Allium × proliferum

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  RHS Plants for Pollinators plants

  This plant will provide nectar and pollen for bees and the many other types of pollinating insects.

  It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.

  • Garden Plants
  • Wildflowers
  • Plants of the World

Cultivation

Grow in fertile, moisture retentive, but well-drained soil in full sun. Consider liming if the soil is acid, pH below 6.5. Harvest as spring onions in spring or let to gow into shallot-size onions. Prone to spreading if bulbils not removed

Propagation

Propagate by planting sets of bulbils in the autumn or in spring

Suggested planting locations and garden types

• Cottage and informal garden
• Patio and container plants
• Wildlife gardens
• Cut flowers
• Flower borders and beds

Pruning

Remove bulbils from the top of the flower stem for culinary porposes and to reduce spread around the garden. Prune back once the foliage has died down

Pests

May be susceptible to onion fly, leek moth and narcissus eelworm

Diseases

May be susceptible to onion white rot, onion downy mildew, leek rust and onion neck rot. Bolting, producing flowers, may be a problem