Serendipity Ornamental Onion - Bare Root Plant

Name: Serendipity Ornamental Onion - Bare Root Plant
Brand: Great Lakes Lavender Farm
SKU: GLLF-PER-5A50BF7F-BR
Price: 15.1 USD
Availability: InStock

$15.10

$15.10 $30.08

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Size : Bare Root Plant

Bare Root Plant

Re-stocking soon

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Who

What

Where

When

Why

How

Why some shipping routes differ

Live plants are pickup only June 1–September 30. Plugs and potted plants cannot use our shipping path to AZ, CA, HI, ID, NV, OR, UT, or WA; pickup may remain available. Soil-free bare root plants may ship to those states during March 1–May 31 when all remaining rules pass. Montana plug and potted-plant arrivals must be October 1–May 31.

We choose neem oil and lower-impact plant care instead of routinely drenching our greenhouse with lab-manufactured pesticides. We are exploring a screened growing house that may expand future shipping options.

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Bare root arrives dormant

Expect new growth in about 6 weeks after planting. Until then it can look lifeless, so you won’t be able to tell within 24 hours of arrival whether it will grow.

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About the Product

Serendipity has everything gardeners like about the classic summer-blooming ornamental onions, plus striking blue foliage. Rosy purple globes appear in abundance from mid to late summer, standing out against the cool blue leaves.

It has been a repeat top performer in Michigan State University trials and a consumer favorite in Canadian trials. At 15 to 20 inches tall, it fits the front of a border, rock gardens and containers. It is drought tolerant and easy to grow, and while pollinators love it, deer and rabbits avoid it.

What it looks like

Rounded flower heads about 2 inches across packed with many tiny starry florets in rosy purple, held on firm stems just above the foliage. Leaves are thick, strappy and powder blue to blue-green with a slight gloss, forming a compact, upright clump. The plant is 15 to 20 inches tall and 10 to 15 inches wide. At peak bloom rosy purple balls crowd the top of the blue foliage clump.

Growing it with lavender

Serendipity loves the same full sun and lean, well-drained soil as lavender, and its blue leaves and rosy purple globes blend with lavender's colors while blooming after lavender's first flush.

Care

Grow in full sun to part shade in lean to average, well-drained soil; it handles drought once established. Hardy in USDA zones 4-8. Trim off any tired foliage in fall or early spring; clumps can be divided in spring every few years.

At a glance

Botanical name: Allium
Flower color: Rosy purple
Foliage: Powder blue
Growth habit: Compact, upright clump
Mature size: 15–20 in tall × 10–15 in wide
USDA hardiness zones: 4–8
Light: full sun, part sun to part shade
Bloom start: Late-July
Peak bloom: Early-August
Bloom pattern: Single Flush
Deer resistance: Resistant
Pollinator value: Excellent

Sizes and shipping

Dormant bare-root plant, sold in boxes of 25 per variety (order in multiples of 25). Bare-root plants ship or are picked up March 1–May 31 only. They are soil-free, so they may ship to every state in that window. Dormant plants often show little or no top growth on arrival; plant or heel them in promptly.

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Mature height: 20.0 in
Mature spread: 15.0 in
Bloom: Late-July – peak Early-August
Fragrance: Mild
Deer: Resistant

Lavender companion · grow guide

How to grow Serendipity

Ornamental Onion · Allium

Give these clump-forming summer alliums full sun and well-drained soil. Once settled they shrug off drought, heat, deer and rabbits and bloom in mid to late summer.

Check my zone & planting dates

Full sunLight
Low waterFast drainage
pH 6.0–7.5Soil
Zones 4a–8bHardiness
20″ tall15″ wide
ResistantDeer · rabbits resistant
Toxic to petsPets

Huckleberry saysTell me where you grow and I’ll check if Serendipity will thrive there.

or pick your zone

Hardy in zones 4a–8b

Spring or early fall, at least 6 weeks before the ground freezes.

Dormant bare-root clumping ornamental onion (allium) as it arrives, laid on burlap

When it arrives

Your bare-root plant

You'll get a cluster of small, slender bulbs joined at the base, with stringy roots and maybe cut-back leaves. Soak roots 30 minutes, then plant right away, bulbs just below the surface. Keep cool and slightly moist if you must wait a few days.

Expect new growth in about 6 weeks after planting. Bare root ships March–May while dormant, with little or no top growth, and it can look lifeless until then. That’s normal. Grassy green tufts come up in mid-spring (April in Michigan). Flower stems follow in early summer and bloom July to September depending on variety. Foliage that yellows a bit in late fall is normal.

You won’t be able to tell within 24 hours of arrival whether a dormant plant will grow.

When to plant

Spring or early fall, at least 6 weeks before the ground freezes.

How deep

Set the clump so the tops of the small bulbs sit just below the soil surface and the leaf bases are at soil level. Spread the roots downward; don't bury the foliage.

Spacing

12–18 inches apart for most; larger types up to 24 inches.

Soil

Sandy, loam or gravelly; clay if amended · pH 6.0–7.5

Fix-it tip: Wet soil rots the bulbs. In clay, work in compost and plant on a slight mound or in a raised bed so water never sits around the clump.

Sun

Full sun (tolerates light part shade).

Less than 6 hours of sun gives floppier foliage and fewer, smaller flower globes.

Don’t give up on it

Is it alive? What spring looks like

Grassy green tufts come up in mid-spring (April in Michigan). Flower stems follow in early summer and bloom July to September depending on variety. Foliage that yellows a bit in late fall is normal.