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N7450 - INULA ENSIFOLIA, SWORDLEAF INULA
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'Inula ensifolia'
Clump-forming perennial producing golden yellow flowers, first year flowering.
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TECHNICAL INFORMATION |
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| Life Cycle: | |
Perennial / first year flowering
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| Familiy, Origin: | |
Asteraceae, East-Europe, Caucasus, Turkey
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| Sitelocation: | |
Full sun - partial shade
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| Garden Height: | |
30 cm
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11,81 inch
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| Flower Size: | |
5 cm
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1,97 inch
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| Natural flowertime: | |
July - September
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| Crop Time: | |
Plug crop: 6 weeks; Green pots: 10-12 weeks; Flowering pots: 20-24 weeks, annual production is possible; Flowering pots: 10-12 months, including wintering
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| Sell Period: | |
August-October
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| Seed Form: | |
Raw Seed
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| Seed Count: | |
2222 K/g
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| Sowing Time: | |
February-March for flowering in pots from July onwards, July-August for flowering in pots the following year
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| Sowing Method: | |
1-3 seeds per plug
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| Germination: | |
20-30 days at 20-25 °C, in media with very low soluble salt levels and pH: 6.0-7.5. Cover seed with vermiculite, sand or substrate after sowing. Keep soil slightly moist but not wet. The plant roots are very sensitive to wetness.
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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 18 °C. Do not let soluble salt level rise above 0,5 EC. Start fertilization at 50 ppm nitrogen in a well balanced formula. During Stage III and Stage IV fertilization levels can be increased to 150 ppm.
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| Growing On: | |
4-6 weeks after sowing transplant 1 plant into a pot (8-10 cm) or packs. For flowering pot production ensure good pot size, to encourage root growth, thus improving plant quality.
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| Media: | |
Use a well-drained, growing perennial substrate with 0-15 % clay, 0-15 % organic parts (e.g. bark, wood fibres),1-1,5 kg/m³ of a complete balanced fertilizer, 0-2 kg/m³ of a slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 6.0-7.5.
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| Photoperiod / Light: | |
Long day plants. The long day (14 h) supports the flower initiation and flower development. In winter and early spring additional assimilation light (3000-4000 lx) is required.
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| Temperature: | |
Grow at 10-15 °C or outdoors. In winter indoors frost free at 3-5 °C or outdoors. Outdoor fleece cover needed. In spring the plants start to grow for 10 weeks at 15-18 °C. Cold temperatures at 10-15 °C will increase the cultivation time. A chilling period (vernalization) for flower initiation is not required.
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| Fertilization: | |
Moderate fertilization levels are required. Fertilize the crop weekly with 100-150 ppm nitrogen (at 2 kg/m³ slow release fertilizer in substrate), using alternating a calcium nitrate fertilizer and 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 100-150 ppm nitrogen of a complete balanced fertilizer. 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.
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| Cultural Hints: | |
The roots are sensitive to wet substrates. Avoid to over watering and take care of a good drainage outdoors. Inula need a warm and sunny location. Protect the plants outdoors against wind.
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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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