22 reviews

'Serendipity' Ornamental Onion (Allium)

22 reviews

'Serendipity' Ornamental Onion (Allium)

Buy 8, Get 8% Off
Buy 16, Get 12% Off
Regular price $32.99
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All Ships Now orders placed today will ship Monday. All Preorders will ship during selected week. All houseplants ship on Mondays.
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
5.0 Based on 22 Reviews
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Rachel T.
United States United States

Beautiful root balls and well packaged

I ordered these allium in early fall when the blooms were already gone, but the foliage looks very healthy, the root ball is nicely developed, and the shipping was packaged well. Can’t wait for next year to see the blooms!

Antoinette L.
United States United States

Great service and selection

Had been searching for these locally all summer. Just discovered PWD and am very happy. Plants were in good shape and expertly packaged. End of the season for us here in Michigan, but they will get a hold for next year.

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.

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