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Allium 'Round and Purple' (Allium 'Round and Purple')

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Add to plant list
Variety or Cultivar
'Round and Purple' is a bulbous perennial with glossy, strap-shaped, deep green basal leaves and, from late spring into summer, sturdy, erect stems bearing large, dense, rounded umbels of star-shaped, lilac-purple flowers.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
1 m 0.3 m 2-5 years
3 ft 0 ft 2-5 years

Where to grow

Soil type
  • Chalky
  • Clay
  • Loamy
  • Sandy
Soil drainage
  • Moist but well-drained
  • Well-drained
Soil pH
  • Acid
  • Alkaline
  • Neutral
Sunlight
  • Full Sun
Aspect
  • East
  • West
  • South
  • North
Exposure
  • Sheltered

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Additional plant details

Cultivation

Grow in fertile, well-drained soil in full sun. Plant bulbs 5-10cm deep in autumn.

Suggested uses

Gravel, Architectural, Flower Arranging, Beds and borders, Cottage/Informal

UK hardiness

H5

USDA zones

Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9

Sunset zone

2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Erect flower stem

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Fragrance

Foliage has a nice fragrence

Toxicity

Not toxic

Plant care

Pruning

No pruning required. If desired, remove leaves only after they have completely died down.

Propagation methods

Seed, Division

Pests

Pest free, may suffer from slugs on new growth.

Diseases

Onion rot

Downy mildew

Divide and replant after flowering

Add grit to clay soils to improve the drainage

Separate bulb offsets

Plant Allium, Erythronium, Colchicum and Galtonia bulbs

Remove faded or dead foliage (optional)

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Companion plants (0)

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