Red valerian "Crimson Night" (Pretty betsy, Bouncing bess, Jupiter's beard)

Red valerian "Crimson Night" - Centranthus ruber var. coccineus = Valeriana coccinea.
A unique, interesting perennial, characterized by abundant and long flowering. Long flowering and cold hardy.
In addition to sunny flower beds, it is suitable for planting on dry slopes, in rock gardens, on stone retaining walls, along the edges of the stone, on sunny steps, in roof gardens and in plantings between tiles of paved paths and platforms.
Its openwork and at the same time quite clearly defined numerous inflorescences of bright raspberry-red colour are perfectly combined with many perennial flower crops.

Family: Valerianaceae.
Origin: Europe, North Africa to Asia
Special Features: Charming old fashioned perennial with clusters of bright red flowers and grey-green foliage
Colour: Bright red
Natural Flowering Period: May - August
Winter Hardiness Zones: 
Growth Habit: Upright 
Foliage: Sessile grey-green leaves 
Height with Flowers: 60 cm 
Spacing between Plants: 45 cm 
Soil Requirements: Well-drained alkaline soils, pH 6.8 - 7.8
Location: Full Sun 
Use: Naturalize with other easy perennials like Agastache rugosa "Alba", Asclepias curassavica and Cerinthe major "Purpurascens" 
Specialities: Cut flower candidate and first year flowering.

Cultural Tips:
Grams per 1000 Seeds: 2,222
Seeds per Gram: 450
Seeding Recommendation: 5 g / 1000 plants
Sowing Rate: 2 seeds per cell 
Plug tray recommended size(s): 128 or 288 
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 - 3 weeks 
Germination to Transplant: 4 - 6 weeks
Transplanting to Salable Plant: 6 - 8 weeks
Cutting-Back at Transplanting: Cut-back 1-2 times; once at transplanting; once again 4 weeks later to keep more compact

Growing On:
Container Size(s): 1-2 plugs per 11/12 cm ; 2-3 plugs per 15 cm.
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 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 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.
Fertilization: Medium (150-200 ppm).

Red valerian, bouncing bess, bovisand soldier, delicate bess, drunken sailor, Jupiter's beard, pink valerian, pretty betsy, red-spur valerian. Bot. syn.: Kentranthus ruber (L.), Valeriana coccinea hort., Valeriana rubra L.