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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.

Havran

Active

Tulipa L. · Tulip

Vßclavik

NL
1 record

Gracefull

Active

Lilium L. · Lily

Mak Breeding B.V.

NL
1 record

Gold Star

Terminated

Juniperus x pfitzeriana (Späth) P. A. Schmidt · Pfitzer juniper

Bunyn Maksym Viktorovych

UA
1 record

Goldprinz

Active

Rhododendron L. · Azalea

Erbe/Erbengemeinschaft Hans Hachmann

DE
1 record

Garantos

Active

Vitis vinifera L. · Common grape vine

Dr. Norbert Becker im Staatl. Weinbauinstitut

DE
1 record

Globosa

Terminated

Thuja occidentalis L. · Northern white-cedar

Vorobiova Olena Anatoliivna

UA
1 record

GKH 0224

Application submitted

Brassica napus L. · Rapeseed

Balazh Mikloshne, Varha Iozhefne, Nemetkhne Varha Anna, Falushi IAnosh, Falushi IAnoshne,

UA
1 record

Frejus

Active

Tulipa L. · Tulip

Vof Rotteveel Burgerbrug

NL
1 record

Forehand

Active

Lilium L. · Lily

Laan Flora Facilities B.V.

NL
1 record

Feuerschein

Protection expired

Rhododendron L. · Azalea

Erbe/Erbengemeinschaft Hans Hachmann

DE
1 record

Flamingo

Terminated

Rhododendron L. · Azalea

Wilhelm Bruns (+)

DE
1 record

FROUFROU ROSE

Withdrawn

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

SICAMUS (FR)

FR
1 record

Fiolent

Terminated

Vaccinium corymbosum L. · Highbush blueberry

Sokolov Serhii Oleksandrovych, Dmytriiev Volodymyr Ihorovych,

UA
2 records

Frisian Gold

Terminated

Pinus L. · Pine

JEDDELOH| Jan-Dieter zu Jeddeloh (Baumschulen)

DE
1 record

FEDERIKA

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Zenti Franco, Bernardini Danilo,

UA
2 records

Eustis

Application submitted

Citrus L. · Citrus

Swingle Walter Tennyson (US)

FR
1 record

Foreigner

Active

Lilium L. · Lily

Testcentrum voor Siergewassen B.V.

NL
1 record

Eye Catcher

Active

Iris reticulata M. Bieb.

A.N. McMurtrie

NL
1 record

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