Seed Treatment
- Cold Stratification:
- Mix seeds with moist sand or peat moss in a sealed bag.
- Store in the refrigerator (34–40°F / 1–4°C) for 4–6 weeks before sowing.
Check weekly: If seedlings sprout in the fridge, remove them gently and plant immediately.
Sowing Instructions
Indoor Sowing (Recommended)
- Timing: Start seeds 8–10 weeks before the last frost.
- Containers & Soil: Use a well-draining seed-starting mix in trays or pots.
- Sowing Depth: Surface sow the seeds—do not cover them, as they need light to germinate.
- Watering: Keep soil evenly moist but not soggy.
- Light & Temperature: Provide bright indirect light and keep at 65–75°F (18–24°C).
- Germination Time: 3–8 weeks.
Outdoor Sowing (Optional)
- Timing: Sow in fall or early spring to allow natural stratification.
- Location: Choose a partially shaded to full shade area with well-draining, humus-rich soil.
- Sowing Depth: Surface sow and press seeds lightly into the soil.
- Moisture: Keep soil consistently moist until germination.
Growth & Care
- Watering: Keep soil evenly moist but not waterlogged.
- Soil Preference: Prefers rich, well-draining soil with a pH of 5.5–7.0.
- Spacing: Thin seedlings to 12–18 inches apart.
- Light Requirements: Thrives in partial shade to full shade.
- Mature Size: Grows 12–18 inches (30–45 cm) tall with colorful foliage.
Heuchera americana is a low-maintenance perennial known for its ornamental leaves and delicate flowers, making it a perfect choice for shade gardens, borders, and containers!