IV-V, Z5-8, 30 cm;
brilliant red flowers, narrow leaved rosettes.
Family: Primulaceae
Origin: China and Japan
History: Named in honor of Karl Ivanovich Maximowicz (1827-1891) - botanist, plant collector and Director of the Herbarium at the St. Petersburg Botanical Garden
Colour: Umbels of bright red flowers
Natural Flowering Period: April - May
Winter Hardiness Zones: Z5-8
Growth Habit: Clumping
Foliage: Oblong to elliptic leaves
Height with Flowers: 30 cm
Spacing between Plants: 30 cm
Soil Requirements: Evenly, moist peat soils, pH 5.5 - 6.4
Location: Partial shade
Use: Plant in moist, peat soils at the edge of the woodland with Dodecatheon meadia f. album, Gaultheria shallon and Tiarella polyphylla "Filigran"
Cultural Tips:
Grams per 1000 Seeds: 0,263
Seeds per Gram: 3800
Seeding Recommendation: 0,5 g / 1000 plants
Sowing Rate: 2 seeds per cell
Plug tray recommended size(s): 72 or open flats
Germination: These seeds germinate rapidly depending on species and origin. If germination does not occur after 3-4 weeks a cooling period of 2-4 weeks is recommended.
Scheduling:
Best Sowing Dates: November - March
Sowing to Germination: 6 - 8 weeks
Germination to Transplant: 4 - 6 weeks
Transplanting to Salable Plant: 6 - 8 weeks
Cutting-Back at Transplanting: Not necessary
Growing On:
Container Size(s): 1 plug per 8/9 cm; 1-2 plugs per 11/12 cm
Vernalization: A prudent recommendation would be to provide 6-12 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).