POLEMONIUM yezoense 'Purple Rain Strain'

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POLEMONIUM yezoense 'Purple Rain Strain'

Jacob's Ladder
(caeruleum ssp. yezoense)
Select Item No. PA490


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. North Japan, Hokkaido: open, moist forest, roadsides in the mountains.
Special Features: Very attractive reddish-purple pinnate foliage from late winter to early summer. The foliage combines beautifully with other leaf and flower colors. Large flowers. Variable. Reblooms after dead-heading.
Historical: Introduced by JELITTO PERENNIAL SEEDS in 2006.
Basic Colour: (violet)
Flower Colour: violet
Natural Flowering Period: June - July
Winter Hardiness Zones: Z4 - Z9
Foliage: ovate to elliptic, during winter until early summer reddish purple, mostly with dark stems
Growth Habit: erect / clumping
Height with Flowers: 50 cm
Spacing between Plants: 45 cm
Soil Requirements: moist / well-drained / average
Characteristics: ornamental foliage plant / groundcover
Usage: suitable for cutting / flowering pot plant
Grams per 1000 seeds: 0.90909 Gram
Seeds per Gram
(does not correspond to the number of plants!):
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): 72 / 128
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):
Sowing to Germination: 2 - 4 weeks
Germination to Transplant: 3 - 4 weeks
Transplanting to Potting: 6 - 8 weeks
Container Size(s): 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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