COSEH 1070
ActiveHelleborus niger L. · Christmas rose
Josef Heuger
Variety traits
Abundance and duration of flowering are phenological indicators reflecting the density of flowers on a plant and the time span of the flowering phase, which determine the potential productivity and adaptability of a variety.
Mentioned in descriptions 4 764 varieties reference book.
Duration of flowering characterizes the period in days during which the plant is in this phase, defining the crop's window of vulnerability to external factors. Abundance of flowering represents the quantitative or visual density of flowers on a plant, serving as an indicator of reproductive capacity and potential yield.
During variety testing, evaluation is carried out based on phenological dates, including the onset, peak, and end of flowering, as well as by using scoring scales. High scores are assigned to varieties with synchronous and uniform flowering without abnormalities, whereas low values indicate weak or uneven plant development.
These indicators are determined by the genetic characteristics of the variety, as well as by the influence of photoperiodism, temperature regime, and moisture availability. Flowering stability is evaluated by comparing with regionalized standard varieties, with deviations in timing of more than five days being considered significant for determining the maturity group.
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 L. · Christmas rose
Josef Heuger
Clematis L. · Clematis
Poulsen Roser A/S^^^Raymond J. Evison Ltd.
Clematis L. · Clematis
Poulsen Roser A/S^^^Raymond J. Evison Ltd.
Clematis L. · Clematis
Poulsen Roser A/S^^^Raymond J. Evison Ltd.
Chrysanthemum L. · Chrysanthemum
Arie Gerard Post
Chrysanthemum L. · Chrysanthemum
Arie Gerard Post
Gypsophila L. · Baby's breath
ALOYSIUS A.J.HOOIJMAN
Helleborus niger L. · Christmas rose
Josef Heuger
hybrids between Pelargonium peltatum and Pelargonium zonale · Ivy-leaved geranium
Tobias Dümmen
Pelargonium grandiflorum (Andrews) Willd. · Regal pelargonium
Michalik Andrea|Dresden, DE
Torenia L. · Bluewings
Gavriel Danziger
Lobularia maritima (L.) Desv. · Sweet alyssum
Gavriel Danziger
Helleborus niger L. · Christmas rose
Josef Heuger
Portulaca oleracea L. · Common purslane
Koot Arjan
Begonia x hiemalis Fotsch · Elatior Begonia
Man, Jan|Amstelveen, Netherlands
Leucanthemum maximum (Ramond) DC. · Maximum daisy
van Sambeek Ellen
Buddleja davidii Franch. · Butterfly bush
Koot Johannes Adrianus Maria
Buddleja davidii Franch. · Butterfly bush
Van Son & Koot Holding B.V.
Begonia x hiemalis Fotsch · Elatior Begonia
Beekenkamp Annie Cornelia
Phalaenopsis Bl. · Moth Orchid
Schoone Rene
Torenia L. · Bluewings
Gavriel Danziger
Brachyscome angustifolia
Evan Philip Clucas
Petunia Juss. · Petunia
Plant 21 LLC
Curcuma alismatifolia Gagnep. · Siam tulip
Timothy J.H. Hoogkamp