When to plant
Plant Ismene bulbs in spring once the soil has warmed, ideally after the last frost. In cooler climates, you can start bulbs in pots indoors and move them outside when temperatures rise.
Where to plant
Choose a sunny, sheltered spot with at least 5–6 hours of direct sun. Ismene grows well in borders, raised beds and containers. Avoid exposed or cold sites — warmth encourages stronger growth and flowering.
Preparing the soil
Loosen the soil to 20–25 cm and enrich it with compost or well-rotted manure. Ismene prefers fertile, well-drained soil that retains some moisture but does not stay wet. Improve clay with grit or coarse sand; improve sandy soil with organic matter.
Preparing the bulbs
Inspect bulbs and ensure they are firm and healthy. Do not soak Ismene bulbs. Handle gently — bulbs often have delicate necks and visible growing points.
Planting the bulbs
Plant bulbs 8–10 cm deep with the neck of the bulb just above soil level. Space 20–25 cm apart. In pots, plant bulbs closer together for a fuller display. Water lightly after planting.
After planting
Keep soil lightly moist while bulbs root. As shoots appear, increase watering but avoid saturation. Containers should drain very well to prevent bulb rot.
During growth
Water regularly during the growing season, especially in warm weather. Feed every 2–3 weeks with a balanced liquid fertilizer. Remove spent flowers to support continued growth, but leave the foliage to feed the bulb.
After flowering
Reduce watering gradually as the plant enters dormancy. In mild climates, bulbs can remain in the ground with a protective mulch. In colder regions, lift bulbs in late autumn, dry them and store them in a cool, frost-free location until spring.
Extra tips
Ismene bulbs love heat — planting near a sun-warmed wall improves performance. They make excellent container plants for terraces and patios. For best flowering, allow foliage to die back naturally and avoid disturbing bulbs between seasons.
