POLEMONIUM caeruleum f. dissectum 'Filigree Clouds'

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POLEMONIUM caeruleum f. dissectum 'Filigree Clouds'

Jacob's Ladder
Select Item No. PA494

Available

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



Plant Description

Life Cycle: Perennial
Family: Polemoniaceae
Origin: Cultivar. Species originates from the Northern Hemisphere: meadows, riparian forests, roadsides from the hills to the mountains.
Special Features: Exquisite double split pinnatifid leaves - like fern fronds - and clusters of white flowers. Strong stems. Also available with blue flowers.
Historical: Introduced by JELITTO PERENNIAL SEEDS in 2007.
 
Basic Colour: (white / cream)
Flower Colour: brilliant white
Natural Flowering Period: June - August
Flowering: First year flowering
 
Winter Hardiness Zones: Z3 - Z8
Foliage: double split, pinncatifid, cut leaves resembling a fern frond
Growth Habit: clumping
Height with Flowers: 50 cm
Spacing between Plants: 40 cm
Soil Requirements: dry / well-drained
Location:
Characteristics: ornamental foliage plant
Usage: for the rock garden / suitable for cutting / flowering pot plant
Grams per 1000 seeds: 0.74074 Gram
Seeds per Gram
(does not correspond to the number of plants!):
1350
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
2 Gram
Sowing Rates/Trays: 2 - 3 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: 2 - 3 weeks
Germination to Transplant: 4 - 6 weeks
Transplanting to Potting: 6 - 8 weeks
Cutting back at Transplanting: Cut-back once to keep more compact.
Container Size(s): 1 plug per 8/9 cm (3 1/2") / 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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