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A0450 - ACHILLEA TOMENTOSA, YARROW
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'Aurea'
yellow downy leaf
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TECHNICAL INFORMATION |
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| Life Cycle: | |
Perennial
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| Familiy, Origin: | |
Asteraceae, Europe
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| Sitelocation: | |
Full sun - partial shade
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| Garden Height: | |
20 cm
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7,87 inch
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| Natural flowertime: | |
June - August
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| Crop Time: | |
Plug crop: 4-6 weeks; Green pots: 6-8 weeks; Flowering pots: 10-12 months; Cut flower production: 3-4 years
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| Seed Form: | |
Raw Seed
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| Seed Count: | |
5882 K/g
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| Sowing Time: | |
July-August flowering End May-Early June
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| Sowing Method: | |
3-5 seeds per plug, can be multiple sown directly into pots or packs
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| Germination: | |
10-15 days at 18-21 °C in media with low soluble salt levels and pH: 5.8-6.5. Requires light for germination. Keep soil slightly moist but not wet.
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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 15-18 °C. Do not let soluble salt level rise above 0,75 EC. Start fertilization at 50-75 ppm nitrogen in a well balanced formula. During Stage III and Stage IV fertilization levels can be increased up to 100-130 ppm.
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| Growing On: | |
3-4 weeks after sowing transplant 3-5 plants into a pack or pot (10-15 cm). Plant cut flowers in 30-40 x 30-40 cm space and use nets to keep the stems upright.
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| Media: | |
Use a well-drained, growing perennial substrate with 0-15 % clay, 0-15 % organic parts (e.g. wood fibres, bark, compost), 1-1,5 kg/m³ complete balanced fertilizer, 2-3 kg/m³ slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 5.8-6.5.
Standard fertilization: 50-80 g/m² slow release fertilizer.
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| Photoperiod / Light: | |
Long day plant. Flowering: 6- 8 weeks long day (14-16 h). Cut flower production in winter and spring only with additional assimilation light.
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| Temperature: | |
Grow at 13-15 °C. In winter indoors frost free at 3-5 °C or outdoors. Outdoor fleece cover needed. In spring the plants start to grow at 15-18 °C.
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| Fertilization: | |
High fertilization levels are required. Fertilize the crop weekly with 100 -130 ppm nitrogen (at 3 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. 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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| Cut Flowers: | |
Cut flower stems can be harvested, when 75 % of the flowers are open. Vase life: 15-20 days. Cold storage is possible. During season up to 20-50 stems per plant can be harvested. For the dried flower production use only 100 % open flowers and remove the bottom leafs. To increase flower production, pinch the first flower stalk in first year.
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| Cultural Hints: | |
The roots are very sensitive to wet substrates. In the cut flower production avoid seed set. Remove dead flowers.
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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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