Royal Gems
ActiveHibiscus L. · Hibiscus
Fleming, David W.|8101 S. 14th St., Lincoln, NE 68512 / Fleming, James R.|8101 S. 14th St., Lincoln, NE 68512
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.
Snowy Panky
ActiveHeuchera L. · Coral Flower
Scheys Diederik Alexander Maria
Royal Cabernet
ActiveVitis vinifera L. · Common grape vine
Simone Diego Castellarin^^^Guido Cipriani^^^Michele Morgante^^^Enrico Peterlunger^^^Raffaele Testolin^^^Gabriele Di Gaspero
San Antonio Rose
ActiveLeucophyllum frutescens (Berland.) I. M. Johnst. · Barometer-bush
Shipley Nicholas Benoit / Buhrow Russ Allen
Rosy Teacups
ActiveCornus kousa Burger ex Hance · Kousa dogwood
Elwin R. Orton
Rodolfa
TerminatedLilium L. · Lily
TRIOR LELIE BV
Seiball
ActiveHypericum androsaemum L. · Tutsan
THOMAS SEIDLER
Secret Romance
ActiveEchinacea Moench. · Coneflower
Korlipara Harini
Spark Plug
ActiveCarex phyllocephala T. Koyama
Korlipara Harini
Summer Glow
ActiveAgastache Clayt. ex Gronov. · Giant hyssop
Janet N. Egger
SCHROLLA06
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Schroll Management ApS
SMNHPPH
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Wood Timothy D
SMNHPH
ActiveHydrangea paniculata Siebold · Panicled hydrangea
Megan Mathey
Sicardo Orange
TerminatedChrysanthemum L. · Chrysanthemum
PARATY B.V.B.A
Shogun
ActiveIlex crenata Thunb. · Japanese holly
Frank Schnupper
Sombrero
ActiveHelenium autumnale L. · Common sneezeweed
ARIE BLOM
RIGRUM
ActiveLavatera L. · Tree mallow
Kenneth Rigney
Shampion
ActiveMalus domestica (Suckow) Borkh. · Apple
RUP «BRESTSKAYA OBLASTNAYA SELSKOXOZYAJSTVENNAYA OPYTNAYA STANCZIYA NAN BELARUSI»
Soft Music
ActiveLilium L. · Lily
Rooijakkers Breezand B.V.
Socrates
ActiveGladiolus L. · Gladiolus
Testcentrum voor Siergewassen B.V.
San Rafael
ActiveRubus idaeus L. · Red raspberry
Viveros California S.L.^^^Juan Enrique Castillo Garcia
SMNMAKTSR
TerminatedHydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven
Wood Timothy D
Star of Fire
ActiveAstrantia major L. · Masterwort
Jacobus R. de Jong
Smithopus7
ActivePaeonia L. · Peony
Smith Donald R.