Optimum Planting Time: September – November
Flowers: May - June
Where to plant
A member of the Allium family, Nectaroscordium will flourish in a sunny or shady
spot in any fertile, well-drained soil.
How to plant in the ground
1. Nectaroscordium look spectacular in late spring borders, with their tall flowerheads soaring
above lower growing plants.
2. If on heavy clay soil, dig in a good compost with added horticultural grit to aid drainage and
avoid bulb rot.
3. Plant bulbs with the pointed end up at a depth of 15cm in the soil and approximately 25cm
apart in in sun or part shade.
4. For the best impact, plant in groups for a great visual display with other allium varieties.
How to grow in containers
1. Place crocks in the bottom of a deep container with drainage holes to avoid waterlogging
2. Add about 10cm of potting compost and place the bulbs so that they’re not touching the
outside pot or each other.
3. Cover with another 20cm of potting compost, water well so the soil around the bulbs settle.
4. Ensure the soil is kept moist but not too wet and protect from frost by placing in a sheltered
1. After planting your bulbs, feed with a general-purpose feed with high potassium for
optimum growth and flowering.
2. Water well after planting, saturating the soil around the bulbs.
3. Don’t cut or clear away the old foliage after flowering as this is needed to photosynthesise
and feed the bulb for next year, let it die back naturally.
4. If older plants are becoming overcrowded you can lift, divide, and replant allium bulbs after
the foliage and flowers have died down.
Pests and Diseases
Watch out for onion white rot, downy mildew, and onion fly. If any of these occur, cut off and
dispose of infected leaves and remove and destroy severely affected plants.