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TECHNICAL INFORMATION |
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| Life Cycle: | |
Perennial
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| Familiy, Origin: | |
Campanulaceae, Mountains Europe
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| Sitelocation: | |
Full sun - partial shade
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| Garden Height: | |
50 cm
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19,69 inch
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| Natural flowertime: | |
June - August
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| Crop Time: | |
Plug crop: 7-9 weeks; Green pots: 10-12 weeks; Flowering pots: 10-12 months, with vernalization
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| Sell Period: | |
April-May and August-October
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| Seed Form: | |
Raw Seed
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| Seed Count: | |
10417 K/g
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| Sowing Time: | |
March-May for green pots; June-August for flowering in pots the following year;
March-May for cut flower production
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| Sowing Method: | |
3-5 seeds per plug, sowing in final pot is possible
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| Germination: | |
14-30 days at 18-22 °C in media with very low soluble salt levels and pH: 5.5-6.0. Requires light for germination. Before sowing treat substrate with fungicide. Cover seed lightly with vermiculite after sowing. Keep soil slightly moist but not wet. Avoid direct sunlight by shading seeds after sowing.
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| Plug Culture: | |
From Stage II* reduce the soil moisture, the plug should not dry out and reduce the temperature to 15-18 °C. Do not let soluble salt level rise above 0,5 EC. Start fertilization at 30-50 ppm nitrogen in a well balanced formula. During Stage III and Stage IV fertilization levels can be increased up to 100-150 ppm.
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| Growing On: | |
6-8 weeks after sowing transplant 1-3 plants into a pack or pot (7-15 cm) and 3-4 plants into a container (3-5 l).Transplant the plant not too deep in pot. Plant cut flowers (frost free) in 30-40 x 30-40 cm space.
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| Media: | |
Use a well-drained, growing perennial substrate with 0-15 % clay, 0-20 % parts (e.g. bark, sand, perlite), 1-1,5 kg/m³ complete balanced fertilizer, 0-3 kg/m³ slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 5.5-6.0. Field: sandy loamy soils to loamy sandy soil, calcareous and with a good drainage. Standard fertilization: 80-100 g/m² slow release fertilizer. If necessary improve the soil with peat and keep the soil level open.
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| Photoperiod / Light: | |
Long day plant. The long day support the flower initiation while the short day support the vegetative growth. In the early three weeks of vegetative growth (in summer or in spring depending on variety) cultivate in short day (12 h, 20-30 Watt/m²) after that cultivate in long day (16-18 h). In winter additional assimilation light is required. Night interruption is possible.
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| Temperature: | |
Grow at 12-18 °C. In winter indoors frost free at 3-5 °C or outdoors. For wintering the root development in pots has to be good. In spring the plants start to grow for 7-8 weeks at 15-18 °C and long day. Cold temperatures at 10-13 °C will increase the cultivation time. A chilling period for flower initiation is required. Campanula can also be made to flower three weeks in the poly tunnel earlier.
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| Fertilization: | |
Moderate-high fertilization levels are required. Fertilize the crop weekly with 100-150 ppm nitrogen (at 3 kg/m³ slow release fertilizer in substrate), using a complete balanced fertilizer. Avoid high ammonium and high nitrogen levels. Don't fertilize after mid September. In spring fertilize with 100-150 ppm nitrogen of a potassium balanced fertilizer (N: K2O-ratio: 1:1,5). Prevent magnesium deficiency by applying magnesium sulphate (0,025 %) 1-2 times and in case of iron deficiency apply iron-chelate for 1-2 times. Field: If necessary according to analysis, improve the soil with 80-100 g/m² slow release fertilizer per year, applied in several portions. N min soil value: approximately 130 g/m².
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| Cut Flowers: | |
Cut flower stems can be harvested, when several flowers are open. Put the stems in warm water immediately. After two day remove faded flowers. Vase life: 4-7 days. Cold storage is possible.
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| Cultural Hints: | |
Do not cultivate the plants for pot plant and cut flower production too wet or too dry.
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