When to plant

• Set out plants about 2 weeks after your average last spring frost.
• Ready to harvest about 90 days after planting.

Perennial in zone 9+. Elsewhere, pot up a stalk to overwinter indoors.

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

Harmful to pets. Can upset cats' and dogs' stomachs if they eat much of it.

Sun

Full sun (6+ hours)

Spacing

24–36 in

Soil temperature

At least 60°F

Time to harvest

About 90 days

Containers

At least 5 gallons

Plant family

Grass family

Harvest per plant

About 1 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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