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N1451 - HELICHRYSUM BRACTEATUM, STRAWFLOWER
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'Bikini® Hot'
Glowing red
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TECHNICAL INFORMATION |
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| Life Cycle: | |
Annual
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| Familiy, Origin: | |
Asteraceae, Australia
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| Sitelocation: | |
Sun
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| Garden Height: | |
30 cm
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11,81 inch
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| Crop Time: | |
9-10 weeks
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| Sell Period: | |
young plants May, cut flowers July
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| Seed Form: | |
Raw
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| Seed Count: | |
1887 K/g
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| Sowing Method: | |
1-3 seeds per plug, can be multiple sown directly into pots or packs
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| Germination: | |
7-10 days at 20-24 °C, in media with low soluble salt levels and pH: 5.8-6.5. Cover seed with vermiculite, sand or substrate after sowing. Keep soil slightly moist but not wet.
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| Plug Culture: | |
From Stage II* reduce the moisture, but the plug should not dry out. Do not let soluble salt level rise above 0,5 EC. The roots are sensitive to high salt levels in substrates. Start fertilization at 50 ppm nitrogen in a well balanced formula. During Stage III and Stage IV fertilization levels can be increased up to 150-200 ppm.
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| Growing On: | |
2-4 weeks after sowing transplant 1 plants per pot (8-10 cm) and 2-3 plants into a bigger pot (11-15 cm) or into a container (3-5 l).
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| Media: | |
Use a well-drained, growing substrate with 15-30 % clay, 0-15 % parts (e.g. perlite, coconut fibres), 1-3 kg/m³ complete balanced fertilizer, 0-3 kg/m³ slow release fertilizer (3-6 months), iron-chelate, micronutrients, pH: 5.8-6.5.
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| Temperature: | |
Grow at 16-18 °C, later decrease the temperature to 13-16 °C when the roots development in pots should be very good. This promotes a compact plant growth, full flowering and a beautiful coloring, but increase the cultivation time by 1-2 weeks. To harden the plants for early selling temperatures can be decreased to 10-12 °C. Helichrysum does not tolerate frost.
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| Fertilization: | |
Low-moderate fertilization levels are required. Fertilize the crop weekly with 150-200 ppm nitrogen (at 0 kg/m³ slow release fertilizer in substrate), using a complete balanced fertilizer. Avoid high ammonium and high nitrogen levels. Very high nitrogen levels in substrate cause shoot stretching and the shoots fall apart. Avoid pH above 6.0, as high pH causes iron deficiency. Apply chelated iron, if chlorosis becomes a problem. To prevent magnesium deficiency, apply magnesium sulphate (0,025 %) 1-2 times.
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| Cultural Hints: | |
Low light intensity combined with short day and warm night temperatures will inhibit and delay the flowering. Wetness and high salt level in substrate can be a cause for yellow leave edges. This may develop later to necrosis at a later stage. Remove plant tops after transplanting for a better branching and compact growth.
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All colors
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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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