Harfab
Protection expiredRosa L. · Rose
Phillp Harkness|Robert Harkness
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.
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
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.
Harette
ActiveRosa L. · Rose
HARKNESS NEW ROSES LTD
Happy Trails
Application submittedTiarella L. · Foamflower
Janet N. Egger
Imperial Sun
ActiveCoreopsis L. · Tickseed
Korlipara Harini
Hortmarhaso
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Horteve Breeding B.V.
Hachdon
ActiveDasiphora fruticosa (L.) Rydb. subsp. fruticosa · Shrubby cinquefoil
Holger Hachmann
Heart and Soul
ActiveAstilbe chinensis (Maxim.) Franch. & Sav. · Chinese astilbe
Verduin Henricus Gijsbertus Johannes|Heemskerk, NL
Hbachi
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
HBA215909
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
Hattfjelldal
ActiveDactylis glomerata L. · Cocksfoot
Landbruks- og matdepartementet, N - 0030 Oslo
Honey Baby
ActiveLonicera L. · Honeysuckle
PROEFSTATION VOOR DE BOOMKWEKERIJ
Gold Nugget
ActiveSempervivum xrupicola A. Kern.
Christopher M Hansen
Golden Treasure
ActiveBetula x plettkei Junge
Michal Andrusiv
HYLV18532
Application submittedHydrangea paniculata Siebold · Panicled hydrangea
Lendert De Vos
Glamour Girl
ActivePhlox paniculata L. · Garden phlox
Walters Gardens Inc
Hot Pink Riding Hood
ActivePenstemon Schmidel. · Beard Tongue
Lubbe Remy
GRHYAR1407
ActiveHydrangea arborescens L. · Smooth hydrangea
Rouwette Guido
HORE0034
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Nick van Rosmalen
Goruzam
ActiveBerberis thunbergii DC. · Japanese barberry
Zampini James W.|Perry, OH 44081-0122, US
Karley Rose
ActiveCenchrus orientalis (Rich.) Morrone · Oriental pennisetum
Sunny Border Nurseries
Golden Sunshine
ActiveSalix udensis Trautv. & C. A. Mey.
Izumi Takuya|Ehime, Iyo-city, 1606-4 Kamimitani, JP
Golden Girl
ActiveMuehlenbeckia complexa (A. Cunn.) Meisn. · lacy wirevine
Hausler Dirk / Hausler Frank
Jump and Jive
ActiveAstilbe Buch.-Ham. ex D. Don · False goat's beard
Verduin Harry G. J.|Heemskerk, NL
Hoogi021
ActivePhysocarpus opulifolius (L.) Maxim. · Ninebark
Mark Sebastiaan Hoogenraad