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Planting Instructions for Aster from Seed:
- Start Indoors: Sow Todd’s Seeds Aster seeds indoors 6–8 weeks before the last expected frost. Use trays or pots with a quality seed-starting mix.
- Cold Stratification (Optional): For improved germination, refrigerate seeds in a damp paper towel inside a plastic bag for 1–2 weeks before planting.
- Planting Depth: Sow seeds ⅛ inch deep. Press gently into the soil without covering heavily, as some light helps germination.
- Temperature: Maintain soil temperature at 65–70°F for best results.
- Germination: Seeds typically germinate in 7–14 days. Provide bright light to prevent leggy growth.
- Transplanting: Harden off seedlings and transplant outdoors after the danger of frost has passed.
- Soil and Location: Choose a location with full sun to part shade and well-draining, moderately rich soil. Ideal pH is 6.0–7.0.
- Spacing: Space plants 12–18 inches apart, depending on variety.
- Watering: Water regularly to keep soil evenly moist, especially during dry periods, but avoid overwatering.
- Maintenance: Deadhead spent blooms to encourage more flowers. Mulch to retain moisture and suppress weeds.
- Bloom Time: Asters typically bloom late summer to fall, providing color when many other flowers are fading.