How to Grow White Lisbon Onion
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White Lisbon Onion
Allium cepa 'White Lisbon'
vegetableWhite Lisbon is a popular bunching onion variety prized for its tender, mild white bulbs and long, slender green tops. It matures quickly and is ideal for fresh eating, salads, and as a scallion substitute. This heirloom variety has been cultivated for over a century and remains a favorite among home gardeners for its reliability and flavor.
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Example White Lisbon Onion timeline · Pittsburgh, PA (Zone 6b)
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Plant White Lisbon Onion
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest White Lisbon Onion
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact White Lisbon Onion dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9; prefers cooler seasons for best quality
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Seedling (Seed)
10-14 daysTiny green shoots emerge from soil; very delicate with hair-thin leaves
Keep soil consistently moist. Thin seedlings to proper spacing once they reach 2 inches tall. Protect from heavy rain and wind
Seedling (Transplant)
3-5 days before planting into gardenSturdy pencil-thin green shoots 4-6 inches tall with white base just beginning to form
Harden off for 7-10 days before planting. Plant shallow with minimal root disturbance. Water gently after transplanting
Vegetative Growth
4-6 weeksRapid elongation of green tops (15-24 inches); white bulb swells at base, roots establish deep in soil
Maintain consistent moisture and fertility. Apply balanced fertilizer every 3 weeks. Remove any flower stalks immediately. Monitor for pests
Maturity
2-3 weeksWhite bulbs swell noticeably; green tops remain tender and upright; plants reach full height
Continue watering and fertilizing. Reduce nitrogen slightly to encourage bulb expansion. Harvest begins when bulbs reach desired size
Harvest Ready
Ready for harvest; use within 1-2 weeks for best qualityFirm white bulbs 0.5-1 inch diameter with tender, mild-flavored green tops; bulbs may be slightly soft still
Begin selective harvesting from outside of bunches. Water heavily 1-2 days before harvesting for crisp tops. Can harvest continuously or all at once
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Use row covers over seedlings; apply diatomaceous earth; rotate crop locations; remove infested plants immediately
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Spray with insecticidal soap; increase humidity; use reflective mulch; beneficial insects like predatory mites help control
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Ensure excellent drainage; avoid overhead watering; remove diseased plants; sterilize tools; plant resistant varieties when available
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Improve air circulation; use drip irrigation instead of overhead watering; apply sulfur or copper fungicide; remove affected leaves
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Use collars around seedlings; apply nematodes to soil; handpick at night; remove debris where they hide
Uses
Fresh Scallions & Salads
CulinaryWhite Lisbon's tender bulbs and mild flavor make it ideal for fresh eating, slicing into salads, and using as a scallion/green onion substitute. The entire plant—both white bulb and green tops—is edible and adds a crisp, mild onion flavor without harsh bite. [source]
Cooking & Garnish
CulinaryUse chopped white bulbs in soups, stews, and stir-fries; use sliced green tops as a nutritious garnish for finished dishes. The white portion adds subtle onion flavor while the greens provide visual appeal and fresh taste. [source]
Quercetin & Anti-inflammatory
MedicinalWhite onions contain quercetin, a flavonoid with antioxidant and anti-inflammatory properties. Regular consumption may support heart health and reduce inflammation. [source]
Natural Dye & Cleaning
HouseholdOnion skins and bulbs can be used to create natural dyes for textiles. The sulfur compounds in onions make them useful in homemade cleaning preparations. [source]
Pollinator & Beneficial Insect Support
WildlifeIf allowed to bolt and flower, White Lisbon produces delicate white flowers that attract bees and other pollinators, supporting garden biodiversity. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when white bulbs reach 0.5-1 inch diameter for tender scallion-style use, or allow to grow larger for cooking onions. Pull entire plant or cut outer stems selectively for continuous harvest. Best flavor is harvested in cool morning hours. White Lisbon can be harvested fresh within 50-60 days from transplant. For storage, allow plants to fully mature and dry, then store in cool (50-60°F), low-humidity conditions for 2-3 months.
Fun Facts
- 🌱 White Lisbon has been cultivated since at least the 1880s and was originally developed in Portugal (hence 'Lisbon'). It remains virtually unchanged and is one of the most reliable bunching onion varieties available.
- 🌱 Unlike most onion varieties, White Lisbon does not form large storage bulbs even at maturity—it stays relatively slender and tender, making it a true bunching/scallion type. This is ideal for fresh use but not for long-term storage.
- 🌱 The entire plant is edible and nutritious: the white bulbs contain quercetin and sulfur compounds, while the green tops are rich in vitamins A, C, and K. Traditional cuisines have used all parts of bunching onions for thousands of years.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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