Seed Grown Parsnips: How To Grow Parsnips From Seed

Image by cassieleedhan

By Mary H. Dyer, Master Naturalist and Master Gardener

Parsnips are nutritious root vegetables with a delicious, slightly nutty flavor that becomes even sweeter in cool weather. If you’re interested in seed-grown parsnips, give it a try! Growing parsnips from seed isn’t difficult as long as you provide the proper growing conditions. Read on to learn how to grow parsnips from seed.

When to Plant Parsnip Seeds

Plant parsnips seeds as soon as the ground is workable in spring, but not until the soil has warmed to 40 F. (4 C.). Parsnips don’t germinate well if the soil is too cold, or if air temperatures are below 75 F. (24 C.).

How to Grow Parsnips from Seed

When it comes to growing parsnips from seed, proper soil preparation is critical. Work the soil well to a depth of at least 18 inches (46 cm.), then rake out rocks, clods and clumps.

To keep the soil loose and friable, dig in a generous amount of compost or other organic material. This step is especially important if the soil in your garden is compacted, as parsnips may develop cooked, branched or distorted roots in hard soil.

Additionally, dig a balanced, general-purpose fertilizer into the top 6 inches (15 cm.) of soil at planting time, according to label recommendations.

Once you’ve prepared the soil, plant the seeds on the surface, then cover them with no more than ½ inch (1.25 cm.) of vermiculite, compost or sand to help prevent crusting. Allow 18 inches (46 cm.) between each row.

Be sure to start with fresh seed, as parsnips seeds lose viability quickly. Consider pelleted seeds, which simplify planting the tiny seeds.

Caring for Seed-Grown Parsnips

Water as needed to keep the soil uniformly moist. Parsnips are relatively slow to germinate, usually taking two to three weeks, or even longer if the soil is cold.

Thin the plants to a spacing of 3 to 4 inches (7.5-10 cm.) when the seedlings are well established – usually about five or six weeks. Avoid pulling the extra seedlings. Instead, use scissors to snip them at soil level to avoid damaging the roots of the “good” seedlings.

Pile soil around the parsnips when the shoulders appear. This step will protect the vegetables from greening from exposure to sun.

As a general rule, parsnips need about 1 to 2 inches (2.5-5 cm.) of water per week, depending on temperature and soil type. Reduce watering as harvest nears. A layer of mulch keeps the soil moist and cool as temperatures begin to rise.

Feed the plants about six weeks after sprouting, and again a month later using a light application of a nitrogen-based fertilizer (21-0-0). Water thoroughly.

More Information about Parsnips
<<PREVIOUS3 2 1 ... 123NEXT>>
Print This Article
This article was last updated on
Did you find this helpful?
Share it with your friends!

Additional Help & Information

Didn't find the answer to your question? Ask one of our friendly gardening experts.

Do you know anything about gardening? Help answer someone's gardening question.

Read more articles about Parsnips.

Search for more information

Use the search box below to find more gardening information on Gardening Know How: