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Allium (Species) Purple Flowered Onion in the GardenTags plant encyclopedia

Allium atropurpureum syn. Allium nigrum var. atropurpureum

 

Allium (Species) Purple Flowered Onion

Allium atropurpureum is a species of allium which has deep red-purple flowers held on upright stems and heads shaped like a half sphere which face upwards. The centre of each flower is a dark purple-blueberry colour. Flowers early summer, and grows up to 75cm tall.

Contributed by @richard.spicer.7906

 
plant Features
  • Allium (Species) Purple Flowered Onion likes full sun

    Full sun

  • Allium (Species) Purple Flowered Onion likes occasional watering

    Occasional watering

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

    Full Frost Hardy: 5F (-15°C)

  • Allium (Species) Purple Flowered Onion likes free draining and fertile

    Free draining and fertile

 
plant information

Common name

Allium (Species) Purple Flowered Onion

Latin name

Allium atropurpureum syn. Allium nigrum var. atropurpureum

type

Bulb

family

Amaryllidaceae

ph

5.0 - 7.0 Acid - Neutral

  • Light

    Allium (Species) Purple Flowered Onion likes full sun

    Full sun

  • Frost

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

    Full Frost Hardy: 5F (-15°C)

  • Soil

    Allium (Species) Purple Flowered Onion likes free draining and fertile

    Free draining and fertile

  • Water

    Allium (Species) Purple Flowered 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) Purple Flowered Onion is 0.15meters x 0.75meters 0.15 M 0.75 M

Allium atropurpureum syn. Allium nigrum var. atropurpureum

Allium atropurpureum is a species of allium which has deep red-purple flowers held on upright stems and heads shaped like a half sphere which face upwards. The centre of each flower is a dark purple-blueberry colour. Flowers early summer, and grows up to 75cm tall.


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.

 

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.

 

Flowering Season

From Early Summer TO Mid Summer

Most allium varieties flower from early to mid-summer.

 

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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