? Seed Treatment
- Cold Stratification:
- Place seeds in a moist paper towel or mix with moist vermiculite or peat moss.
- Seal in a plastic bag and refrigerate for 4–6 weeks at 35–40°F (1–4°C).
- Check periodically to ensure medium remains moist but not soggy.
- This mimics winter dormancy and encourages better germination.
- Soaking (Before Stratification):
- Soak seeds in lukewarm water for 12–24 hours to soften the seed coat before stratification.
? Planting Instructions
- When to Sow:
- Indoors: Start seeds 6–10 weeks before the last frost date.
- Outdoors: Direct sowing is less common but possible in late fall for natural stratification.
- Soil Requirements:
- Use a light, well-draining seed-starting mix enriched with a bit of compost.
- pH should be 6.0–7.0 (slightly acidic to neutral).
- Light Requirements:
- Bright indirect light or a grow light is ideal. Avoid intense direct sunlight for seedlings.
- Once mature, hostas prefer partial to full shade.
- Sowing Depth:
- Surface sow or plant seeds no deeper than ⅛ inch (3 mm).
- Lightly press into the soil — hosta seeds need light to germinate.
- Watering:
- Keep soil evenly moist but not soggy. Mist gently to avoid displacing seeds.
- Germination Time:
- Germination typically occurs in 14–21 days, but can take up to 30 days.
- Maintain soil temperature at 65–75°F (18–24°C) during germination.
- Spacing:
- Transplant seedlings when they have at least 2–3 sets of true leaves, spacing them 12–18 inches (30–45 cm) apart.
? Growing Tips:
- Hostas are long-lived shade-loving perennials, ideal for woodland gardens, shady borders, or containers.
- Mulch to retain moisture and suppress weeds.
- Protect young plants from slugs and snails.
- Hostas grown from seed may vary in size and leaf pattern, offering unique and beautiful foliage as they mature.