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N7310 - INCARVILLEA DELAVAYI, HARDY GLOXINIA
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'Incarvillea delavayi'
Gloxinia-type flowers sized 5-7 cm, purple pink with yellow throat. Most of the deep green basal leaves appear after flowering.
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TECHNICAL INFORMATION |
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| Life Cycle: | |
Perennial
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| Familiy, Origin: | |
Bignoniaceae, China
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| Sitelocation: | |
Full sun - partial shade
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| Garden Height: | |
38 cm
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14,96 inch
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| Natural flowertime: | |
June - July
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| Crop Time: | |
Plug crop: 4-6 weeks; Green pots: 12-14 weeks; Flowering pots: 8-10 months, including vernalization; Cut flower production: 2-3 years
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| Seed Form: | |
Raw Seed
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| Seed Count: | |
235 K/g
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| Sowing Time: | |
January-March for green pots, June-August for flowering in pots the following year
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| Sowing Method: | |
2-3 seeds per plug
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| Germination: | |
4-8 days at 21-24 °C, in media with low soluble salt levels and pH: 4.5-6.5. 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 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 to 100 ppm.
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| Growing On: | |
2-4 weeks after sowing transplant 1-3 plants into a pot (8-15 cm) and 3-4 plants into a container (3-5 l). Plant cut flowers (frost free) in 25x30 cm space. Protect the young plants with a fleece cover against night frost.
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| Media: | |
Use a well-drained, growing perennial substrate with 0-15 % clay, 0-15 % parts (e.g. perlite, sand, bark, compost), 1-1,5 kg/m³ complete balanced fertilizer, 1-2 kg/m³ slow release fertilizer (3-9 months), iron-chelate, micronutrients, pH: 4.5-6.5.
Field: sandy humus soils with good drainage. Standard fertilization: 50-80 g/m² of a slow release fertilizer.
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| Photoperiod / Light: | |
Long day plant. The long day (12-14 h) supports the flower initiation and flower development. In winter and early spring additional assimilation light is required.
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| Temperature: | |
Grow at 10-16 °C or outdoors. In winter indoors frost free at 3-5 °C or outdoors. Outdoor fleece cover or mulch cover needed. Protect the roots carefully in winter with cover against drying. If the roots not dried out, plant will tolerate temperatures down to 15 °C. In spring the plants start to grow for 12-13 weeks at 7-12 °C. A chilling period (vernalization) for flower initiation is required.
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| Fertilization: | |
Low-moderate fertilization levels are required. Fertilize the crop weekly with 80-100 ppm nitrogen (at 2 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 80-100 ppm nitrogen of a complete balanced fertilizer. 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 for 1-2 times.
Field: If necessary according to analysis, improve the soil with 50-80 g/m² slow release fertilizer, applied in several portions.
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| Cultural Hints: | |
The plants form a tuberous root. The root growing underneath the soil surface and can dry out very quickly. Take care of a constant water supply, but avoid over watering. The roots are sensitive to very wet substrates or soils. Protect the plant roots in winter against frost.
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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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