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.

Amazing Grace

Active

Lilium L. · Lily

G.A. Verdegaal en Zn. Export B.V.

1 record

Albina

Terminated

Vitis vinifera L. · Common grape vine

Bachynskyi Anatolii Leonidovych

2 records

Anouk

Active

Calluna vulgaris (L.) Hull · Common heather

H. C. Hoekert

1 record

Aladin

Active

Vitis vinifera L. · Common grape vine

PUOGET ROGER

1 record

Albina Plena

Active

Clematis L. · Clematis

Johnson, Magnus

1 record

Anglian Gold

Active

Brassica oleracea L. (Marrowstem Kale Group) · Marrow-stem kale

P.H. Petersen Saatzucht Lundsgaard GmbH Herrn Asmus Sören Petersen / Michaela Schlathölter

2 records

Amos black

Terminated

Ribes nigrum L. · Blackcurrant

TYDEMAN E.M. (GB)

1 record

Acolon

Active

Vitis vinifera L. · Common grape vine

Dr. Helmut Schleip (+) in Staatliche Lehr- und Versuchs- anstalt für Wein- und Obstbau

2 records

Ambrozja TOR

Terminated

Anethum graveolens L. · Dill

TORSEED - Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa S.A.

1 record

Amanda Lee

Terminated

Actinidia Lindl. · Actinidia

Piter Bohdan Chykaliuk

1 record

Adamo

Active

Citrus x limon (L.) Osbeck · Lemon

INCONNU (FR)

1 record

Almino

Application submitted

Malus domestica (Suckow) Borkh. · Apple

Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy

2 records

Aladin

Active

Vitis L. · Grapevine

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

Aleksandruli

Terminated

Vitis vinifera L. · Common grape vine

Rubeniia Revazi Klymentiovych

1 record

Akademik Avidzba

Protection expired

Vitis vinifera L. · Common grape vine

Pavlova Iryna Oleksandrivna, Oleinikov Mykola Petrovych, Lykhovs`koi Volodymyr Volodymyrovych, Volynkin Volodymyr Oleksandrovych, Avidzba Anatolii Mkanovych,

2 records

Zojogo

Terminated

Clematis L. · Clematis

Wim Snoeijer

1 record

ZO16170

Active

Clematis L. · Clematis

J.VAN ZOEST BEHEER B.V.

1 record

4475

Active

Hybrids between Citrus x aurantium L. x Citrus trifoliata L.

INCONNU (FR)

1 record

Xxl White Heaven

Terminated

Hibiscus moscheutos L. · Crimson-eyed rose mallow

Green Works International B.V.

1 record

WP18 CAS06

Active

Dianthus x allwoodii hort. · Allwood pink

Whetman Plants International Limited

1 record

White Sarah Bernardt

Terminated

Paeonia lactiflora Pall. · Chinese peony

De Wilgenhoek Beheer B.V.

1 record

White Zebra

Withdrawn

Brunnera macrophylla (Adams) I. M. Johnst. · Siberian bugloss

Chris Ghyselen

1 record

WESTARR

Active

Astrantia major L. · Masterwort

Jonathan J. Tuite

1 record

Visions Inferno

Active

Astilbe Buch.-Ham. ex D. Don · False goat's beard

Wilhelmus Franciscus van Veen

1 record

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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.