Cultivation
Winter covering is an agrotechnical practice for plant protection, indicating a variety's insufficient adaptation to the local climate. The necessity of this procedure shifts crop cultivation into an intensive and labor-intensive format, requiring regular expenditures and strict adherence to work s…
Mentioned in descriptions 14 029 varieties reference book.
The need for winter covering manifests as mandatory annual plant preparation, including mulching, hilling, bending down shoots, or using protective frames and materials. This is a variety marker indicating its inability to independently withstand local climatic conditions, which compels the agronomist to create an artificial environment for protection against frost damage.
Protection effectiveness directly depends on adhering to timelines and the quality of materials used. Early covering at high temperatures can provoke rotting or the development of fungal diseases, while late covering will not protect against early frosts. The success of the operation is also determined by the general condition of the plants: weakened specimens or an excess of nitrogen nutrition in autumn increase the risk of death even when protective structures are present.
Assessing the feasibility of covering relies on economic profitability and agrotechnical capabilities. With the aging of woody and shrub crops, the complexity of installing structures increases, which reduces the scalability of plantings. When choosing a variety, it is recommended to consider frost resistance data and prioritize regionalized winter-hardy alternatives that do not require manual intervention during the winter period.
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.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Yusuke KATO, JP
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis melo L. · Melon
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
Cucumis melo L. · Melon
Brassica oleracea L. (Cabbage Group) · Cabbage
Daehnfeldt Hayetr O A/S (DK)
Poa pratensis L. · Kentucky bluegrass
PURE SEED TESTING
Linum usitatissimum L. · Common flax
Medovarszky Zoltan / Meszaros Geza / Bona Lajos
Cucumis melo L. · Melon
Hollar Seeds, USA
Malus domestica (Suckow) Borkh. · Apple
Raphanus sativus L. var. oleiformis Pers. · Oil radish
ILVO Plant
Lactuca sativa L. · Lettuce
Nunhems B.V.
Agrostis capillaris L. · Common bent
DLF-TRIFOLIUM DANSK PLANTEFORAEDLING
Aristaloe aristata (Haw.) Boatwr. & J. C. Manning · Lace aloe
Antonius C.J. van der Hoorn
Lactuca sativa L. · Lettuce
Nunhems Netherlands BV
Brassica oleracea L. (White Cabbage Group) · White cabbage
NONGWOO BIO CO.LTD
Festuca arundinacea Schreb. · Tall fescue
JOUFFRAY-DRILLAUD
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
UNITED GENETICS SEEDS CO
Festuca arundinacea Schreb. · Tall fescue
Top Green (FR)
Triticum aestivum L. · Bread wheat
SEMILLAS BATLLE, S.A.
Lactuca sativa L. · Lettuce
Vilmorin-Mikado S.A.S.
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
Sakata Seed Corporation (SCC)
Vicia villosa Roth · Hairy vetch
ROCALBA, S.A.
Trifolium alexandrinum L. · Egyptian clover
Jerry Hall (US)