CARLINA vulgaris 'Silver Star'

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CARLINA vulgaris 'Silver Star'

Weather Thistle, Common Carline Thistle
Select Item No. CA277

Available

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



Plant Description

Life Cycle: Biennial
Family: Asteraceae
Origin: Eurasia
Special Features: Multiple silvery white flowers per stem. Large flowering, excellent cut flower, biennial.
Historical: Introduced by JELITTO PERENNIAL SEEDS in 1993.
 
Basic Colour: (white / cream)
Flower Colour: silvery white
Natural Flowering Period: July - September
 
Winter Hardiness Zones: Z4 - Z9
Foliage: linear oblong
Growth Habit: rosettes-forming / low-growing
Height with Flowers: 50 cm
Spacing between Plants: 30 cm
Soil Requirements: dry / well-drained / poor, lean
Location:
Usage: suitable for cutting
Grams per 1000 seeds: 1.0989 Gram
Seeds per Gram
(does not correspond to the number of plants!):
910
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
3 Gram
Sowing Rates/Trays: 3 - 4 per cell
Plug tray recommended size(s): 128 / 288
Sowing Direction:

(15) Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Seeds must be covered thinly. Do not cover very small seeds, but tightly press into the earth. Keep in cooler conditions after germination occurs.

Best Sowing Date
(northern Hemisphere, Field condition):
Anytime
Sowing to Germination: 3 - 4 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Potting: 6 - 10 weeks
Cutting back at Transplanting: Cut-back once to keep more compact.
Container Size(s): 1-2 plugs per 11/12 cm (4 1/2") / 2-3 plugs per 15 cm (6")
Vernalization: Some flowering will occur the first year without vernalization, but improved flowering will occur the 2nd year; and 3-10 weeks of cool temperatures might benefit fuller flowering in the first year.
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: Light (100-150 ppm)
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