Seed Treatment (Pre-Planting Preparation)
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Cold Stratification:
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Mix seeds with moist sand or a damp paper towel.
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Place them in a sealed plastic bag and refrigerate at 40°F (4°C) for 2–4 weeks.
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Check regularly to ensure they remain moist but not soggy.
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Light Requirement for Germination:
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Seeds require light to germinate, so do not cover them deeply with soil.
Planting Instructions
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Best Planting Time:
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Spring or early fall for outdoor sowing.
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Indoors: Start 6–8 weeks before the last frost.
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Soil Requirements:
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Well-draining, moist, rich soil with a pH of 6.0–7.5.
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A mix of loamy soil and compost works well.
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Sunlight:
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Prefers partial shade to full sun (thrives in cooler conditions).
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Planting Depth:
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Surface sow – press seeds lightly into the soil, but do not cover.
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Spacing:
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6–12 inches (15–30 cm) apart for proper airflow.
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Watering:
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Keep soil consistently moist but not soggy.
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Use a gentle misting spray to prevent disturbing the seeds.
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Temperature for Germination:
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60–70°F (15–21°C).
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Germination Time:
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7–21 days.
Care After Germination
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Thinning: Once seedlings develop two sets of true leaves, space them 6–12 inches apart.
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Fertilization: Apply a balanced liquid fertilizer every 4–6 weeks during active growth.
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Mulching: A light layer of organic mulch helps retain moisture and suppress weeds.
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Deadheading: Remove spent flowers to prolong blooming.
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Winter Care: In cold regions, Myosotis alpestris sylvatica self-seeds and can return each year.