🧅 Potato Onion

Allium cepa var. aggregatum

vegetables Perennial Bulb Amaryllidaceae

☀️ Sun

Full Sun

💧 Water

Moderate

🗺️ Zones

3-9

🧪 Soil pH

6.0-7.0

🪴 Soil Type

Well-draining

🚿 Drainage

Well-drained

📏 Spacing

8-12 in

📐 Height

18-24 in

Key:🤝 Grows well together❌ Keep apart☀️ Sun needs💧 Water🗺️ Hardiness zone

🤝 Companions (3)

🤝 Carrot

Classic onion-carrot pest confusion pairing

🤝 Chamomile

Traditional companion for alliums

🤝 Lettuce

Interplanted salad companions

⚠️ Keep Apart (3)

⚠️ Fennel

Allelopathic - may inhibit growth

⚠️ Mint

Aggressive mint competes for resources

⚠️ Walnut

Susceptible to juglone toxicity from walnut trees

📝 Growing Notes

Plant one, harvest 8-15. Stores longer than any other onion. Excellent flavor.

🛒 Buy Seeds & Plants

Baker Creek Heirloom Seeds Johnny's Selected Seeds Botanical Interests True Leaf Market Burpee Territorial Seed Company

Plot Buddies is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. This does not affect our plant recommendations. We only link to retailers we trust.