When to plant
Plant Crinum bulbs in late spring or early summer once the soil has warmed. They are slow to establish but long-lived, so choose the site carefully. In mild climates they can also be planted in early autumn.
Where to plant
Choose a sunny, warm and sheltered spot. Crinum thrive in full sun but will tolerate very light shade. Ideal locations include south-facing borders, near walls that radiate heat, or in well-drained raised beds. They also grow well near ponds or damp areas if the soil is not waterlogged.
Preparing the soil
Loosen soil to at least 25–30 cm and enrich with compost or well-rotted manure. Crinum prefer fertile, moisture-retentive but well-drained soil. In sandy soil, add compost; in heavy clay, mix in grit to improve drainage. Good drainage is essential to prevent bulb rot.
Preparing the bulbs
Inspect bulbs and remove any loose papery layers or damaged areas. If bulbs appear slightly dehydrated, soak the base (not the entire bulb) in lukewarm water for 1 hour to reactivate roots.
Planting the bulbs
Plant Crinum bulbs with the neck slightly above soil level, not completely buried. Space bulbs at least 40–60 cm apart, as they grow large over time. Firm the soil gently and water thoroughly to settle the roots.
After planting
Water regularly during the first growing season to help establish strong roots. Keep the soil moist but not wet. Apply a mulch of compost around (but not touching) the bulb neck to retain moisture.
During growth
Crinum enjoy consistent moisture, especially during hot summer periods. Feed once or twice during the season with a balanced fertilizer. Remove spent flowers but keep the foliage, as it fuels the bulb for next year’s blooms.
After flowering
Cut back the flower stalk but leave the leaves intact until they die back naturally. In colder climates, protect bulbs in winter with a thick mulch or lift and store them in a frost-free place if winters are severe.
Extra tips
Crinum take time to settle—sometimes 1–2 seasons before blooming heavily. Avoid disturbing them once planted. In warm climates, they can grow into impressive clumps; divide only when necessary. Their striking flowers are excellent for adding tropical character to sunny borders.
