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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.

Daniel Searle

Active

Vitex pseudonegundo (Hausskn.) Hand.-Mazz.

Kris Jarantoski

1 record

Dark Star

Terminated

Erica L. · Heather

Johannes van Leuven

1 record

Cayenne

Terminated

Gladiolus L. · Gladiolus

Coöperatieve Kwekersvereniging "For Ever" U.A.

1 record

Cap Sizun

Terminated

Pittosporum tenuifolium Gaertn. · Kohuhu

Ludovic Ladan E.A.R.L.

1 record

Darius

Withdrawn

Chaenomeles japonica (Thunb.) Lindl. ex Spach · Japanese quince

Kimmo Rumpunen^^^Silvija Ruisa^^^Darius Kviklys

1 record

Delallier

Active

Rosa L. · Rose

Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.

1 record

Balsukawi

Active

Phlox paniculata L. · Garden phlox

Christa Kievit

1 record

David Searle

Active

Vitex pseudonegundo (Hausskn.) Hand.-Mazz.

Kris Jarantoski

1 record

Balsclemc

Withdrawn

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

Jianping Ren

1 record

Dark Miracle

Active

Phlox paniculata L. · Garden phlox

Van Leeuwen Bloemen B.V.

1 record

Dark Green

Active

Ilex crenata Thunb. · Japanese holly

Plant Select N.V.

1 record

Bee Green

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Hans Dofferhoff^^^Mike Dofferhoff

1 record

Balmibepro

Terminated

Penstemon Schmidel. · Beard Tongue

Valentin Taquet

1 record

BC2401WIZ

Application submitted

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Blooming Creations International B.V.

1 record

Dalila

Terminated

Lilium L. · Lily

De Jong Beheer B.V.

1 record

BOZVAZ018

Active

Rosa L. · Rose

Pheno Geno Roses B.V.

1 record

Bourbon Street

Terminated

Lilium L. · Lily

Testcentrum voor Siergewassen B.V.

1 record

DABLAGE02

Active

Lagerstroemia indica L. · Crape myrtle

Alain Dabadie

1 record

Burning Heart

Withdrawn

Veronica L. · Speedwell

Hebe Center Holland B.V.

1 record

Burncross

Withdrawn

Buddleja davidii Franch. · Butterfly bush

JOHN R. SENIOR

1 record

CORAG02BL

Terminated

Agapanthus L'Hér. · Lily of the Nile

Daniel Cornelis

1 record

BULLHELI01

Withdrawn

Helianthus decapetalus L. · ten-petals sunflower

Hartwig Bull

1 record

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