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.

LC NO3

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Schoemaker Alex Frederick

5 records

NCHA3

Active

Hydrangea arborescens L. · Smooth hydrangea

Thomas G. Ranney, Kultaran Chohan

5 records

MACANE001

Active

Anemone L. · Anemone

MacGregor Elizabeth / MacGregor Alasdair John

4 records

Korglojaka

Active

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

4 records

Mahogany

Active

Heuchera L. · Coral Flower

Janet N. Egger

4 records

LPDC Podaras

Active

Diervilla sessilifolia Buckley · bush-honeysuckle

Podaras Peter|Ithaca, NY, US / Pellett Harold M.|Minnetrista, MN, US

5 records

Intertrococh

Terminated

Rosa L. · Rose

Interplant Roses B.V

4 records

Kolmakilima

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Kolster Peter Rudolf

4 records

KLEDH13033

Active

Dahlia Cav. · Dahlia

Wagener Silke

5 records

Homigo

Active

Hydrangea L. · Hydrangea

Jacobus Gerardus Hofstede|Wilhelmus Jacobus Gerardus Hofstede

4 records

Korgohowa

Active

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

4 records

Hendryetta

Active

Clematis L. · Clematis

Win Snoeijer

4 records

Green Jewel

Active

Echinacea purpurea (L.) Moench · Purple coneflower

Petrus Hendricus Oudolf

5 records

Intereybabsap

Active

Rosa L. · Rose

Interplant Roses B.V

4 records

FYNLSPRE

Active

Leucospermum R. Br. · Pincushion

Future Fynbos Pty. Ltd.

4 records

Evipo006

Active

Clematis L. · Clematis

Poulsen Roser AS, DK - 3480 Fredensborg

4 records

Ginger Peach

Active

Heuchera L. · Coral Flower

Pavlich John C.

4 records

Electra

Active

Heuchera L. · Coral Flower

Janet N. Egger

4 records

Fat Domino

Active

Bistorta amplexicaulis (D. Don) Greene · Red bistort

Ghyselen, Chris

4 records

Fastrada

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

4 records

Glorie Dwarf

Active

Ilex crenata Thunb. · Japanese holly

Baumschulen Gebruder Barth GbR / Baumschulen Gebrüder Barth GbR

5 records

Gizmo

Active

Lilium L. · Lily

Vletter en den Haan Beheer B.V.

6 records

Evipo045

Active

Clematis x cartmanii

Poulsen Roser A/S^^^Raymond J. Evison Ltd.

4 records

Devon Xera

Active

Dianthus L. · Carnation

Whetman Pinks

4 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.