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.
Rosa L. · Rose
Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes
Solanum lycopersicum L. · Tomato
Vilmorin-Mikado S.A.S.
Raphanus sativus L. var. sativus · Radish
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Lactuca sativa L. · Lettuce
Nunhems Netherlands BV
Rosa L. · Rose
Wilhelm Kordes / Tim-Hermann Kordes / Margarita Kordes in Fa. W. Kordes' Söhne Rosenschulen GmbH & Co KG
Rosa L. · Rose
Wilhelm Kordes
Calluna vulgaris (L.) Hull · Common heather
Ernst Jacke (Gartenbau)
Rosa L. · Rose
Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes
Spinacia oleracea L. · Spinach
Pop Vriend Research B.V.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
Avena sativa L. · Oat
Selgen
Poa pratensis L. · Kentucky bluegrass
PURE SEED TESTING
Cucumis melo L. · Melon
HM.Clause S.A.S.
Cucumis sativus L. · Cucumber
Omni Sever
Malus domestica (Suckow) Borkh. · Apple
Rudolfs Dumbravs
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
SYNGENTA SEEDS B.V.
Festuca rubra L. · Red fescue
Alicja Ramenda
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Vilmorin SA (FR)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum melongena L. · Eggplant
DAVID CHISHOLM
Solanum lycopersicum L. · Tomato
ISI Sementi, I
Brassica oleracea L. (Cauliflower Group) · Cauliflower
HM.CLAUSE
Malus Mill. · Apple
Jozef Morren c/o Jomobel N.V.
Phaseolus vulgaris L. · Common bean
VEYRAT