Parsnip

Pastinaca sativa

vegetable

verifiedReviewed by the GreenScout Team

Long, cream-colored root vegetable with a sweet, nutty flavor that intensifies after frost; matures in 120–180 days. Parsnips require deep, loose soil and long growing seasons, but reward patience with exceptional cold hardiness and storage life. Seeds are slow to germinate and require fresh seed annually.

Common Problems

Select the problem your Parsnip is experiencing to get a treatment guide.

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Slow Growthchevron_right

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Crackingchevron_right

Care Guide

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Light

Full sun (6–8 hours daily); some afternoon shade tolerated in hot regions

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Water

Water 1–2 inches per week; maintain consistent moisture to prevent cracking and forking

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Soil

Very deep, loose, well-draining soil (12+ inches); remove stones and avoid compaction; pH 6.0–7.5

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Fertiliser

Light fertilization; apply balanced fertilizer at sowing; excess nitrogen promotes forking

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Temperature

Cool-season crop; optimal 50–70°F (10–21°C); extremely frost-hardy and sweetens after freezing

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Humidity

Moderate humidity; tolerates 40–70% relative humidity; dislikes waterlogged conditions

Toxicity

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Parsnips are edible and safe; handle green parts carefully as sap can cause photosensitivity reactions on skin

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

Why does Parsnip taste sweeter after frost?

Its sweet, nutty flavor genuinely intensifies after frost — cold exposure converts starches to sugars, which is why many growers leave parsnips in the ground until after the first hard freeze before harvesting.

Why is my Parsnip seed not germinating well?

Parsnip seeds are slow to germinate and require fresh seed annually — old seed loses viability quickly, so always buy new seed each season rather than relying on leftover packets.