Seed Treatment (Stratification)
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Cold Stratification:
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Place seeds in a damp paper towel or mix them with moist sand.
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Seal them in a plastic bag and store in the refrigerator at 35–40°F (1–4°C) for 4–6 weeks.
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Check occasionally to ensure the medium remains slightly moist.
Sowing Instructions
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Timing: Start seeds indoors 6–8 weeks before the last frost, or sow directly outdoors in early spring or fall.
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Seed Depth: Press seeds lightly onto the surface of the soil; do not cover as they need light to germinate.
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Soil: Use well-draining, rich soil with good moisture retention.
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Temperature: Keep at 65–75°F (18–24°C) for germination.
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Watering: Keep soil consistently moist but not waterlogged.
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Germination Time: Expect seedlings in 2–4 weeks.
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Transplanting: Move seedlings outdoors after all danger of frost has passed, spacing them 12–18 inches (30–45 cm) apart.
Growing Tips
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Prefers full sun to partial shade.
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Water regularly, especially in dry conditions.
- Deadhead spent flowers to encourage more blooms.