Id-Code: PA 234
Family: Scrophulariaceae
Origin: Complex hybrid between Mexican and American species
Special Features: Abundant blooms and first-year flowering
History: Introduced by JELITTO PERENNIAL SEEDS in 2006
Distinction: Award from the ISU (International Hardy Plant Society)
Colour: Tubular purple flowers with white throats
Natural Flowering Period: June - September
Winter Hardiness Zones: Z5-8
Growth Habit: Upright
Foliage: Narrow glossy leaves
Height with Flowers: 50 cm (20'')
Spacing between Plants: 50 cm (20'')
Soil Requirements: Well-drained garden soils; 5.8 - 7.2 pH
Location: Full sun
Use: The Sunburst series are great for retail sales and landscape use - rock garden, planters, or sweeeping drifts in the border
Specialities: First year flowering. Requires little maintenance
Cultural Tips:
Scheduling:
Growing On:
Grams per 1000 Seeds: 0,5
Seeds per Gram: 2000
Seeding Recommendation: 1 g / 1000 plants
Sowing Rate: 2 seeds per cell
Plug tray recommended size(s): 72, 128, or 288
Germination: Rapidly germinating, keep seed in constant moisture (not wet) with temperatures of about +20°C [68°F]. Do not cover the seed but tightly press into the earth. Keep in cooler conditions after germination occurs. The germination might be slower and more irregular. This poses no problems.
Best Sowing Dates: November - March
Sowing to Germination: 2 - 4 weeks
Germination to Transplant: 4 - 8 weeks
Transplanting to Salable Plant: 6 - 10 weeks
Cutting-Back at Transplanting: Cut-back at transplanting to keep more compact
Container Size(s): 1 plug per 8/9 cm (4 1/2''); 1-2 plugs per 15 cm (6'')
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 40°F (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 60° - 65°F (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)