CRAMBE cordifolia

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CRAMBE cordifolia

Colewort, Giant Kale and Greater Sea Kale
Select Item No. CA673

Available

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



Plant Description

Life Cycle: Perennial
Family: Brassicaceae
Origin: Caucasus
Distinction: Award of Garden Merit (A.G.M.) from the Royal Horticultural Society.
Special Features: Distinctive foliage and tall, spreading sprays with hundreds of beautiful, tiny white flowers. A regal speciment plant.
 
Basic Colour: (white / cream)
Flower Colour: white
Natural Flowering Period: June - July
 
Winter Hardiness Zones: Z5 - Z8
Foliage: large, heart-shaped, cabbage-like
Growth Habit: tall
Height with Flowers: 200 cm
Spacing between Plants: 150 cm
Soil Requirements: dry / well-drained
Location:
Characteristics: solitary plant
Usage: suitable for cutting
Grams per 1000 seeds: 33.33333 Gram
Seeds per Gram
(does not correspond to the number of plants!):
30
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
60 Gram
Sowing Rates/Trays: 4 per cell
Plug tray recommended size(s): 72 / 128
Sowing Direction:

(8) These perennial seeds germinate very irregularly over a long period. Lower temperatures of less than +5°C [41°F] are very effective. Seed trays should not be discarded prematurely. Constant moisture must be maintained. Do not leave in direct sunlight. For Alstroemeria we recommend to keep sowing for 3 weeks at approximately +30°C [86°F], then 3 weeks at +5°C [41°F], then at +21°C [70°F].

Best Sowing Date
(northern Hemisphere, Field condition):
early summer - summer
Sowing to Germination: 4 - 6 weeks
Germination to Transplant: 6 - 8 weeks
Transplanting to Potting: 6 - 8 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: An obvious place to experiment - following vernalization - would be raising daytime temperatures to 60° - 65°F (15° - 17°C). Provide 16 hours of continuous lighting. During the short days of winter, provide a night interruption lighting of 4 hours between 10:00 p.m. and 2:00 a.m.
Fertilizer: Medium (150-200 ppm)
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