For optimal germination rates, initiate propagation indoors under controlled conditions—unless the species exhibits a high sensitivity to root disturbance. This approach allows precise regulation of temperature, humidity, and light, improving germination consistency and seedling viability. Do not skip any recommended seed treatments, as they are essential for uniform and successful germination.
Pre-Planting Preparation
Soak bulbs in room-temperature water for 6 to 12 hours before planting
When to Plant
- Outdoors: In spring, after all danger of frost has passed
- Indoors: Anytime of year
How to Plant Bulbs
- Depth: Plant 1–2 inches (2.5–5 cm) deep depending on the size of the bulb, with the pointed side facing up
- Plant so that the very tip of the bulb is just peeking out above the soil surface — don’t bury it completely.
- Spacing: 7–12 cm (3–5 inches) apart
- Soil: Use a well-draining potting mix enriched with compost or perlite. Avoid soggy soils.
Light Conditions: Use grow lights to maintain 12–16 hours of light per day.
Watering
Water lightly after planting. Keep soil slightly moist, not wet. Allow the top layer to dry between waterings. Overwatering may cause bulb rot.
Temperature for Best Growth: Use a heat mat to maintain a steady temperature of 20–22°C (68–72°F)
Growth Time
Shoots typically emerge within 14–45 days, depending on conditions.
Post-Germination Care
- Final Spacing: 10–15 cm (4–6 in) if transplanting
- Mature Height: 15–30 cm (6–12 in)
- Type: Tender perennial (zones 7–10); grow as an annual or overwinter indoors in colder zones
- Suitable for containers, windowsills, or shaded garden beds
Growing Tips
- Foliage folds up at night — this is normal!
- Reduce watering and allow leaves to die back in fall/winter (dormancy). Resume in spring.
- Fertilize monthly during active growth with a balanced liquid fertilizer
- Dig up bulbs before frost and store dry in a cool place, or grow year-round indoors