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- NOBLESSA - Achillea Ptarmica
NOBLESSA - Achillea Ptarmica
right white, fully double flowers over deep green foliage
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Uses: Perennial, first year flowering. Pot plant for sales from May onwards, for use in containers, borders, and perennial gardens.
Exposure: Sun
Garden height: 12″ / 30 cm
Crop time: 11-13 weeks
Sow time: February-April for flowering in May-July, September for flowering in the following year
Sowing method: Multiple sow, 2-3 seeds per plug
Germination*: 10-15 days at temperatures of 65-70 °F (18-21 °C), in media with low soluble salt levels and a pH range of 5.8-6.5. Light is required for germination. Finish plugs at 60-65 °F (15-18 °C).
Growing On:Grow on at temperatures of 55-60 °F (13-15 °C). In spring, begin forcing plants at temperatures of 60-65 °F (15-18 °C).
Media:Use a friable, coarse-fibered substrate with a pH of 5.8-6.5.
Temperature:13-15 °C (55-59 °F), start ventilating at 20 °C (68 °F). Plants may be overwintered in house at 3-5 °C (37-41 °F) or in the field. For outdoor overwintering, cover with a non-woven cloth.
Fertilization:Requires high nutrient levels.