POLEMONIUM caeruleum

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POLEMONIUM caeruleum

Jacob's Ladder
[Blue Pearl]
Select Item No. PA480

Also available as:

Available

1 Portion contains 20-250 seeds depending on value and size.
Please switch to gram for larger quantities.



Plant Description

Life Cycle: Perennial
Family: Polemoniaceae
Origin: Northern Hemisphere: meadows, riparian forests, roadsides from the hills to the mountains.
Special Features: Nice ferny foliage and abundant flowers. The arrangement of the leaves on the stems looks like ladders. Reblooms after dead-heading.
Historical: The species has been used in gardens since Roman.
 
Basic Colour: (violet)
Flower Colour: Lavender blue
Natural Flowering Period: June - July
 
Winter Hardiness Zones: Z2 - Z8
Foliage: cut leaves resembling a fern frond
Growth Habit: clumping
Height with Flowers: 60 cm
Spacing between Plants: 45 cm
Soil Requirements: moist / average
Location:
Characteristics: medicinal plant / groundcover
Usage: honey-bee food plant / suitable for cutting / flowering pot plant
Portion weight: 0.166 Gram
Grams per 1000 seeds: 0.83333 Gram
Seeds per Gram
(does not correspond to the number of plants!):
1200
Gram to get 1000 plants
(if sown directly into pots etc. you will need a larger quantity):
3 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
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")
Fertilizer: Medium (150-200 ppm)
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