Cultural Hints:Planting in well-drained, calcareous soils and sunny location. The roots are very sensitive to wet substrates.
Familiy, Origin:Brassicaceae, Europe, Africa, Asia Minor
Garden Height:30 cm.11,81 inch
Natural flowertime:April - May
Crop Time:Plug crop: 4 weeks; Green pots: 6-8 weeks; Flowering pots: 7-10 months, with vernalization
Seed Form:Raw Seed
Seed Count:500 K/g
Sowing Method:3-5 seeds per plug, can be multiple sown directly into pots or packs
Germination:10-14 days at 18-20 ˇăC in media with very low soluble salt levels and pH: 6.0-6.5. Cover seed lightly with vermiculite after sowing. Keep soil slightly moist but not wet
Plug Culture:From Stage II* reduce the soil moisture, but the plug should not dry out and reduce the temperature to 16-18 ˇăC. Do not let soluble salt level rise above 0,50 EC. Start fertilization at 50 ppm nitrogen in a well balanced formula. During Stage III and Stage IV fertilization levels can be increased to 80-100 ppm.
Growing On:6-8 weeks after sowing transplant 3-5 plants into a pack or pot (7-13 cm).
Media:Use a well-drained, growing perennial substrate with 0-15 % clay, 0-15 % organic parts (e.g. wood fibres, bark), 1-1,5 kg/m3 complete balanced fertilizer, 0-2 kg/m3 slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 6.0-6.5.
Photoperiod / Light:Day length neutral plants. Start in spring with supplemental lighting when the temperature rises above 15 ˇăC for good plant quality.
Temperature:Grow at 12-15 ˇăC. In winter indoors frost free at 3-5 ˇăC or outdoors. For the vernalization 8-10 weeks are needed. In spring the plants start to grow (from week 51 possible) for 8-10 weeks at 10-15 ˇăC or for 5-6 weeks at 15-18 ˇăC.
Fertilization:Low fertilization levels are required. Fertilize the crop weekly with 80-100 ppm nitrogen (at 2 kg/m3 slow release fertilizer in substrate), using a potassium balanced fertilizer (N: K2O-ratio: 1:1,5). Avoid high ammonium and high nitrogen levels. Don't fertilize after mid September. In spring fertilize with 100-130 ppm nitrogen of a complete balanced fertilizer.