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J2020 - TANACETUM PARTHENIUM, FEVERFEW, BACHELOR'S BUTTONS, FEATHERFEW, -FOIL
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'Tetrawhite'
extremely large double flowers
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TECHNICAL INFORMATION |
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| Life Cycle: | |
Annual
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| Familiy, Origin: | |
Asteraceae, Near East
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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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| Flower Size: | |
3 cm
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1,18 inch
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| Crop Time: | |
Plug crop: 6-8 weeks; Flowering pots: 14-16 weeks, depending on temperature; Cut flower production: 20-24 weeks
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| Sell Period: | |
youngplants May-June
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| Seed Form: | |
Raw Seed
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| Seed Count: | |
6061 K/g
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| Sowing Time: | |
Indoor forcing: January-June; Outdoor forcing (frost free): From April onwards
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| Sowing Method: | |
3-5 seeds per plug, can be sown directly into final pot / field
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| Germination: | |
7-12 days at 20-22 °C, in media with very low soluble salt levels and pH: 5.0-6.5. Requires light for germination. 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, but the plug should not dry out and reduce the temperature to 16-18 °C. Do not let soluble salt level rise above 0,75 EC. Start fertilization at 75 ppm nitrogen in a well balanced formula. During Stage III and Stage IV fertilization levels can be increased to 150-200 ppm.
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| Growing On: | |
4-5 weeks after sowing transplant 3 plants into a pot (8-9 cm) and 4-5 plants into a bigger pot (10-12 cm). Plant cut flowers (frost free) in 25-30 x 25-30 cm space and use nets to keep the stems upright.
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| Media: | |
Use a well-drained, growing substrate with 20-30 % clay, 1-1,5 kg/m³ complete balanced fertilizer, iron-chelate, micronutrients, pH: 5.0-6.5. Field: humus, sandy loamy soils with good drainage.
Standard fertilization: 80-100 g/m² of a slow release fertilizer. Before planting disinfect the soil.
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| Photoperiod / Light: | |
Long day plants. Keep light level high. The long day (12-16 h) and high light intensity support the flower initiation and flower development. In winter and in early spring additional assimilation light is required.
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| Temperature: | |
Grow at 16-18 °C during daytime and at 10-13 °C during night or outdoors. In pot plant production keep cold temperatures for a good compact plant habit, but this will increase the cultivation time. T. parthenium tolerate low frost temperatures, but protect just planted young plants against frost by fleece or foil.
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| Fertilization: | |
High fertilization levels are required. Fertilize the crop weekly with 200-250 ppm nitrogen, using complete balanced fertilizer. Avoid high ammonium and high nitrogen levels. When buds are visible, then use a potassium fertilizer with 200-250 ppm nitrogen (N: K2O-ratio: 1:1,5). Prevent magnesium deficiency by applying magnesium sulphate (0,05 %) 1-2 times and in case of iron deficiency (above pH 6.0) apply iron-chelate 1-2 times. Field: N min soil value: approximately 120 g/m².
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| Cut Flowers: | |
Cut flower stems can be harvested, when 70 % of the flowers are open. Remove the bottom leaves and put the stems in water immediately.
Vase life: 8-12 days. Cold storage is possible.
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| Cultural Hints: | |
Cultivate rather dry and avoid wetness. After transplanting treat the substrate with fungicide against Botrytis.
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Hint
The cultural recommendations are based on results from trials conducted under Central European conditions. Different conditions in other parts of the world may lead to deviations in results achieved.
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