Also known as Scallion · Spring onion · Bunching onion
Harvest before a large bulb forms. True bunching onion (*Allium fistulosum*) is another suitable type sold under the same grocery name.
EdibleCool-season crop
Growing spaceVegetable bedClimate fitUrban core · USDA 9b–10a · Valley suburbs · USDA 9a–9b · Desert outskirts · USDA 8b–9bCrop familyAmaryllidaceae (allium)Life cycleAnnual cropPhoenix planting windowSeptember–March; fall and winter are easiest.How to plantDirect sow or set out young bunching-onion starts.Plant spacing1–2 in for slender stalksFrostTolerates light frost once established; cover during a hard freeze.Time to harvestAbout 90–100 days in the Maricopa calendar; thin stalks earlierSuccessionSow short rows every 2–3 weeks.Special categoriesEDIBLETypical harvestPull stalks repeatedly through cool weather.
Before you plant
These conditions determine whether it will thrive.
Cold hardinessCover in a hard freeze below 28°F
Frost tolerant. Leaf tips may burn in the upper 20s but plants recover.
Leaves and wood: damaged below 28°FHeat toleranceShade from late-afternoon sun
More forgiving of heat than most cool crops. You can sow through April, but they get tough and start flowering in the summer heat.
