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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)

Please Note: Due to state restrictions, we are unable to ship to Idaho until Oct 1.
Please select Size and Ship Week to view correct pricing and availability.
Price
Regular price $2699
Regular price $3299 Sale price $2699
Save $6
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Orders placed before 11am ET will ship same day. Orders placed after 11am ET will ship next day. Annual orders ship Monday – Wednesday. Perennial, Shrub, and Hardgood orders ship Monday – Friday.
  • Free Shipping $175+
  • Happy Gardener Guarantee
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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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Customers praised this ornamental onion for its "beautiful" purple blooms and healthy arrival condition. Most noted "quality plants" with "great root systems" and excellent packaging. Some reported plants arrived "floppy" but recovered after planting. One shopper noted no blooms in the second year despite care.

  • 5 stars: 31 (97%)
  • 4 stars: 0 (0%)
  • 3 stars: 1 (3%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
Jane P.
USDA Planting Zone: 7
Light: Full Sun
Soil Type: Clay, Loamy
Wildlife Pressure: Deer
Quality plant

Quality plant, great root system and healthy greenery. Looking forward to the big purple flowers

K
Kyle S.
'Serendipity' Ornamental Onion (Allium hybrid)

I love the color that this will bring to my garden space.

A
Anne

These arrived in perfect condition. Good sized clumps of alliums which had been trimmed back beautifully. Cant wait to see them in bloom!

K
Kat
'Serendipity' Ornamental Onion (Allium hybrid)

I was very thrilled when my plant arrived. I purchased 2 last year. Both plants bloomed, but this year I do not see any buds. I fed the plants the PW fertilizer and watered.

Thank you for sharing Garden Friend! Happy Spring, Enjoy!!

C
Cindi W.
'Serendipity' Ornamental Onion (Allium hybrid)

They came in a great box but they are floppy. I have planted them. They don't seem to be any happier. Hopefully they will perk and bloom.
I'm very happy with my other plants.

Thank you for sharing your review of your 'Serendipity' Ornamental Onions. We're sorry to hear that they arrived floppy! If your plants do not end up doing well, please email us with a photo of their conditions and we would be happy to help!

Sincerely,
PWD Team

M
Mary C.
'Serendipity' Ornamental Onion (Allium hybrid)

They were very floppy on arrival. I planted them right away and they have perked up some. Hopefully, they will bloom on time.

Thank you for sharing your review of your 'Serendipity' Ornamental Onions. We're sorry to hear that they arrived floppy! If your plants do not end up doing well, please email us with a photo of their conditions and we would be happy to help!

Sincerely,
PWD Team

K
Kelly B.
'Serendipity' Ornamental Onion (Allium hybrid)

The shipping process was easy and efficient. One box was damaged that extended to the plant container being slit in multiple places. Both plants looked healthy with one being a beautiful mature root bound plant and the other less healthy and almost zero roots. I hope it lives.

Hi Kelly,

Thank you for sharing your review of your 'Serendipity' Ornamental Onions. If your one plant does not end up doing well, please respond to this email with a photo of its conditions and we would be happy to help!

Sincerely,
PWD Team

P
Paul C.
'Serendipity' Ornamental Onion (Allium hybrid)

They add another dimension to my garden, the pink balls on top and just the right touch beautiful

Thank you for sharing your review of your 'Serendipity' Ornamental Onion! We would love to see photos in the Spring. :)

K
Kathleen M.
'Serendipity' Ornamental Onion (Allium hybrid)

These are my favorite new addition to my garden containers! The provide just the right amount of height and look stunning.

Kathleen,

Thank you for sharing!

The Serendipity Ornamental Onion is a wonderful choice for providing height and thriller elements to your containers. Enjoy!

V
Veronica R.
'Serendipity' Ornamental Onion (Allium hybrid)

I am extremely happy with my 'Serendipity' Allium. They came very well packaged with plastic over the pot to keep soil intact. I was impressed with how big, and healthy they were. I planted them straight away and gave them a nice long drink to them settled into their new home. I can't wait until they start blooming. Thanks, Proven Winners! I will definitely be ordering again soon.

R
Rachel T.
'Serendipity' Ornamental Onion (Allium hybrid)

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!

A
Antoinette L.
'Serendipity' Ornamental Onion (Allium hybrid)

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.

N
Nancy D.
'Serendipity' Ornamental Onion (Allium hybrid)

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.

W
Wendy W.
'Serendipity' Ornamental Onion (Allium hybrid)

All were in good shape and very nice plants

A
Amy E.
'Serendipity' Ornamental Onion (Allium hybrid)

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!

E
Elizabeth H.
'Serendipity' Ornamental Onion (Allium hybrid)

I used these beauties with a coral bell plant and a white petunia plant. I have light periwinkle and sage planters for 5 such combinations that accent my flower bed. Love this ever growing plant!

E
Erika D.
'Serendipity' Ornamental Onion (Allium hybrid)

I purchased 6 of these plants for a hedge. They are beautiful and in full bloom. I am very happy with my purchase.

A
Angie W.
'Serendipity' Ornamental Onion (Allium hybrid)

Good quality plants and a great selection!

D
David B.
'Serendipity' Ornamental Onion (Allium hybrid)

We purchased 3 of the serendipity allium plants arrived in good shape, well packaged and ready to plant. Only down side was 2 of the plants had had there flower buds removed?

R
Rose M.C.
'Serendipity' Ornamental Onion (Allium hybrid)

I received my order today and all 5 plants look beautiful. The pots were still moist and all the stems looked great! One plant had just started to bloom and the others have buds ready to bloom. I can't wait to plant them in the morning and watch them take off. Thank you for great service. I will keep my orders coming.

z
zhihong W.
'Serendipity' Ornamental Onion (Allium hybrid)

It was great when it arrived and looks health

N
Nancy B.
'Serendipity' Ornamental Onion (Allium hybrid)

Very happy with the plants- packaging is wonderful and plants arrived in good shape! Thank you!

R
Robin H.
'Serendipity' Ornamental Onion (Allium hybrid)

I planted Serendipity the day after it was delivered. It was a little wilted when it arrived, but after planting, it perked right up. It had buds when it arrived and they are just now blossoming! I can't wait to see them once they bloom. Thanks Proven Winners!

S
Sarah P.
'Serendipity' Ornamental Onion (Allium hybrid)

This is my second order from PWD! It arrives fast, and flawlessly packaged! My plants were the same size they would be if I bought them anywhere else. Love this website

S
Susan M.
'Serendipity' Ornamental Onion (Allium hybrid)

I have ordered from Proven Winners before. Everything has been delivered in great shape, healthy condition. This was no exception. Once planted, it has continued to thrive. I will continue to use Proven Winners without hesitation!

B
Beverly W.
'Serendipity' Ornamental Onion (Allium hybrid)

Healthy. Carefully packaged. Timely delivery !! Would love larger selection !

L
Lisa L.
'Serendipity' Ornamental Onion (Allium hybrid)

My order was shipped fast Beautifully packaged buds all over the plants in really good shape for being shipped

P
Patricia A.H.
'Serendipity' Ornamental Onion (Allium hybrid)

I was in awe that this plant arrived in excellent condition. Temps here have been close to 100. I ordered 3 allium plants. Can’t wait to see them in my garden. Thank you for perfectly packing them to survive transit.

C
Carol K.
'Serendipity' Ornamental Onion (Allium hybrid)

Great! They arrived in good condition.💜

A
Amy E.
'Serendipity' Ornamental Onion (Allium hybrid)

My serendipity allium arrived healthy and full of blossoms. They arrived soon after ordering and were packaged so there was no damage in transit. I will order direct from Proven Winners again!

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