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Allium (Species) Spiral Onion in the GardenTags plant encyclopedia

Allium senescens subsp. glaucum

 

Allium (Species) Spiral Onion

Allium plants chosen for garden cultivation have terminal umbels of brightly coloured flowers, are hardy and easy to grow. The foliage varies from the rolled-round leaves of garden onions and chives to the broad, oval leaves of wild garlic. Most species have a typical onion smell. Alliums do best in well drained soil, open to the sun. Some dwarf species can be grown as pot plants if kept in a cold greenhouse or frame until nearly in flower. Allium senescens subsp. glaucum has fragrant lavender-coloured flowers from mid to late Summer

Contributed by @tiggrx

 
plant Features
  • Allium (Species) Spiral Onion likes full sun

    Full sun

  • Allium (Species) Spiral Onion likes occasional watering

    Occasional watering

  • Allium (Species) Spiral Onion is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Allium (Species) Spiral Onion likes free draining and fertile

    Free draining and fertile

 
plant information

Common name

Allium (Species) Spiral Onion

Latin name

Allium senescens subsp. glaucum

type

Bulb

family

Amaryllidaceae

ph

5.0 - 7.0 Acid - Neutral

  • Light

    Allium (Species) Spiral Onion likes full sun

    Full sun

  • Frost

    Allium (Species) Spiral Onion is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Soil

    Allium (Species) Spiral Onion likes free draining and fertile

    Free draining and fertile

  • Water

    Allium (Species) Spiral Onion likes occasional watering

    Occasional watering

Plant & bloom calendar

  •  
    Best time to plant
  •  
    When the plant will bloom

full grown dimensions

The size of a fully grown Allium (Species) Spiral Onion is 0.30meters x 0.30meters 0.30 M 0.30 M

Allium senescens subsp. glaucum

Allium plants chosen for garden cultivation have terminal umbels of brightly coloured flowers, are hardy and easy to grow. The foliage varies from the rolled-round leaves of garden onions and chives to the broad, oval leaves of wild garlic. Most species have a typical onion smell. Alliums do best in well drained soil, open to the sun. Some dwarf species can be grown as pot plants if kept in a cold greenhouse or frame until nearly in flower. Allium senescens subsp. glaucum has fragrant lavender-coloured flowers from mid to late Summer


Planting

From Early Autumn TO Mid Autumn

Alliums do best in well drained soil in full sun. Plant smaller types among alpine plants, the others, between low growing shrubs or herbaceous plants. Plant in mid to late autumn covering the bulbs to 3 or 4 times their own depth and leave untouched for several years until the clumps are so thick that flowering is stifled, and then divide the clumps.

 

Flowering Season

From Early Summer TO Mid Summer

Most allium varieties flower from early to mid-summer.

 

Propagation by division.

From Early Spring TO Late Autumn

Species which multiply rapidly can be split in the autumn or as growth starts in the spring.. Replant both spring and autumn-divided plants immediately and keep the soil moist.

 

Propagating by offsets

From Early Autumn TO Mid Autumn

Alliums very often produce off-sets - little immature bulbs at the side of the bulb. In Autumn the bulb can be lifted and the offsets gently removed and replanted.

 
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