20 reviews

'Serendipity' Ornamental Onion (Allium)

20 reviews

'Serendipity' Ornamental Onion (Allium)

Regular price $29.99
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Full Sun
Part Sun
Height15 - 20 In
Spread10 - 15 In
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'Serendipity' Ornamental Onion (Allium) boasts globe-like, rosy-purple flowers mid to late summer that top attractive blue foliage. The upright habit works as a thriller in containers and the landscape. Alliums are charming plants for the rock or herb garden. When the foliage is bruised, it smells like onions since they are in the onion family. Butterflies and honeybees adore the flowers' sweet nectar but deer and rabbits steer clear of this perennial beauty. 

  • 15-20 inches tall and 10-15 inches wide at maturity
  • Grow in zones 4-8
  • Plant in part to full sun (4+ hours daily)

Care: Trim stems after it has finished flowering if desired. Fertilize with Proven Winners Continuous Release Plant Food in spring.

Shipping Info: 

  • Enjoy free shipping on orders over $45 
  • Size at shipping varies by the season and plant 
    • 0.65 Gallon plants are 6-12" tall at shipment  
    • Quart shrubs are 5-8" tall at shipment 

Read our guide to get started with planning a garden


  • Attracts Pollinators
  • Fragrant
  • Resists Deer


  • Height: 15 - 20 In
  • Spread: 10 - 15 In
  • Habit: Upright
  • Bloom Color: Purple
  • Foliage Color: Blue
  • Plant Type: Perennial

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Customer Reviews
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Nancy D.
United States United States

Serendipity Allium

This allium is beautiful. I love the size; its perfect for the space where I planted it. The plants were so healthy when they arrived, and they have gone into the ground and never slowed down. I look forward to enjoying them for years to come.

Wendy W.
United States United States

Ornamental onion

All were in good shape and very nice plants

Amy E.
United States United States

So happy!

I love the serendipity allium because they are late summer and keep their nice green leaves unlike most allium. They came right away and perfectly packaged so there was no damage. The plants came out of the boxes nursery-fresh!

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