---
title: How to sow parsnip seeds directly outdoors in March
description: Learn how to successfully sow parsnip seeds outdoors in March for a sweet harvest. Follow our step-by-step guide for optimal results.
---

[How to Garden! ](https://www.theonlinegardencenter.com/how-to-garden)

# [How to sow parsnip seeds directly outdoors in March](https://www.theonlinegardencenter.com/how-to-garden/how-to-sow-parsnip-seeds-directly-outdoors-in-march)

 Written by [Mark Foley](https://www.theonlinegardencenter.com/how-to-garden/author/mark-foley) | 3/23/26 12:05 AM

## How to sow parsnip seeds outdoors in March

Parsnips are a classic root crop that benefit from early sowing. Sowing directly outdoors in March gives them a long growing season, which helps develop sweeter, well-shaped roots by autumn.

They don’t transplant well, so getting sowing right from the start is key.

## Quick answer: how to sow parsnip seeds

To sow parsnip seeds outdoors, prepare a deep, stone-free soil, sow seeds thinly in shallow drills, cover lightly, and keep the soil consistently moist. Germination can be slow, so patience is important.

## Step-by-step guide to sowing parsnip seeds

Step 1: Choose the right spot

- Select a **sunny position**
- Soil should be **deep, loose, and well-drained**
- Avoid freshly manured soil (can cause forked roots)

Step 2: Prepare the soil

- Remove stones and debris
- Loosen soil to at least **20–30cm depth**
- Rake to a fine, level surface

Step 3: Sow the seeds

- Create shallow drills around **1–2cm deep**
- Sow seeds thinly along the row
- Space rows **30–40cm apart**

Step 4: Cover and water

- Lightly cover with fine soil
- Water gently to settle seeds
- Keep soil consistently moist

Step 5: Thin seedlings

- Once seedlings appear, thin to **10–15cm apart**
- Handle carefully to avoid disturbing roots

## When to sow parsnip seeds

Parsnips are best sown:

- From **March onwards**
- Once soil is workable and beginning to warm
- Not in cold, waterlogged conditions

Seeds can take **2–3 weeks (or longer)** to germinate, especially in cooler soil.

## Best parsnip varieties

- Tender and True 
    - Reliable and widely grown
    - Good flavour and shape
- Gladiator 
    - Strong germination
    - Resistant to canker
- Albion 
    - Smooth roots
    - Good disease resistance

Choose fresh seed each year, as parsnip seeds lose viability quickly.

## Ideal growing conditions

- Light 
    - Full sun preferred
- Soil 
    - Deep, stone-free, well-drained
    - Avoid heavy or compacted soil
- Water 
    - Keep soil consistently moist during germination
    - Water more during dry periods
- Feeding 
    - Minimal feeding required
    - Avoid high nitrogen fertilisers

## Common problems

Poor germination

- Cause: old seed or cold soil
- Fix: use fresh seed and wait for better conditions

Forked roots

- Cause: stony or compacted soil
- Fix: improve soil structure before sowing

Canker

- Cause: soil issues or inconsistent growth
- Fix: grow resistant varieties and maintain steady growth

Weed competition

- Cause: slow germination
- Fix: keep rows weed-free early on

## Climate and regional notes

UK & Ireland

- March is the main sowing window
- Later sowings possible into April

Europe

- Northern regions follow similar timing
- Southern regions may sow earlier

USA

- Sow as soon as soil can be worked in spring
- Timing varies by region and frost dates

## Pro tips for better results

- Mix parsnip seed with radish seed to mark rows (radishes grow faster)
- Water rows before sowing if soil is dry
- Sow a second batch a few weeks later for succession
- Avoid transplanting — always direct sow
- Leave roots in the ground after frost to improve sweetness

## FAQs: sowing parsnips

**When should I sow parsnip seeds**  
From March onwards, once soil is workable and beginning to warm.

**Why are my parsnips not germinating**  
Often due to old seed or cold soil. Parsnip seeds lose viability quickly.

**How deep should I sow parsnip seeds**  
Around 1–2cm deep in shallow drills.

**Do parsnips need full sun**  
Yes, they grow best in full sun.

**Can I grow parsnips in containers**  
Only in very deep containers, as they need space for long roots.

**How long do parsnips take to grow**  
Typically 4–6 months from sowing to harvest.

**Why are my parsnips forked**  
Usually due to stones or compacted soil.

**Do I need to thin parsnips**  
Yes, thin seedlings to 10–15cm apart for proper root development.

**Can I transplant parsnips**  
No, they do not transplant well and should be sown directly.

**Do parsnips taste better after frost**  
Yes, frost improves sweetness by converting starches to sugars.

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