HL 1018
ActiveHelleborus niger x Helleborus x hybridus
Josef Heuger
Cultivation
Cultivation in open field conditions requires the selection of varieties adapted to uncontrolled environmental factors and climatic fluctuations. Such varieties are characterized by genetic plasticity, stress tolerance, and a vegetation period consistent with local weather conditions.
Mentioned in descriptions 28 305 varieties reference book.
Varieties for open field cultivation are bred for adaptation to uncontrolled environmental conditions, unlike greenhouse varieties. Their key feature is the ability to provide a stable yield under fluctuations in temperature, humidity, and light intensity, as well as increased resistance to regional disease pressure.
The choice of variety for open field cultivation depends on the phenological characteristics of the plant, where the life cycle must fit within the frost-free period of a specific location. Morphology is an important factor: preference is often given to determinate forms, resistant to wind stress, and the crop's ability to mature uniformly to facilitate harvesting.
Cultivation technology in open field conditions requires taking into account the biological characteristics of the variety, such as the need for insect pollination. Varieties for field conditions possess higher plasticity, which allows them to maintain yield under less intensive care and nutrient management, while greenhouse counterparts often demonstrate reduced productivity and susceptibility to stress under such conditions.
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.
Helleborus niger x Helleborus x hybridus
Josef Heuger
Prunus persica (L.) Batsch · Peach
PSB Producción Vegetal S.L
Dianthus L. · Carnation
KOEKKOEK ARTHUR N.J.
Euphorbia L. · Spurge
Silvia Hofmann|SUSANNE HERDEGEN
Lilium L. · Lily
Vletter en den Haan Beheer B.V.
Phlox paniculata L. · Garden phlox
van den Haak Jelle
Dahlia Cav. · Dahlia
Verwer Aad W. M.|Lisse, NL
Lilium L. · Lily
Vletter & Den Haan Beheer B.V
Helleborus niger x Helleborus x hybridus
Josef Heuger
Helleborus orientalis Lam. · Lenten rose
Josef Heuger
Xerochrysum bracteatum (Vent.) Tzvelev · Strawflower
van Kleinwee Theodorus Cornelis Maria|Hoorn, NL
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
van Dijk Roy Robin
Gerbera L. · Gerbera
FLORIST HOLLAND B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
Zantedeschia Spreng. · Arum-lily
Sande B.V.
Delosperma cooperi (Hook. f.) L. Bolus · Trailing ice plant
Koot Arjan
Rosa L. · Rose
Select Breeding B.V.
Gaillardia aristata Pursh · Blanketflower
Syngenta Participations AG
Zantedeschia Spreng. · Arum-lily
PETER BECKMAN
Chrysanthemum L. · Chrysanthemum
Cornelis W. Dekker
Ananas comosus (L.) Merr. · Pineapple
Skotak, Jr. Chester
Lactuca sativa L. · Lettuce
WASILEWSKA IRENA
Nemesia Vent. · Nemesia
Fides B.V.