Zone 9 · winter lows 20°F to 30°F
Allium for Zone 9
23 Allium varieties rated hardy through Zone 9, ranked by how many gardeners actually grow them. Zone 9 is nearly year-round growing — heat tolerance matters more than cold.
The Allium that thrive in Zone 9
#1 most savedDrumstick Allium, Round-headed Leek
Allium sphaerocephalon
#2 most savedSummer Beauty Ornamental Onion
Allium x moly 'Summer Beauty'
#3 most savedChives
Allium schoenoprasum
Egyptian Walking Onion
Allium cepa 'Egyptian Walking Onion'
Garlic Chives
Allium tuberosum
Ornamental Onion
Allium violetum
Cipollini Onion
Allium cepa 'Cipollini Borrettana'
Egyptian Walking Onion
Allium x proliferum
Blue Globe Onion
Allium caeruleum
Shallot
Allium ascalonicum
Elephant Garlic
Allium ampeloprasum
Allium Windy City
Allium x hybrida 'Windy City'
Onion
Allium cepa
Walla Walla Sweet Onion
Allium sativum 'Walla Walla Early'
Golden Garlic
Allium x moly
California White Garlic
Allium sativum 'California White'
Tropea Long Onion
Allium cepa 'Tropeana Lunga'
Canada Onion
Allium canadense 'White Flag'
German Garlic
Allium senescens 'Ornamental Onion'
Giant Allium Schubert's Onion
Allium schubertii
Welsh Onion, Bunching Onion
Allium fistulosum
Texas Onion
Allium texanum
Schönbrunn Onion
Allium schonbrunnense
Allium in Zone 9
Will Allium survive a Zone 9 winter?
23 of the 56 Allium varieties in the Sow catalog are rated hardy through Zone 9, where winter lows reach 20°F to 30°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 9?
In Zone 9 the last spring frost typically lands around late February and the first fall frost around early December. 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 9?
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 9 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.
