When to plant

• Set out plants about 4 weeks before your average last spring frost.

Very cold hardy; tolerates part shade. Struggles in hot-summer zones 8+.

Frost dates depend on where you live. Enter your ZIP code to get exact dates.

Dates by zone: 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b

Growing basics

Sun

Part sun (4–6 hours)

Spacing

4–5 ft

Soil temperature

At least 45°F

Containers

At least 15 gallons

Plant family

Other

Harvest per plant

About 5 lb

Companions

Keep apart: Horseradish. Horseradish spreads aggressively. Give it its own spot.

Keep apart: Mint. Mint spreads aggressively into neighbors. Keep it in a pot.

Keep apart: Fennel (bulb). Fennel slows the growth of most garden plants. Grow it on its own.

Keep apart: Sunchoke (Jerusalem artichoke). Sunchokes spread aggressively and shade neighbors.

Grow it well

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