HELLEBORUS niger

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HELLEBORUS niger

White Christmas Rose
Select Item No. HA120

Available

One Portion is usually sufficient for approx. 50 plants.
Please switch to gram for larger quantities.



Plant Description

Life Cycle: Perennial
Family: Ranunculaceae
Origin: Southern Alps, northern Italy, Austria and northwest through the Balkans
Distinction: Award of Garden Merit (A.G.M.) from the Royal Horticultural Society.
Special Features: Gorgeous, pure white blossoms at a time when flowering is scarce. Very long-lived. Long-lasting cut flowers. Early spring flowering. Dislikes boggy soils.
Historical: Cultivated since Roman times.
 
Basic Colour: (white / cream)
Flower Colour: white
Natural Flowering Period: November - February
 
Winter Hardiness Zones: Z3 - Z8
Foliage: thick, leathery
Growth Habit: clumping
Height with Flowers: 35 cm
Spacing between Plants: 45 cm
Soil Requirements: alkaline / average
Location:
Characteristics: toxic plant / medicinal plant
Usage: honey-bee food plant / suitable for cutting
Grams per 1000 seeds: 9.09091 Gram
Seeds per Gram
(does not correspond to the number of plants!):
110
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
50 Gram
Sowing Rates/Trays: 5 per cell
Plug tray recommended size(s): open flats / 72
Sowing Direction:

(19) To stop the germination inhibition give seeds a warm compost (about +22°C) [about 72°F] with constant humidity for at least 6 weeks. Then keep cold (–4 to +4°C) [25 to 39°F] for 6–8 weeks. Usually, the germination starts at +4°C [39°F]. Raise temperatures gradually up to +10°C [50°F] until germination is completed. If the warm or cold period was not long enough the seeds will not germinate until the following year. They will then need another warm period (summer) and a cold period (winter). Well-known examples: Cimicifuga and Helleborus.

Best Sowing Date
(northern Hemisphere, Field condition):
early summer - late summer
Sowing Time Hint: For best results sow after harvest, approx. July.
Sowing to Germination: 16 - 24 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Potting: 6 - 10 weeks
Cutting back at Transplanting: Not Necessary.
Container Size(s): 1-2 plugs per 11/12 cm (4 1/2") / 2-3 plugs per 15 cm (6")
Vernalization: There is no current research on vernalization but a prudent recommendation for any perennial would be 6-12 weeks (a few might need 15 weeks!) at an average daily temperature of 40°F (5°C). Exposure to cold may not be necessary for flowering but might improve quality.
Forcing: This species is not a suitable candidate for forcing.
Fertilizer: Medium (150-200 ppm)
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