brassica napus var. napus · Rapeseed

DEUTSCHE SAATVEREDELUNG AG

DE DK PL

8 records

Tanallepa

Protection expired

Rosa L. · Rose

Rosen Tantau KG

DE FR NL

5 records

Partner

Active

Triticum aestivum L. · Bread wheat

SECOBRA RECHERCHES S.A.S

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.