Jacob's Ladder "Purple Rain Strain"

Jacob's Ladder "Purple Rain Strain" - Polemonium yezoense.
Perennial from the Polemoniaceae family.
Origin: Northern Japan, Hokkaido (open rain forests, roadsides in the mountains).
Features: very attractive red-purple feathery foliage from spring to early summer. Re-blooms after wilting.
Flower colour: large violet blossoms.
Foliage: reddish-purple ovate to elliptic leaflets.
Natural flowering period: June - July.
Flowering plant height: 50 cm.
Distance between plants: 45 cm.
Winter hardiness zones: Z4 - Z9.
Soil Requirements: moist, well-drained, medium fertility.
Usage: suitable for cutting and as a pot plant.
Soil Requirements: Well-drained but moisture-retentive soils; 5.5 - 6.5 pH
Location: sun to partial shade (especially in warmer summers)
The colourful and attractively shaped leaves blend beautifully with Aquilegia "Leprechaun Gold", Codonopsis clematidea and Stachys "Silky Fleece"
Specialities: the foliage combines beautifully with other leaf and flower colours.
Cultural Tips:
Seeds per Gram: 800-1100 seeds.
Seeding Recommendation: 3 g / 1000 plants
Sowing Rate: 2-3 seeds per cell
Plug tray recommended size(s): 72 or 128
Germination: rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C. Seeds must be covered thinly. Keep in cooler conditions after germination occurs. The germination might be slower and more irregular. This poses no problems.
Scheduling:
Best Sowing Dates: anytime.
Sowing to Germination: 2 - 4 weeks.
Germination to Transplant: 3 - 4 weeks.

Bot. syn.: Polemonium caeruleum ssp. yezoense.