Allium giganteum – Ballyrobert Gardens
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Allium giganteum

Allium giganteum

£4.99


About this cultivar:

Allium giganteum is a plant that lives up to its name. They are huge! With heights of 4-5 feet, this Allium is a show stopper. It’s made up of perfect little purple florets that create a large round ball on top of a sturdy stem, similar to a topiary. Probably the tallest Allium around!

  • Position: Full sun, partial shade (prefers full sun)
  • Soil: Almost any soil 
  • Flowers: June, July, August
  • Other features: Bees and Butterflies, Suitable for Container
  • Hardiness: H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10°C)
  • Habit: Columnar or Upright
  • Foliage: Deciduous
  • Height: 100 - 150 cm (3.5 - 5 ft)
  • Spread: 15 - 45 cm (0.5 - 1.5 ft)
  • Time to full growth: 2 to 5 years
  • Plant type: Herbaceous Perennial, Bulb
  • Colour: Pink, green
  • Goes well with: Osteospermum, Iris, Lavender, Artemisia, Sage, Phlomis and perhaps Rosa.

About this genus:

Allium, also known as flowering onion, are disease resistant and very easy to grow in a wide range of conditions; from coastal areas to drought-prone areas to our own clay soil at Ballyrobert. They are bulbous, often edible, herbaceous perennials with a strong onion or garlic scent that is useful for warding off vampires.

Allium usually have pom-pom flowering heads that can be pink, yellow, lemon, powder-blue, purple, lilac, or white. They appear to flower for ever and insects love them. When Allium do stop flowering they don't droop-down - they dry-out! These dry flowers and stems add wonderful structure and offer an even longer 'flowering period'.

Great on their own they are also versatile plants. One use is weaving through other plants since they take up very little space on the ground and have an upright habit. We also grow a few of ours on a wall - it works! (we think). It is up to you what you do with yours! They are also great to grow in pots.

Some ideas: Try Allium next to pastels- we put the smaller ones next to Osteospermum. Or try them with Mediterranean plants like Lavender, Artemisia, Sage, Phlomis and perhaps Rosa. We also think their succulent appearance means they compliment Iris.