Cultivation

Winter covering

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.

Sources10

Breakdown by crop

Found in these crops

Apple 613 Grapevine 393 Tomato 340 Peach 338 Melon 293 Cauliflower 270 Bell pepper 263 Perennial ryegrass 246 Rose 242 Cucumber 230 Watermelon 219 Bigleaf hydrangea 198

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.

Friasum

Application submitted

Cucumis sativus L. · Cucumber

1 record

Hibou noir

Active

Vitis vinifera L. · Common grape vine

1 record

Hellikki

Terminated

Rhododendron molle (Blume) G. Don · Chinese azalea

1 record

Hecstart

Withdrawn

Diascia Link & Otto · Twinspur

1 record

Forever & Ever

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Trend Floral of Canada

5 records

Harnas Oza

Application submitted

Allium sativum L. · Garlic

1 record

Heartland

Withdrawn

Poa pratensis L. · Kentucky bluegrass

1 record

DOÑA BLANCA

Active

Vitis vinifera L. · Common grape vine

1 record

De Husi

Active

Cydonia oblonga Mill. · Quince

1 record

Eva

Active

Fagopyrum esculentum Moench · Buckwheat

1 record

Glowing Ember

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Brugger

1 record

Divine

Active

Lilium longiflorum Thunb. · Easter lily

1 record

Fireworks

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Yamamoto Takeomi

1 record

Grasa de Cotnari 1 Cot

Protection expired

Vitis L. · Grapevine

1 record

Germaine Mouillère

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Mouillère E.

1 record

Dajka Margit emléke

Active

Rosa L. · Rose

1 record

EMBARQUE

Application submitted

Allium cepa L. var. cepa · Onion

1 record

Granit F1

Application submitted

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

1 record

Edyta Ożarowska

Active

Lactuca sativa L. · Lettuce

1 record

Fuji Snowstorm

Active

Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven

No information of breeder available for this variety

1 record

Crimson Rambler

Terminated

Ipomoea purpurea (L.) Roth · Tall morning glory

1 record

Early Laxton

Active

Prunus domestica L. subsp. domestica · Plum

1 record

Europa

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Schadendorff H.

1 record

Frisée d´Amérique

Protection expired

Lactuca sativa L. · Lettuce

Semenarna Ljubljana, SI

1 record

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Cultivation

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.