Best alliums to grow - Allium ‘Millennium’

Allium ‘Millennium’

Allium

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Allium 'Millennium'
  • Common name: Allium
  • Family: Amaryllidaceae
  • Plant Type: Bulb
Flower colour:

Pink

Purple

Foliage colour:

Green

Allium ‘Millennium’ is a fantastic mid- late-summer-flowering allium, bearing large, rounded heads of pink-purple flowers in June and July. Like all alliums, its blooms are extremely attractive to a wide range of pollinating insects, such as bees, butterflies and hoverflies. It’s perfect for growing in a mixed herbaceous border and is best planted in large groups, where its glossy green foliage and large purple flowers will work perfectly with other flowering plants in the border.

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Grow Allium ‘Millennium’ in moist but well-drained soil in full sun. Feed with a high potash solution after flowering and allow the leaves to die down naturally. Like all alliums, the spent flowers take on an architectural beauty into autumn and winter, so leave these in situ if you can.

How to grow Allium 'Millennium'

  • Plant size

    40cm height

    45cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Front, middle

  • Sun exposure: Full sun
  • Hardiness: Hardy
  • Soil type: Acidic / chalky / alkaline / clay / heavy / moist / well drained / light / sandy

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do not Plant in May

Do not Plant in June

Do not Plant in July

Do not Plant in August

Do Plant in September

Do Plant in October

Do Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Divide
Divide

Do not Divide in January

Do not Divide in February

Do Divide in March

Do Divide in April

Do not Divide in May

Do not Divide in June

Do not Divide in July

Do not Divide in August

Do not Divide in September

Do Divide in October

Do Divide in November

Do not Divide in December

Collect seeds
Collect seeds

Do not Collect seeds in January

Do not Collect seeds in February

Do not Collect seeds in March

Do not Collect seeds in April

Do not Collect seeds in May

Do not Collect seeds in June

Do not Collect seeds in July

Do not Collect seeds in August

Do Collect seeds in September

Do Collect seeds in October

Do not Collect seeds in November

Do not Collect seeds in December

Allium 'Millennium' and wildlife

Allium 'Millennium' is known for attracting bees, beneficial insects, butterflies​/​moths and other pollinators. It has nectar/pollen rich flowers.

Attractive to Bees

Attractive to Beneficial insects

Does not attract Birds

Attractive to Butterflies​/​Moths

Attractive to Other pollinators

Is Allium 'Millennium' poisonous?

Allium 'Millennium' can be toxic.

Toxic to:

Toxic to Cats

Toxic to Dogs

Toxic to Horses

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Livestock

No reported toxicity to People