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Crop Guide

How to grow parsnip

Root · Moderate water needs · Frost-tolerant

Primary source · Iowa State Extension
Parsnip
Brad FerradaWritten by Brad Ferrada, who built Garzed · planting data from university extensions
Moisture range
30–50%
Days to maturity
100–130
Light
Full sun
Growing Degree Units
1500 · base 40°F
When to plant parsnip in your zone
Indoor-start, transplant and harvest dates calibrated to your climate.
See planting calendar →

Growing notes

Parsnips are a long-season crop that takes 100-120 days to mature and grow best in sandy loam soil. Always plant seeds directly into your garden and never start them in pots as their long taproots begin developing early.

Harvest signs

UMN Extension

Leave parsnips in the ground until late fall or even early spring. Cold soil temperatures influence the flavor of the roots, increasing the sugar content. The later you dig out the roots, the sweeter they will be.

Planting referenceDepth, spacing, pH, light
Depth
¼ to ½ inches deep
Spacing
2 to 4 inches apart · Rows: 18 to 24 inches apart
pH range
6–7
Light
Full sun (6+ hr direct)
Pests & diseasescutworms, root maggots, aster yellows
Common pests · 2
Cutworms: can cut young plants off at the base
Root maggots: feed on and destroy the roots
Common diseases · 1
Aster yellows: hairy, bitter roots and yellow tops

Companions & antagonists

Plant near:PeasLettuce
Tip: Direct sow only — slow to germinate, be patient.

Common questions

How much water does parsnip need?

Parsnip has middle-of-the-road water needs. Aim to keep soil moisture around 30–50%, letting the top inch dry slightly between waterings rather than staying soggy.

Can I grow parsnip in a raised bed or container?

Yes — parsnip does well in raised beds and is happy in a decent-sized container too, as long as drainage is good.

Does parsnip come back every year?

No — parsnip is an annual. It completes its life in one season, so you replant it each year.