Variety traits
Frost hardiness is the genetically determined ability of a plant to withstand exposure to sub-zero temperatures without tissue damage. This indicator reflects the critical temperature threshold beyond which the plant dies.
Mentioned in descriptions 11 978 varieties reference book.
Frost hardiness represents the ability of a plant organism to resist the impact of low sub-zero temperatures. It determines the critical threshold above which plant tissues undergo irreversible damage or death. Unlike overall winter hardiness, which also accounts for damping-off and the effects of thaws, frost hardiness focuses specifically on the cellular response to cold exposure.
This trait is genetically determined; however, its expression depends on the physiological state of the plant and the dynamics of external conditions. Frost hardiness is not a constant value: it increases during the period of deep winter dormancy and gradually decreases towards spring, as the plant loses its ability to resist cold due to dehardening.
The evaluation of frost hardiness during variety testing is conducted through laboratory freezing in controlled conditions or through long-term field observations of crop survival. For variety comparison, scoring scales, percentage of survival, or the determination of minimum permissible temperatures in degrees Celsius are used. Maximum realization of the innate genetic potential for frost hardiness is ensured by optimal sowing dates and adequate phosphorus-potassium fertilization in the autumn.
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.
Malus domestica (Suckow) Borkh. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Eryngium alpinum L. · Alpine sea holly
Star Jan
Dianthus x allwoodii hort. · Allwood pink
Plant Genetics International Ltd.
Griselinia littoralis (Raoul) Raoul · Griselinia
TOM JOHNSON
Elaeagnus x ebbingei Boom
Vivies Christian|Toulouse, FR
Lilium L. · Lily
Testcentrum Voor Siergewassen B.V.
Clematis L. · Clematis
Wim Snoeijer
Clematis L. · Clematis
WILLEM STRAVER
Lonicera caerulea L. var. emphyllocalyx (Maxim.) Nakai · Honeyberry
Thompson Maxine M.
Rosa L. · Rose
Zlesak, David
Leucanthemum x superbum (Bergmans ex J. W. Ingram) D. H. Kent · Shasta daisy
Trees Scott C
Lilium L. · Lily
Mak Nicolaas Aloysius Maria|CA 't Zand, NL
Clematis L. · Clematis
Wim Snoeijer
Lilium L. · Lily
PEACOCK B.V., IMANSE LELIEVEREDELING B.V.
Tulipa L. · Tulip
Testcentrum voor Siergewassen B.V.
Hemerocallis L. · Daylily
Heemskerk Gerardus J. C. M.
Astilbe simplicifolia Makino · Star astilbe
Gerardus Johannes van Veen
Echinacea Moench. · Coneflower
Korlipara Harini|Canby, OR, US
Veronica spicata L. · Spiked speedwell
Verschoor Janus
Abelia x grandiflora Rehder · Glossy abelia
Wevo B.V.
Vitis vinifera L. · Common grape vine
Rumen Conev^^^Daryl Somers
Geranium wallichianum D. Don ex Sweet · Wallich's geranium
van Noort Marco|2361 HG Warmond, NL
Geum quellyon Sweet x Geum rivale L.
Crowther Timothy|Arundel, GB
x Heucherella H. R. Wehrh. · Foamy bells
TERRA NOVA NURSERIES INC