Skip to content

How to grow turnips

Brassica rapa subsp. rapa · brassicaceae family · annual crop

Turnip is a cool-season crop, usually direct-sown in the garden, and planting opens once soil reaches about 40°F; varieties in the library mature in 38 to 50 days.

Turnip — hero (AI-generated reference image)
AI-generated reference image. Have a photo of this plant? Suggest one below.

Turnip is a fast, cool season root crop that home gardeners grow for two harvests from one planting: the swollen root and the leafy tops, which cook down like a savory green. It suits both ends of the growing season, going in as one of the first crops of spring and again in mid to late summer for a fall crop. Because it moves from seed to a usable root in about two months, it works well as a quick filler between other crops, and a fall sowing gives a second chance at that bed once summer crops finish.

The hardest part of growing turnip well is pulling it on time. University of Minnesota Extension notes that as the root enlarges beyond a usable size, it grows more likely to turn bitter, strong flavored, woody, or fibrous, especially if it matures during hot weather. A second year gardener used to letting root crops size up for a bigger harvest often leaves turnips past the two to three inch mark, expecting more food for the wait. Instead the interior turns pithy and the flavor sharpens, and the root ends up fit only for the compost pile.

Sources

Growing basics

Turnip is a cool-season crop, usually direct-sown in the garden.

Seeds germinate once soil reaches about 40°F.

Plants bolt or decline once sustained daytime highs reach 75°F.

Varieties in the library run 38 to 50 days to maturity.

Grows best in full sun.

Frost-hardy: keeps going through freezes.

Space plants about 4 inches apart.

Sources

Common questions

When do you plant turnips?

Turnip is a cool-season crop, usually direct-sown in the garden. Planting opens once soil reaches about 40°F.

What soil temperature does turnips need?

Seeds germinate once soil reaches about 40°F.

How far apart do you space turnips?

Space plants about 4 inches apart.

How long does turnips take to mature?

Varieties in the library run 38 to 50 days from planting to harvest.

3 turnips in the library

Purple Top White Globe · Hakurei · Tokyo Cross

Each has a full cited page in the library.

Pests and diseases we cover

Identification and treatment for each, with photos, in the library.

Row & Bed covers 3 turnip varieties, each with a cited care timeline and fertilization schedule, identification and treatment for the pest that reaches them, and planting windows worked out for your ZIP.

Set up your garden

See something that does not match your garden? Write to andy@rowandbed.com.