'Serendipity' Ornamental Onion (Allium hybrid)

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A size chart showing 4 different options for Perennial Plants: 4.5" Eco+ Elite (5-8" plant height, 4.5" pot width, 5" pot height); 0.65 Gallon (6-14" plant height, 6.5" pot width, 6.5" pot height); 1 Gallon (6-24" plant height, 6.5" pot width, 7.13" pot height); 2 Gallon (18-28" plant height, 8.88" pot width, 9.38" pot height).
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A size chart showing 4 different options for Perennial Plants: 4.5" Eco+ Elite (5-8" plant height, 4.5" pot width, 5" pot height); 0.65 Gallon (6-14" plant height, 6.5" pot width, 6.5" pot height); 1 Gallon (6-24" plant height, 6.5" pot width, 7.13" pot height); 2 Gallon (18-28" plant height, 8.88" pot width, 9.38" pot height).
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'Serendipity' Ornamental Onion (Allium hybrid)


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All Preorders ship during selected Ship Week. All Ships Now Annuals and Indoor Plants will ship same day on Mondays and Tuesdays by 12pm EST. All Ships Now Perennials, Shrubs, and Hardgoods will ship next day Monday-Friday by 2pm ET.
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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
  • Hardy in zones 4-8, be sure to check your USDA zone to ensure success
  • Plant in part to full sun (4+ hours daily)
  • Space plants 10-15 inches apart for best results
  • Produces rosy, purple globe-like flowers throughout summer
  • Maintains upright blue-green foliage spring to frost
  • Great for borders, containers, cut flowers, mass plantings
  • Attracts bees and butterflies, Resists deer and rabbits
  • Heat tolerant, drought tolerant, fragrant flowers, fragrant foliage, fall interest

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 $175
  • Size at shipping varies by season, plant, and trimming schedules
    • Quart perennials are 5-8 in. at the time of shipment
    • 0.65 Gallon perennials are 6-14 in. at the time of shipment
    • 1 Gallon perennials are 6-24 in. at the time of shipment
  • Perennials shipped Nov-Apr will arrive dormant; perennials shipped Apr-Oct will arrive green or in bloom

Please Note: 'Serendipity' Ornamental Onion Allium is restricted and cannot be shipped to the state(s) of ID, NV and WA.

Read our guide to get started with planning a garden

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