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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.

TNPENHPU

Active

Penstemon hartwegii Benth. · Hartweg's beardtongue

Janet N. Egger

1 record

Tinpurbud

Application submitted

Buddleja davidii Franch. · Butterfly bush

SCOTT C TREES

1 record

Vesuvius

Active

Bistorta amplexicaulis (D. Don) Greene · Red bistort

Chris Ghyselen

1 record

Versweta

Active

Phlox paniculata L. · Garden phlox

A. VERSCHOOR HORTICULTURE IMPORT-EXPORT B.V

1 record

Turandot

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

Vulcano

Withdrawn

Heuchera L. · Coral Flower

Sandrine Delabroye

1 record

WMHYDFBVYWMH

Application submitted

Hydrangea luteovenosa Koidz. x Hydrangea macrophylla (Thunb.) Ser.

Ushio Sakazaki

1 record

Verbrota

Terminated

Hypericum androsaemum L. · Tutsan

Edwin Verheijen

1 record

Tessumheat

Active

Alstroemeria L. · Alstroemeria

Horti Partners V.O.F.

1 record

Van Gogh

Withdrawn

Hibiscus syriacus L. · Rose of Sharon

Boomkwekerij Toon van Aert B.V.

1 record

White Giant

Active

Astrantia major L. · Masterwort

Ferdinandushof V.O.F.

1 record

Verosa

Terminated

Hibiscus syriacus L. · Rose of Sharon

Van Aart Boomkwekerijen

1 record

TNECHKW

Active

Echinacea purpurea x Echinacea tennesseensis

HARINI KORLIPARA

1 record

Tiny Star

Terminated

Lilium L. · Lily

Mak Breeding B.V.

1 record

Tiny Bell

Terminated

Lilium L. · Lily

Mak Breeding B.V.

1 record

Tuirud

Active

Rudbeckia fulgida Aiton · Orange coneflower

Jonathan J. Tuite

1 record

TAN14833

Active

Rosa L. · Rose

CHRISTIAN EVERS

1 record

WATFLOR

Withdrawn

Buddleja davidii Franch. · Butterfly bush

STONE GREEN NURSERIES

1 record

Vdara

Terminated

Lilium L. · Lily

Testcentrum voor Siergewassen B.V.

1 record

Vanilla Ice

Terminated

Carex morrowii Boott · Japanese sedge

Bernhard Merz

1 record

Thalia

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Jochen Putfarken

1 record

Tessumbeach

Active

Alstroemeria L. · Alstroemeria

Horti Partners V.O.F.

1 record

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