Allium Haarlem Superglobe Mixed 10/12cm

Ornamental Onions

Supplied as 10-12cm Bulbs
10-12cm Bulbs
Delivery within 28 days
Download our handy planting instructions PDF
  • Suitable for planting in sunny and partially shaded locations
  • Suitable for growing in pots and containers
  • Excellent for cut flowers
  • Summer flowering time
  • GREEN foliage colour
  • MIXED flowering Colour

Availability to buy and flowering time

Available to Buy Flowering Time

Product Description

A spectacular mixture of medium to tall Alliums with large globe shaped heads made up of tight clusters of spiky flowers varying in shades including creamy white, pink, mauve to the deepest purple-violet. A spectacular firework like coverage for the border. Their lovely curled green leaves will wither just before the flowers appear in early summer months, so we recommend complementing these stunning flowers with low-growing plants to provide filling foliage over the base areas. Flowers May-June. Heights ranging 50-70cm. 10-12cm bulbs supplied.

Plant Size

Mature Height 70 cm
Mature Spread 20 cm
Plant Spacing 15 cm
Annual Growth 70 cm

Planting Notes

Planting Three to four times their own depth
Soil Type Fertile, well drained soil.

Growing at a glance…

Plant in fertile, well-drained soil at approx 10cm apart and at a depth of roughly 3-4 times the size of the bulb. Larger bulbs should be spaced 20cm apart. Leave untouched for a number of years until the bulbs have multiplied and divide if necessary. Smaller alliums can be grown in containers, but ensure it's large enough to space the bulbs an appropriate distance apart.

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