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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

Found in these crops

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.

Aconitum L. · Monkshood

Van Blokland Robbert G. C.|De Hoef, NL

3 records

Picea pungens Engelm. · Blue spruce

Kools Nelis|Deurne, NL

3 records

Cdcery3

Active

Erysimum L. · Wallflower

Charles Carr

3 records

Agapanthus L'Hér. · Lily of the Nile

Grahame Morrison

3 records

Black Jack

Application submitted

Sedum L. · Ice Plant

Walters Gardens Inc

3 records

Phlox subulata L. · Creeping phlox

Bartels Gosen B.H.

4 records

Thuja plicata Donn. ex D. Don · Western red cedar

DANIËLS BOOMKWEKERIJ V.O.F.

3 records

BFCCRAP

Active

Clematis texensis Buckley · Crimson clematis

Fretwell Barry

4 records

Tiarella L. · Foamflower

TERRA NOVA NURSERIES INC

3 records

Rubus idaeus L. · Red raspberry

Ioriatti Diego

3 records

Cornus alba L. · Red-barked dogwood

Ron Boughen

3 records

Helleborus x ballardiae B. Mathew

Josef Heuger

3 records

Buddleja L. · Buddleia

Trees Scott C

3 records

Helleborus niger L. · Christmas rose

Josef Heuger

3 records

Buddleja davidii Franch. · Butterfly bush

Koot Johannes Adrianus Maria

3 records

Geranium wallichianum D. Don ex Sweet · Wallich's geranium

Kramer Hans|Ede, NL

3 records

Bonmadre

Active

Argyranthemum frutescens (L.) Sch. Bip. · Marguerite daisy

Andrew Bernuetz

3 records

Hydrangea paniculata Siebold · Panicled hydrangea

Kraan Kees Jan|Papenveer, NL

3 records

Rosa L. · Rose

DAVID JC AUSTIN

3 records

Sorbaria sorbifolia (L.) A. Braun

Jacques Couturieux

3 records

Scabiosa columbaria L. · Small scabious

Trees Scott C

4 records

Helleborus niger L. · Christmas rose

Josef Heuger

3 records

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