How to grow Parsnip

At a glance

🌱 Grow your Parsnip with GardenDex

• Reminders to water it, timed to your weather and whether it's in a pot
• Frost and disease alerts for your garden, the night before
• Follow it from seed to harvest, and see what your garden grew in $
• Point your camera at any plant or bug to identify it

🗓️ When to plant

Sow seeds directly in mid-spring after soil has warmed, or in early summer for a fall harvest. Parsnips need a long growing season and cold weather to develop their sweetness.

🌰 How to plant

1. Prepare a deep seedbed by loosening soil to at least 30 cm (12 in) and removing stones and clumps.
2. Sow seeds directly where they'll grow, placing 2–3 seeds together and thinning seedlings to 10 cm (4 in) apart once they're 5 cm (2 in) tall.
3. Keep the soil consistently moist until seedlings emerge, which can take 2–3 weeks.
4. Thin seedlings carefully to avoid disturbing remaining roots.

💧 Care

• Water regularly to keep soil evenly moist; inconsistent watering can cause roots to crack or become woody.
• Mulch around plants to retain moisture, suppress weeds, and keep soil cool.
• Avoid high-nitrogen fertilizers, which encourage forking; a balanced fertilizer applied early in the season is sufficient.
• Remove any weeds by hand to prevent root damage and competition for nutrients.

🧺 Harvest

Harvest parsnips after the first frost, when cold converts starches to sugar and sweetens the flavor; they can be left in the ground through winter in cold climates and dug as needed. In milder climates, harvest in late fall or early winter.

🐛 Common problems

Parsnip canker: Plant resistant varieties, avoid overhead watering, and ensure good soil drainage to prevent this fungal disease.

Carrot fly: Use fine mesh row covers over young plants or interplant with onions and garlic to deter this pest.

Celery leaf spot: Remove affected leaves, improve air circulation, and avoid wetting foliage when watering.

🤝 Companion plants

💚 Good neighbours: Onion, Garlic, Radish, Pea

⚠️ Keep apart from: Fennel, Dill

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