Allium Miami (Ornamental Onion)

Allium ‘Miami’ is a striking bulbous perennial with star-shaped, deep reddish-purple flowers packed into dome-shaped umbels. Blooming in late spring and early summer, the flowers are borne on tall, upright stems well above the foliage of glossy, strap-shaped leaves. Rich in nectar, the flowers attract bees, butterflies, and other pollinating insects. If left in the garden after the flowers have faded, the seed heads will remain ornamental and add months of interest.

Allium 'Miami' is a striking bulbous perennial with star-shaped, deep reddish-purple flowers packed into dome-shaped umbels. Blooming in late spring and early summer, the flowers are borne on tall, upright stems well above the foliage of glossy, strap-shaped leaves. Rich in nectar, the flowers attract bees, butterflies, and other pollinating insects. If left in the garden after the flowers have faded, the seed heads will remain ornamental and add months of interest. They also make excellent cut flowers too. Easy to grow, carefree, deer and rabbit resistant, this Allium is a pretty addition to the garden.

  • Growing up to 36-40 in. tall (90-100 cm), this beauty naturalizes easily and will come back year after year!
  • Easily grown in fertile, dry to medium moisture, well-drained soils in full sun. Add grit when planting in clay soils to improve drainage. This Allium is drought tolerant.
  • Known for attracting bees, butterflies, ​moths, and other pollinators, but deer ignore it.
  • Stunning in beds and borders, and cottage gardens. Spectacular in large sweeping drifts. Plant in groups (at least 10 to 15 bulbs) for the best visual impact. Excellent as cut flowers for both fresh and dried arrangements!
  • Mixes beautifully with other late spring flowering bulbs and creates stunning combinations with pink or white delphiniums, peonies, or irises.
  • No serious pest or disease issues. Keep an eye out for onion white rot and downy mildew.
  • To be planted in fall.
  • Propagation: remove offsets in fall.

Requirements

Hardiness 5
– 8

Heat Zones 1
– 8

Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Bulbs
Plant Family Allium
Exposure Full Sun
Season of Interest Spring (Late)Summer (Early)
Height 3'
– 4'
(90cm
– 120cm)
Spread 1'
– 2'
(30cm
– 60cm)
Spacing 8″ (20cm)
Depth 8"
(20cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Dried Arrangements, Cut Flowers, Fragrant, Showy
Tolerance Deer, Drought, Rabbit
Attracts Bees, Butterflies
Garden Uses Beds and Borders
Garden Styles Informal and Cottage