Seed Treatment
Stratify seeds before sowing. Mix seeds with damp sand or peat and place in a sealed plastic bag. You can also use the paper towel method.
Cold Stratification
Refrigerate for 28–42 days at 35–40°F (2–5°C).
If seedlings begin to emerge during this time, remove them from the bag and plant immediately.
Optimum Germination Temperature
Keep at 65–70°F (18–21°C) after stratification for best results.
Maximum Germination Time: Allow up to 60 days for germination.
Light Requirements
Sow on the surface or lightly cover with soil. Needs light to germinate, so do not bury deeply.
Post-Germination Care
- Transplant when seedlings are large enough to handle.
- Grow in moist, well-drained soil.
- Prefers partial shade to full sun.
- Protect young plants from frost until established.
Plant Spacing & Height
Space 18–24 in (45–60 cm) apart. Mature plants grow up to 6 ft (1.8 m) tall.
Sowing Season
- Indoors: Late winter to early spring
- Outdoors: Fall sowing is also effective (natural stratification)
Watering
Keep consistently moist but not waterlogged.