Seed Treatment
- SOAK seeds in warm water for 2–4 hours.
Sowing Instructions
- When to Sow:
- Indoors: Start seeds 6–8 weeks before your last expected frost date.
- Outdoors: Direct sow only after all danger of frost has passed and the soil is warm (mid to late spring).
- Soil Requirements:
- Prefers well-draining, fertile soil rich in organic matter.
- Ideal soil pH: 6.0–7.5.
- Light Requirements:
- Requires full sun (6+ hours of direct sunlight daily) for strong growth and abundant blooms.
- Sowing Depth:
- Sow seeds ¼ inch (6 mm) deep.
- Lightly cover with soil and gently firm.
- Watering:
- Keep the soil evenly moist but not soggy during germination.
- Water seedlings at the base once established to avoid fungal issues.
- Germination Time:
- Germination typically occurs in 7–14 days at a temperature of 70–75°F (21–24°C).
- Spacing:
- Once seedlings are 2–3 inches tall, thin or transplant to 12–18 inches (30–45 cm) apart.
- Dahlia plants grow bushy and need good airflow to prevent mildew.
Growing Tips
- Dahlia variabilis produces vibrant, daisy-like flowers in many colors, ideal for cut flower gardens, borders, and beds.
- Seed-grown dahlias bloom in the first season, unlike tuber-grown varieties.
- Deadhead spent blooms regularly to encourage continuous flowering.
- In cold climates, you can dig up and store tubers formed from seed-grown plants at the end of the season.
- Fertilize monthly with a balanced fertilizer once plants are established.
Grow brilliant blooms from seed and enjoy a summer full of color and pollinators!