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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

Winter protection — Hydrangea macrophylla 237 Winter protection for lettuce 141 Winter protection of roses 96 Winter Cover — White Cabbage 87 Winter protection of grapevine 79 Winter covering of radish 71 Winter protection for lilies 63 Winter protection of chrysanthemums 52 Winter protection of grapes 37 Winter protection — Garden strawberry 29 Winter protection — raspberry and blackberry 25 Winter protection for carrots 25 Winter protection for Clematis 20 Winter protection of blackberries 20 Winter covering of endive 19 Winter protection — Hydrangea serrata 17 Winter protection of fig trees 15 Winter protection of Hydrangea 15 Winter covering of potatoes 15 Winter protection of radish 14 Winter protection — Garden Chrysanthemum 13 Winter protection — Chinese cabbage 13 Winter protection of asparagus 11 Winter protection — Rubus idaeus L. x Rubus subg. Eubatus Focke 11

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.

KERVIC

Terminated

Petunia Juss. · Petunia

David William Kerley, Priscilla Grace Kerley

1 record

Limerock Dream

Terminated

Coreopsis verticillata L. · Whorled tickseed

PAMELA S.SCHWEIZER

1 record

Jurassica

Terminated

Solanum quitoense Lam. · Lulo

Bunnik Plants 11 B.V.

1 record

KLESP22004

Application submitted

Sanvitalia procumbens Lam. · Creeping zinnia

Guido von Tubeuf

1 record

KLEPH19035

Active

Petunia Juss. · Petunia

Antonella Capo

1 record

KLEOE23764

Active

Osteospermum L. · Osteospermum

MAIKE BOXRIKER

1 record

Ipanema

Active

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

2 records

KEYLIB

Withdrawn

Abelia x grandiflora Rehder · Glossy abelia

Klemens Keysers

1 record

Kolmjo

Terminated

Hedera helix L. · Common ivy

Kolster Beheer B.V.

1 record

Julie Fowlis

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

Kolmamissi

Application submitted

Salvia xjamensis J. Crompton · Jame sage

Kolster Holding B.V.

1 record

Hortmacanzo

Withdrawn

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Horteve Breeding B.V.

1 record

KORirrlaus

Application submitted

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

1 record

HORE140103

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Lendert De Vos

1 record

Hollands Glorie

Terminated

Delphinium elatum L. · Alpine delphinium

Firma Kwekerij Delphi V.O.F.

1 record

IFECSSC

Active

Echinacea Moench. · Coneflower

Jelle van den Haak

2 records

KLEAT12609

Terminated

Arctotis L. · African daisy

Nuflora International Pty Ltd

1 record

HSPS21

Application submitted

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

Plant Select N.V.

1 record

Hachlila

Active

Dasiphora fruticosa (L.) Rydb. subsp. fruticosa · Shrubby cinquefoil

Holger Hachmann

1 record

Hoh 8679

Application submitted

Prunus domestica L. · European plum

Walter Hartmann

1 record

KLECN23088

Application submitted

hybrids between Campanula portenschlagiana Schult. and Campanula poscharskyana Degen

Klemm+Sohn GmbH &Co.KG

1 record

Hilmimi

Terminated

Dianthus caryophyllus L. · Carnation

HilverdaKooij B.V

1 record

Glen Scotia

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

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