Zone 6 · winter lows -10°F to 0°F

Allium for Zone 6

55 Allium varieties rated hardy through Zone 6, ranked by how many gardeners actually grow them. Zone 6 is the sweet spot — nearly everything hardy grows here.

55 hardy hereof 56 Allium totalLast frost ~late April

The Allium that thrive in Zone 6

Millennium Gold Onion Moly Onion#1 most saved

Millennium Gold Onion Moly Onion

Allium x moly 'Millenium'

Zones 5–8· 155 saves· from $13
Egyptian Walking Onion#2 most saved

Egyptian Walking Onion

Allium cepa 'Egyptian Walking Onion'

Zones 4–9· 108 saves
Ornamental Onion 'Ambassador'#3 most saved

Ornamental Onion 'Ambassador'

Allium cybum 'Ambassador'

Zones 4–8· 91 saves
Drumstick Allium

Drumstick Allium

Allium sphaerocephalon

Zones 4–10· 88 saves· from $10
Blue Eddy Allium

Blue Eddy Allium

Allium senescens 'Blue Eddy'

Zones 4–8· 88 saves
Globemaster Allium

Globemaster Allium

Allium giganteum 'Globemaster'

Zones 4–8· 87 saves· from $20
Purple Sensation Allium

Purple Sensation Allium

Allium hollandicum 'Purple Sensation'

Zones 4–8· 82 saves
Ornamental Onion

Ornamental Onion

Allium violetum

Zones 4–10· 82 saves
Summer Beauty Ornamental Onion

Summer Beauty Ornamental Onion

Allium x moly 'Summer Beauty'

Zones 4–9· 77 saves· from $14
Millennium Ornamental Onion

Millennium Ornamental Onion

Allium millenium

Zones 4–8· 76 saves
Giant Onion Mix

Giant Onion Mix

Allium x hybrida 'Mix'

Zones 4–8· 73 saves· from $10
Allium Little Sapphire

Allium Little Sapphire

Allium x hybrida 'Little Sapphire'

Zones 4–8· 72 saves· from $14
Lavender Bubbles Ornamental Onion

Lavender Bubbles Ornamental Onion

Allium hollandicum 'Lavender Bubbles'

Zones 4–8· 71 saves· from $18
Garlic Chives

Garlic Chives

Allium tuberosum

Zones 4–9· 65 saves
Chives

Chives

Allium schoenoprasum

Zones 4–9· 65 saves
'Bubble Bath' Ornamental Onion

'Bubble Bath' Ornamental Onion

Allium giantinum 'Bubble Bath'

Zones 4–8· 63 saves· from $15
German Garlic

German Garlic

Allium senescens 'Ornamental Onion'

Zones 4–10· 59 saves· from $15
Pink Planet Allium

Pink Planet Allium

Allium giganteum 'Pink Planet'

Zones 4–8· 53 saves
Blue Globe Onion

Blue Globe Onion

Allium caeruleum

Zones 4–10· 51 saves
Serendipity Ornamental Onion

Serendipity Ornamental Onion

Allium x hybrida 'Serendipity'

Zones 4–8· 50 saves· from $18
Cipollini Onion

Cipollini Onion

Allium cepa 'Cipollini Borrettana'

Zones 4–10· 49 saves
Shallot

Shallot

Allium ascalonicum

Zones 4–10· 46 saves
Walla Walla Onion

Walla Walla Onion

Allium cepa 'Walla Walla'

Zones 5–8· 43 saves
Giant Onion Giant Allium

Giant Onion Giant Allium

Allium giganteum

Zones 5–8· 42 saves

Showing the 24 most-saved of 55 Zone 6–hardy Allium varieties. See the full Allium list →

Allium in Zone 6

Will Allium survive a Zone 6 winter?

55 of the 56 Allium varieties in the Sow catalog are rated hardy through Zone 6, where winter lows reach -10°F to 0°F. Hardiness is per-variety, not per-genus — the plants listed above are the ones that hold up; others in the genus are not rated for this zone.

When should I plant Allium in Zone 6?

In Zone 6 the last spring frost typically lands around late April and the first fall frost around mid-October. Planting after the last frost — or in early fall, so roots establish before the ground cools — gives the best establishment. Each plant page lists its own planting months.

Which Allium is best for Zone 6?

Start at the top of the list above: it is ranked by how many gardeners actually save and grow each variety, which is a strong real-world reliability signal. Then narrow by your sun exposure and the mature size that fits the bed.

Keep exploring

See Allium in your Zone 6 yard

Snap a photo of your space and Sow places these varieties in it at true mature size — then keeps the care schedule for everything you plant.

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