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.

Eco Sentry

Active

Acer campestre L.

ANDRE VAN NIJNATTEN

2 records

Dunja

Active

Calluna vulgaris (L.) Hull · Common heather

Johannes van Leuven

2 records

Candy Wind

Active

Hibiscus L. · Hibiscus

Wendy R Bergman

2 records

CAMGOOD

Active

Campanula L. · Bellflower

Blooms of Bressingham Ltd

2 records

DARDOM

Active

Hydrangea L. · Hydrangea

Darthuizer Boomkwekerijen B.V.

2 records

Dophlflacoim

Active

Phlox paniculata L. · Garden phlox

van Sambeek Ellen

2 records

Crossfire

Active

Tulipa L. · Tulip

Testcentrum voor Siergewassen B.V.

2 records

COSEH 820

Active

Helleborus x nigercors J. T. Wall

Josef Heuger

2 records

COSEH 6600

Active

Helleborus L. · Christmas Rose

Josef Heuger

2 records

Bronner

Active

Vitis L. · Grapevine

Norbert Becker

2 records

Coctarlotte

Active

Rosa L. · Rose

JAMES COCKER AND SONS

3 records

Blue Lips

Active

Salvia bulleyana Diels

Molter B.V.

2 records

Devon Wizard

Protection expired

Dianthus L. · Carnation

H.R. WHETMAN & SON

2 records

Citronella

Active

Ilex verticillata (L.) A. Gray · Winterberry

Jan Johannes Stolk

2 records

Bostulu

Active

Buddleja L. · Buddleia

SCOTT C TREES

2 records

Cygnet

Active

Tiarella L. · Foamflower

TERRA NOVA NURSERIES INC

2 records

Bridal Gown

Active

Telopea speciosissima x Telopea oreades

Graeme Downe

2 records

Cabella

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

Coussine

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Jacques Couturieux

2 records

Bremdra

Active

Geranium L. · Crane's Bill

Alan H. Bremner

2 records

BR2012

Active

Euonymus japonicus Thunb. · Japanese spindle

Bart van Roessel

2 records

COSEH 6400

Active

Helleborus L. · Christmas Rose

Josef Heuger

2 records

COSEH 6000

Active

Helleborus L. · Christmas Rose

Josef Heuger

2 records

Balburanim

Active

Diplacus aurantiacus (Curtis) Jeps. · Bush monkeyflower

Trees Scott C

2 records

1 2 ... 45 46 47 48 49 50 51 ... 125 126 Next

Jump to page 18 36 38 54 58 72 90 108

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

All terms →

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.