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Variety traits

Winter hardiness

Winter hardiness is a complex indicator of a variety's ability to remain viable throughout the winter and early spring periods, including resistance to frost and other environmental stress factors.

Mentioned in descriptions 27 261 varieties reference book.

Winter hardiness is a complex plant characteristic that includes resistance to freezing, smothering, waterlogging, frost heaving, and winter desiccation. Unlike frost resistance, which is limited to tolerance of low temperatures, winter hardiness takes into account the entire spectrum of adverse effects that lead to plant death or damage during the cold period.

The winter hardiness of a variety is evaluated using methods of field assessment of crop conditions after winter, employing scoring scales, as well as laboratory studies. The latter include direct freezing of plant monoliths, biochemical analyses of sugar accumulation, verification of the viability of the tillering node, and the use of genetic markers to determine resistance.

The level of winter hardiness depends on the genetic potential of the variety, the plant's ability to harden, agronomic cultivation practices, and the microclimate characteristics of a specific site. When choosing a variety, one should focus on regionalized forms, bearing in mind that the resistance indicator is relative and requires comparison with local standards and growing conditions.

Sources10

Breakdown by crop

Winter Hardiness of Roses 555 Winter hardiness of common wheat 220 Winter hardiness of apple trees 188 Winter Hardiness — Hydrangea macrophylla 187 Pear Winter Hardiness 123 Winter hardiness — perennial ryegrass 120 Winter Hardiness of Lily 91 Winter hardiness of winter rapeseed 81 Peach winter hardiness 71 Plum Winter Hardiness 65 Winter Hardiness of Clematis 61 Grapevine Winter Hardiness 56 Winter hardiness of winter barley 56 Winter hardiness — garden strawberry 52 Winter hardiness of sweet cherry 48 Tulip winter hardiness 42 Heuchera winter hardiness 40 Winter Hardiness of Alfalfa 39 Chrysanthemum winter hardiness 39 Winter hardiness of triticale 36 Winter Hardiness of Apple 36 Winter hardiness of Hydrangea serrata 36 Grapevine Winter Hardiness 35 Winter hardiness of apricot 35

Found in these crops

Rose 1 062 Apple 843 Bread wheat 657 Lily 410 European pear 348 Bigleaf hydrangea 315 Peach 264 Rapeseed 258 European plum 245 Grapevine 229 Perennial ryegrass 224 Sweet cherry 223

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.

Summer Veil

Terminated

Quercus cerris L. · European turkey oak

Boomkwekerij Gebr. van den Berk B.V.

1 record

Sunny Star

Active

Pyracantha coccinea M. Roem. · Firethorn

Van der Sar V.O.F.

1 record

Snow White

Terminated

Zantedeschia Spreng. · Arum-lily

FLIP SCHRAM

1 record

Summer Breeze Rose

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

ABZ Aardbeien uit Zaad Holding B.V.

2 records

Sweet Talk

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

Snowcicle

Application submitted

Hydrangea quercifolia W. Bartram · Oakleaf hydrangea

RICHARD DAVIS

1 record

Sweetly

Active

Anemone x hybrida Paxton · Japanese anemone

Hans A. Hansen

1 record

SNEP24

Application submitted

Skimmia japonica Thunb. · Japanese skimmia

Snepvangers Tuinplanten B.V.

1 record

Summer Carnival

Terminated

Hibiscus coccineus x Hibiscus moscheutos L.

Hans A. Hansen

1 record

Stainless Steel

Withdrawn

Aconitum L. · Monkshood

A. Geertings & Zonen B.V.

1 record

SRPBUD989

Terminated

Buddleja davidii Franch. · Butterfly bush

SCOTT C TREES

1 record

RUTBU2016

Active

Buddleja davidii Franch. · Butterfly bush

Pierre Rutten

1 record

SMNHRL

Active

Hydrangea arborescens L. · Smooth hydrangea

TIMOTHY D WOOD

1 record

SMNBDD

Active

Buddleja davidii Franch. · Butterfly bush

Megan Mathey

1 record

RUIASTWHI

Active

Astrantia major L. · Masterwort

Gebroeders Van Ruiten C.V.

1 record

Serene Angel

Withdrawn

Lilium L. · Lily

Rooijakkers Breezand B.V.

1 record

Snow Star

Withdrawn

Astrantia L. · Masterwort

A. Geertings & Zonen B.V.

1 record

Rogalski

Active

Daphne odora Thunb. · Winter daphne

Przemyslaw Rogalski

1 record

Secret Passion

Terminated

Hybrids between Echinacea purpurea (L.) Moench and Echinacea paradoxa (Norton) Britton

HARINI KORLIPARA

1 record

Saani

Active

Vaccinium L. · Bilberry

Maa- ja elintarviketaouden tutkimuskeskus (MTT)/ Present Luonnonvarakeskus (Luke))

1 record

SMNSDTP

Active

hybrids between Syringa meyeri C. K. Schneid. and Syringa pubescens Turcz.

TIMOTHY D WOOD

1 record

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